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Patent Assignment Assignor Details
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Assignor Name : KUMAGAI, SEIJI
Total Assignments: 23
Assignment: 1
Reel/Frame:004495/0919   Pages: 1
Recorded: 12/17/1985
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
FUTATSUKA, RENSEI
Exec Dt:
12/10/1985
2
KUMAGAI, SEIJI
Exec Dt:
12/10/1985
3
IZUMIDA, MASUHIRO
Exec Dt:
12/10/1985
Assignee
1
TAMAGAWA KIKAI KINZOKU KABUSHIKI KAISHA, NO. 6-2, GINZA 1-CHOME, CHUO-KU, TOKYO, JAPAN, A CORP. OF JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4668471
NONE
06809895
Correspondence name and address
FRISHAUF, HOLTZ, GOODMAN & WOODWARD
261 MADISON AVE.
NEW YORK, NY 10016
Assignment: 2
Reel/Frame:005066/0386   Pages: 2
Recorded: 04/20/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
YURI, HARUYUKI
Exec Dt:
04/12/1989
2
IBANE, ISAO
Exec Dt:
04/12/1989
3
KUMAGAI, SEIJI
Exec Dt:
04/12/1989
Assignee
1
HOKKAI CAN CO., LTD.
2-2 MARUNOUCHI 2-CHOME, CHIYODA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4974716
NONE
07340703
Correspondence name and address
BIRCH, STEWART, KOLASCH, AND BIRCH
301 NORTH WASHINGTON STREET
P. O. BOX 747
FALLS CHURCH, VA 22046-0747
Assignment: 3
Reel/Frame:007071/0716   Pages: 4
Recorded: 07/08/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HONDA, JUNICHI
Exec Dt:
06/13/1994
2
KUMAGAI, SEIJI
Exec Dt:
06/13/1994
3
FUJISAWA, NORIKATSU
Exec Dt:
06/14/1994
4
HAYAKAWA, MASATOSHI
Exec Dt:
06/15/1994
5
KIKKAWA, MASAHIRO
Exec Dt:
06/16/1994
6
SUZUKI, MIHO
Exec Dt:
06/15/1994
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME
JAPAN
SHINAGAWA-KU, TOKYO 141, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5475551
NONE
08272324
Correspondence name and address
LEWIS T. STEADMAN
HILL, STEADMAN & SIMPSON P.C.
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 4
Reel/Frame:007108/0150   Pages: 4
Recorded: 08/26/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
08/09/1994
2
HONDA, JUNICHI
Exec Dt:
08/09/1994
3
ITO, YOSHITOMO
Exec Dt:
08/09/1994
4
HAYAKAWA, MASATOSHI
Exec Dt:
08/09/1994
5
MATSUNAGA, TORU
Exec Dt:
08/09/1994
6
YORIZUMI, MINEO
Exec Dt:
08/09/1994
7
IKEDA, YOSHITO
Exec Dt:
08/09/1994
Assignee
1
SONY CORPORATION
7-35 KITASHINAGAWA
6-CHOME, SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5515222
NONE
08235798
Correspondence name and address
HILL, STEADMAN & SIMPSON P.C.
LEWIS T. STEADMAN
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 5
Reel/Frame:007911/0738   Pages: 2
Recorded: 03/20/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SUZUKI, TAKESHI
Exec Dt:
03/14/1996
2
FUTATSUKA, RENSEI
Exec Dt:
03/14/1996
3
KUWAHARA, MANPEI
Exec Dt:
03/14/1996
4
KUMAGAI, SEIJI
Exec Dt:
03/14/1996
Assignee
1
MITSUBISHI SHINDOH CO., LTD.
NO. 6-2, GINZA 1-CHOME, CHUO-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5667752
NONE
08618829
Correspondence name and address
FRISHAUF, HOLTZ, GOODMAN ET AL.
HERBERT GOODMAN
767 THIRD AVENUE, 25TH FLOOR
NEW YORK, NY 10017-2023
Assignment: 6
Reel/Frame:008207/0458   Pages: 3
Recorded: 11/04/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
10/08/1996
2
HAYAKAWA, MASATOSHI
Exec Dt:
10/09/1996
3
MORITA, HIROSHI
Exec Dt:
10/14/1996
4
FUJISAWA, NORIKATSU
Exec Dt:
10/14/1996
5
HONDA, JUNICHI
Exec Dt:
10/14/1996
6
NAKANO, YUJI
Exec Dt:
10/14/1996
Assignee
1
SONY CORPORATION
7 35, KITASHINAGAWA, 6-CHOME SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5737154
NONE
08666652
Correspondence name and address
HILL, STEADMAN & SIMPSON, P.C.
LEWIS T. STEADMAN
233 S. WACKER DRIVE
85TH FLOOR SEARS TOWER
CHICAGO, IL 60606
Assignment: 7
Reel/Frame:008724/0744   Pages: 3
Recorded: 09/25/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
08/27/1997
2
YAOI, TOSHIHIRO
Exec Dt:
08/27/1997
3
IKEDA, YOSHITO
Exec Dt:
08/27/1997
Assignee
1
SONY CORPORATION
SHINAGAWA-KU
7-35, KITASHINAGAWA 6-CHOME
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6365948
NONE
08824716
Correspondence name and address
HILL, STEADMAN & SIMPSON, P.C.
LEWIS T. STEADMAN
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 8
Reel/Frame:008724/0423   Pages: 3
Recorded: 09/16/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
09/09/1997
2
HONDA, JUNICHI
Exec Dt:
09/09/1997
3
FUJISAWA, NORIKATSU
Exec Dt:
09/09/1997
4
KANNO, KYU
Exec Dt:
09/11/1997
Assignee
1
SONY CORPORATION
7-35 KITASHINAGAWA 6-CHOME
SHINAGAWA-KU, TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5936815
NONE
08931743
Correspondence name and address
HILL, STEADMAN & SIMPSON, P.C.
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 9
Reel/Frame:009424/0298   Pages: 2
Recorded: 08/31/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
KUMAGAI, SEIJI
Exec Dt:
08/06/1998
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME, SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6103406
NONE
09090671
Correspondence name and address
HILL & SIMPSON, P.C.
MELVIN A. ROBINSON
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 10
Reel/Frame:009464/0180   Pages: 3
Recorded: 09/21/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GOTO, KAZUO
Exec Dt:
09/02/1998
2
KUMAGAI, SEIJI
Exec Dt:
09/02/1998
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME, SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6219213
NONE
09105015
Correspondence name and address
HILL & SIMPSON, P.C.
JAMES D. HOBART
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 11
Reel/Frame:009983/0116   Pages: 3
Recorded: 05/24/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MORIYAMA, YUTAKA
Exec Dt:
04/13/1999
2
SAWADA, SOSAKU
Exec Dt:
04/14/1999
3
KUMAGAI, SEIJI
Exec Dt:
04/13/1999
Assignee
1
SUMITOMO ELECTRIC INDUSTRIES, LTD.
5-33, KITAHAMA 4-CHOME, CHUO-KU
OSAKA-SHI, OSAKA 541-0041, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6213650
NONE
09251930
Correspondence name and address
SMITH, GAMBRELL & RUSSELL, LLP
BEVERIDGE DEGRANDI WEILACHER & YOUNG
INTELLECTUAL PROPERTY GROUP
1850 M STREET N.W. (SUITE 800)
WASHINGTON, DC 20036
Assignment: 12
Reel/Frame:010432/0980   Pages: 3
Recorded: 11/30/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SUGAWARA, JUNICHI
Exec Dt:
11/01/1999
2
NAKASHIO, EIJI.
Exec Dt:
11/04/1999
3
KUMAGAI, SEIJI
Exec Dt:
11/08/1999
4
IKEDA, YOSHITO
Exec Dt:
11/08/1999
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6519123
NONE
09392554
Correspondence name and address
HILL & SIMPSON, P.C.
JOHN SIMPSON
233 S. WACKER DRIVE
85TH FLOOR SEARS TOWER
CHICAGO, IL 60606
Assignment: 13
Reel/Frame:010432/0972   Pages: 3
Recorded: 11/30/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
11/15/1999
2
NAKASHIO, EIJI
Exec Dt:
11/16/1999
3
SUGAWARA, JUNICHI
Exec Dt:
11/16/1999
4
IKEDA, YOSHITO
Exec Dt:
11/16/1999
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME, SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6312840
NONE
09397069
Correspondence name and address
HILL & SIMPSON, P.C.
JOHN SIMPSON
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 14
Reel/Frame:010771/0907   Pages: 3
Recorded: 04/27/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
02/28/2000
2
HONDA, JUNICHI
Exec Dt:
02/28/2000
3
IKEDA, YOSHITA
Exec Dt:
02/28/2000
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME SHINAGAWA-KU
TOKYO 141, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6452892
NONE
09486140
Correspondence name and address
HILL & SIMPSON, P.C.
DAVID R. METZGER
233 S. WACKER DRIVE
85TH FLOOR SEARS TOWER
CHICAGO, IL 60606
Assignment: 15
Reel/Frame:011446/0031   Pages: 4
Recorded: 01/10/2001
Conveyance: A MISSPELLED NAME OF THE THIRD ASSIGNOR ON REEL 010771 FRAME 0907.
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
02/28/2000
2
HONDA, JUNICHI
Exec Dt:
02/28/2000
3
IKEDA, YOSHITO
Exec Dt:
02/28/2000
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME
SHINAGAWA-KU, TOKYO 141, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6452892
NONE
09486140
Correspondence name and address
SONNENSCHEIN NATH & ROSENTHAL
DAVID R. METZGER
P.O. BOX 061080
WACKER DRIVE STATION, SEARS TOWER
CHICAGO, IL 60601-1080
Assignment: 16
Reel/Frame:010792/0432   Pages: 3
Recorded: 05/04/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
04/07/2000
2
IKEDA, YOSHITO
Exec Dt:
04/10/2000
3
MIYAZAKI, TERUNOBU
Exec Dt:
04/14/2000
4
FUKUMOTO, YOSHIYUKI
Exec Dt:
04/25/2000
Assignee
1
SONY CORPORATION
7-35, KITASHINAGAWA 6-CHOME SHINAGAWA-KU
TOKYO, JAPAN
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6535364
NONE
09482914
Correspondence name and address
HILL & SIMPSON, P.C.
JAMES D. HOBART
85TH FLOOR SEARS TOWER
233 S. WACKER DRIVE
CHICAGO, IL 60606
Assignment: 17
Reel/Frame:019097/0159   Pages: 3
Recorded: 03/20/2007
Attorney Dkt #:070103
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
KUMAGAI, SEIJI
Exec Dt:
02/01/2007
Assignee
1
EUDYNA DEVICES INC.
1000, OAZA KAMISUKIAHARA, SHOWA-CHO, NAKAKOMA-GUN
YAMANASHI, JAPAN 409-3883
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20070230090
11723450
Correspondence name and address
ARMSTRONG, KRATZ, QUINTOS, ET AL.
1725 K STREET, N.W., SUITE 1000
WASHINGTON, D.C. 20006
Assignment: 18
Reel/Frame:022006/0900   Pages: 3
Recorded: 12/19/2008
Attorney Dkt #:336279US8
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TAKAYAMA, JUN
Exec Dt:
11/28/2008
2
KUMAGAI, SEIJI
Exec Dt:
12/05/2008
Assignee
1
SONY CORPORATION
1-7-1 KONAN, MINATO-KU
TOKYO, JAPAN 108-0075
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8089716
US20090161249
12337103
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 19
Reel/Frame:044869/0816   Pages: 6
Recorded: 02/08/2018
Attorney Dkt #:18549/021001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TAKADA, AKIO
Exec Dt:
01/22/2018
2
KUMAGAI, SEIJI
Exec Dt:
01/18/2018
3
SAGAWA, HIDETO
Exec Dt:
01/22/2018
4
KIMURA, TAKAHIRO
Exec Dt:
01/22/2018
5
SHIBUYA, KAZUYUKI
Exec Dt:
01/22/2018
6
SUGAWARA, TOSHIAKI
Exec Dt:
01/23/2018
7
SAKAKIBARA, SHIGESHI
Exec Dt:
01/22/2018
8
MATSUNO, YUSUKE
Exec Dt:
01/22/2018
Assignee
1
DEXERIALS CORPORATION
GATE CITY OSAKI, EAST TOWER 8F
1-11-2 OSAKI, SHINAGAWA-KU
TOKYO, JAPAN 141-0032
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10436964
US20180224589
15888332
Correspondence name and address
JONATHAN P. OSHA
909 FANNIN ST. , SUITE 3500
HOUSTON, TX 77010
Assignment: 20
Reel/Frame:054359/0771   Pages: 6
Recorded: 11/13/2020
Attorney Dkt #:20SEI-038
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SUGIMOTO, YOSHIYUKI
Exec Dt:
11/11/2020
2
TANAKA, KEIJI
Exec Dt:
11/11/2020
3
KUMAGAI, SEIJI
Exec Dt:
11/11/2020
Assignee
1
SUMITOMO ELECTRIC INDUSTRIES, LTD.
5-33, KITAHAMA 4-CHOME, CHUO-KU, OSAKA-SHI,
OSAKA, JAPAN 541-0041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11394352
US20210159858
17097348
Correspondence name and address
IPUSA, P.L.L.C
1054 31ST STREET, N.W.
SUITE 400
WASHINGTON, DC 20007
Assignment: 21
Reel/Frame:054514/0314   Pages: 2
Recorded: 11/24/2020
Attorney Dkt #:033035 M 719
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SUGIMOTO, YOSHIYUKI
Exec Dt:
11/18/2020
2
KUMAGAI, SEIJI
Exec Dt:
11/18/2020
Assignee
1
SUMITOMO ELECTRIC INDUSTRIES, LTD.
5-33, KITAHAMA 4-CHOME
CHUO-KU, OSAKA-SHI
OSAKA, JAPAN 541-0041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11405111
US20210167863
17103092
Correspondence name and address
SMITH, GAMBRELL & RUSSELL, LLP
1055 THOMAS JEFFERSON STREET
SUITE 400
WASHINGTON, DC 20007
Assignment: 22
Reel/Frame:057213/0979   Pages: 8
Recorded: 08/18/2021
Attorney Dkt #:21SEI-018
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
08/06/2021
2
SUGIMOTO, YOSHIYUKI
Exec Dt:
08/06/2021
3
TANAKA, KEIJI
Exec Dt:
08/06/2021
Assignee
1
SUMITOMO ELECTRIC INDUSTRIES, LTD.
5-33, KITAHAMA 4-CHOME, CHUO-KU, OSAKA-SHI,
OSAKA, JAPAN 541-0041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11486760
US20220057262
17445334
Correspondence name and address
IPUSA, P.L.L.C
1054 31ST STREET, N.W.
SUITE 400
WASHINGTON, DC 20007
Assignment: 23
Reel/Frame:060365/0331   Pages: 3
Recorded: 06/30/2022
Attorney Dkt #:SOESEI-PT018
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KUMAGAI, SEIJI
Exec Dt:
06/24/2022
2
SUGIMOTO, YOSHIYUKI
Exec Dt:
06/24/2022
3
TANAKA, KEIJI
Exec Dt:
06/24/2022
Assignee
1
SUMITOMO ELECTRIC INDUSTRIES, LTD.
5-33, KITAHAMA 4-CHOME
CHUO-KU
OSAKA-SHI, OSAKA, JAPAN 541-0041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230011340
17852736
Correspondence name and address
VOLPE KOENIG
30 SOUTH 17TH STREET, 18TH FLOOR
PHILADELPHIA, PA 19103

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