skip navigationU S P T O SealUnited States Patent and Trademark Office AOTW logo
Home|Site Index|Search|Guides|Contacts|eBusiness|eBiz alerts|News|Help
Assignments on the Web > Patent Query
Patent Assignment Assignor Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Assignor Name : YU, DAVID U.L.
Total Assignments: 14
Assignment: 1
Reel/Frame:006455/0706   Pages: 2
Recorded: 01/21/1993
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
CONWAY, PATRICK H.
Exec Dt:
09/25/1992
2
YU, DAVID U.L.
Exec Dt:
09/25/1992
Assignee
1
DULY RESEARCH, INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90732
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5394122
NONE
07952065
Correspondence name and address
DAVID U.L. YU
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90732
Assignment: 2
Reel/Frame:006557/0353   Pages: 2
Recorded: 05/03/1993
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
04/26/1993
2
CONWAY, PARTICK H.
Exec Dt:
04/26/1993
Assignee
1
DULY RESEARCH, INC.
1912 MACARTHUR STREET
ROANCHO PALOS VERDES, CALIFORNIA 90732
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5365190
NONE
08055314
Correspondence name and address
IRVING KESCHNER
21515 HAWTHORNE BLVD.
SUITE 940
TORRANCE, CA 90503
Assignment: 3
Reel/Frame:007514/0078   Pages: 2
Recorded: 05/30/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
05/23/1995
2
BULLOCK, DONALD L.
Exec Dt:
05/23/1995
Assignee
1
DULY RESEARCH, INC.
1912 MACARTHUR STREET
RANCHOS PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5701317
NONE
08453362
Correspondence name and address
IRVING KESCHNER
21515 HAWTHORNE BOULEVARD, SUITE 1155
TORRANCE, CA 90503
Assignment: 4
Reel/Frame:008973/0467   Pages: 2
Recorded: 02/02/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
01/23/1998
2
LEE, TERRY G.
Exec Dt:
01/21/1998
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6025681
NONE
09017138
Correspondence name and address
IRVING KESCHNER
21515 HAWTHORNE BLVD., SUITE 1125
TORRANCE, CA 90503
Assignment: 5
Reel/Frame:010663/0620   Pages: 2
Recorded: 03/29/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
YU, DAVID U.L.
Exec Dt:
03/29/2000
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6448722
NONE
09538347
Correspondence name and address
IRVING KESCHNER
21515 HAWTHORNE BLVD., SUITE 1150
TORRANCE, CA 90503
Assignment: 6
Reel/Frame:013357/0180   Pages: 2
Recorded: 09/30/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
09/30/2002
2
CLENDENIN, JAMES E.
Exec Dt:
09/24/2002
3
KIRBY, ROBERT E.
Exec Dt:
09/24/2002
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6744226
US20040061456
10261831
Correspondence name and address
IRVING KESCHNER
21515 HAWTHORNE BOULEVARD
SUITE 1150
TORRANCE, CA 90503
Assignment: 7
Reel/Frame:016881/0457   Pages: 2
Recorded: 08/09/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
YU, DAVID U.L.
Exec Dt:
08/09/2005
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275-1111
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7397600
US20070047601
11199628
Correspondence name and address
DAVID U.L. YU
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA
90275-1111
Assignment: 8
Reel/Frame:018312/0081   Pages: 2
Recorded: 09/14/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SMIRNOV, ALEXEI V.
Exec Dt:
09/14/2006
2
YU, DAVID U.L.
Exec Dt:
09/14/2006
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20080068110
11522149
Correspondence name and address
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CA 90275-1111
Assignment: 9
Reel/Frame:018316/0090   Pages: 2
Recorded: 09/14/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
09/14/2006
2
SMIRNOV, ALEXEI V.
Exec Dt:
09/14/2006
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR ST.
RANCHO PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20080068112
11522185
Correspondence name and address
DULY RESEARCH INC.
1912 MACARTHUR ST.
RANCHO PALOS VERDES, CA 90275
Assignment: 10
Reel/Frame:020273/0301   Pages: 3
Recorded: 12/07/2007
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SMIRNOV, ALEXEI V.
Exec Dt:
12/05/2007
2
YU, DAVID U.L.
Exec Dt:
10/05/2007
Assignee
1
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7649328
US20090146085
11999754
Correspondence name and address
DULY RESEARCH INC.
1912 MACARTHUR STREET
RANCHO PALOS VERDES, CA 90275
Assignment: 11
Reel/Frame:025165/0477   Pages: 2
Recorded: 10/04/2010
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
03/08/2009
2
SMIRNOV, ALEXEL V.
Exec Dt:
03/08/2009
Assignee
1
DULY RESEARCH INC.
1912 W. MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275-1111
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7835499
US20100072405
12384441
Correspondence name and address
DR. DAVID YU
1912 W. MACARTHUR ST
RANCHO PALOS VERDES, CALIFORNIA
90275-1111
Assignment: 12
Reel/Frame:024068/0648   Pages: 2
Recorded: 03/02/2010
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHEN, PING
Exec Dt:
03/01/2010
2
LUNDQUIST, MARTIN L.
Exec Dt:
03/01/2010
3
YU, DAVID U.L.
Exec Dt:
03/01/2010
Assignee
1
DULY RESEARCH INC.
1912 W. MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275-1111
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20110215791
12660731
Correspondence name and address
DULY RESEARCH INC.
1912 W. MACARTHUR STREET
RANCHO PALOS VERDES, CA 90275-1111
Assignment: 13
Reel/Frame:024105/0213   Pages: 2
Recorded: 03/04/2010
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHEN, PING
Exec Dt:
03/02/2010
2
LUNDQUIST, MARTIN L.
Exec Dt:
03/02/2010
3
YU, DAVID U.L.
Exec Dt:
03/02/2010
Assignee
1
DULY RESEARCH INC.
1912 W. MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275-1111
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8350472
US20110215717
12660890
Correspondence name and address
DULY RESEARCH INC.
1912 W. MACARTHUR STREET
RANCHO PALOS VERDES, CA 90275-1111
Assignment: 14
Reel/Frame:025966/0106   Pages: 2
Recorded: 03/08/2011
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YU, DAVID U.L.
Exec Dt:
03/07/2011
2
LUO, YAN
Exec Dt:
03/07/2011
Assignee
1
DULY RESEARCH INC.
1912 W.MACARTHUR STREET
RANCHO PALOS VERDES, CALIFORNIA 90275-1111
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8487556
US20120229053
12932891
Correspondence name and address
DULY RESEARCH INC.
1912 W. MACARTHUR STREET
RANCHO PALOS VERDES, CA 90275-1111

Search Results as of: 05/12/2024 01:32 PM
If you have any comments or questions concerning the data displayed, contact PRD / Assignments at 571-272-3350. v.2.6
Web interface last modified: August 25, 2017 v.2.6
| .HOME | INDEX| SEARCH | eBUSINESS | CONTACT US | PRIVACY STATEMENT