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 Assignee Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Assignee Name : 4CATALYZER CORPORATION
Total Assignments: 10
Assignment: 1
Reel/Frame:052133/0227   Pages: 7
Recorded: 03/17/2020
Attorney Dkt #:B1348.70060US03
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ROTHBERG, ALEX
Exec Dt:
10/22/2018
2
JIA, JIMMY
Exec Dt:
10/22/2018
3
DE JONGE, MATTHEW
Exec Dt:
10/22/2018
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11620740
US20200211174
16816076
Correspondence name and address
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 2
Reel/Frame:060797/0083   Pages: 7
Recorded: 08/12/2022
Attorney Dkt #:B1348.70060US04
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ROTHBERG, ALEX
Exec Dt:
10/22/2018
2
JIA, JIMMY
Exec Dt:
10/22/2018
3
DE JONGE, MATTHEW
Exec Dt:
10/22/2018
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11847772
US20220383482
17886616
Correspondence name and address
LOCK SEE YU-JAHNES
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210-2211
Assignment: 3
Reel/Frame:049008/0115   Pages: 4
Recorded: 04/26/2019
Attorney Dkt #:B1348.70066US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SILBERMAN, NATHAN
Exec Dt:
11/06/2018
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20190142388
16192620
Correspondence name and address
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 4
Reel/Frame:051090/0063   Pages: 12
Recorded: 11/22/2019
Attorney Dkt #:B134870060US01-70060US02
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ROTHBERG, ALEX
Exec Dt:
09/30/2019
2
JIA, JIMMY
Exec Dt:
11/04/2019
3
DE JONGE, MATTHEW
Exec Dt:
11/01/2019
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
10628932
US20190130554
16172076
 
10706520
US20190266716
16405996
Correspondence name and address
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 5
Reel/Frame:054977/0310   Pages: 4
Recorded: 01/13/2021
Attorney Dkt #:O0354.70028US03_US04_WO00
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SOFKA, MICHAL
Exec Dt:
11/21/2019
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
11467239
US20200034998
16524598
 
11300645
US20200033431
16524638
Correspondence name and address
DANIEL. G. RUDOY
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 6
Reel/Frame:059516/0879   Pages: 4
Recorded: 03/28/2022
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SOFKA, MICHAL
Exec Dt:
11/21/2019
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20220214417
17702545
Correspondence name and address
DANIEL G. RUDOY
WOLF, GREENFIELD AND SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 7
Reel/Frame:052244/0951   Pages: 4
Recorded: 03/27/2020
Attorney Dkt #:O0354.70031US01_WO00
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SOFKA, MICHAL
Exec Dt:
11/26/2019
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11789104
US20200058106
16541511
Correspondence name and address
DANIEL G. RUDOY
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 8
Reel/Frame:064881/0624   Pages: 4
Recorded: 09/12/2023
Attorney Dkt #:133894-0825 (HPF-031US02)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SOFKA, MICHAL
Exec Dt:
11/26/2019
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230417852
18465702
Correspondence name and address
FOLEY & LARDNER LLP
3000 K STREET N.W.
SUITE 600
WASHINGTON, DC 20007-5109
Assignment: 9
Reel/Frame:053597/0713   Pages: 4
Recorded: 08/26/2020
Attorney Dkt #:B1348.70118US00-DEJ-4CAT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
DE JONGE, MATTHEW
Exec Dt:
07/08/2020
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
D899077
NONE
29668113
Correspondence name and address
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210
Assignment: 10
Reel/Frame:054305/0817   Pages: 4
Recorded: 11/06/2020
Attorney Dkt #:B1348.70115US00
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
DE JONGE, MATTHEW
Exec Dt:
10/13/2020
Assignee
1
4CATALYZER CORPORATION
530 OLD WHITFIELD STREET
GUILFORD, CONNECTICUT 06437
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
D909048
NONE
29668114
Correspondence name and address
ANDREA D. MERIN
WOLF, GREENFIELD & SACKS, P.C.
600 ATLANTIC AVENUE
BOSTON, MA 02210

Search Results as of: 05/23/2024 11:52 AM
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