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Patent Assignment Assignor Details
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Assignor Name : TSANG, STEPHEN H.
Total Assignments: 17
Assignment: 1
Reel/Frame:051744/0460   Pages: 5
Recorded: 02/06/2020
Attorney Dkt #:43219-0003US1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YANG, RICHARD R.
Exec Dt:
08/02/2018
2
TSANG, STEPHEN H.
Exec Dt:
01/28/2020
Assignee
1
REFLECTION BIOTECHNOLOGIES LIMITED
UNIT 601, 6/F, CORE BUILDING 1, NO. 1 SCIENCE PARK EAST AVENUE
PAK SHEK KOK, N.T., HONG KONG SAR
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20200255859
16635863
Correspondence name and address
TONY ZHANG
FISH & RICHARDSON P.C.
P.O.BOX 1022
MINNEAPOLIS, MN 55440-1022
Assignment: 2
Reel/Frame:052321/0804   Pages: 6
Recorded: 04/06/2020
Attorney Dkt #:01001/006026-US2
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TSANG, STEPHEN H.
Exec Dt:
04/05/2020
2
CUI, XUAN
Exec Dt:
04/03/2020
3
XU, CHRISTINE
Exec Dt:
04/03/2020
4
PARK, KAREN SOPHIA
Exec Dt:
04/03/2020
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20220409606
16622029
Correspondence name and address
LEASON ELLIS LLP
ONE BARKER AVENUE
FIFTH FLOOR
WHITE PLAINS, NY 10601
Assignment: 3
Reel/Frame:052521/0778   Pages: 6
Recorded: 04/29/2020
Attorney Dkt #:01001/004963-US1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WU, WEN-HSUAN
Exec Dt:
04/21/2020
2
TSAI, YI-TING
Exec Dt:
04/21/2020
3
CHAN, LAWRENCE
Exec Dt:
04/20/2020
4
TSANG, STEPHEN H.
Exec Dt:
04/20/2020
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20190275168
15569920
Correspondence name and address
LEASON ELLIS LLP
ONE BARKER AVENUE, FIFTH FLOOR
WHITE PLAINS, NY 10601
Assignment: 4
Reel/Frame:068335/0623   Pages: 6
Recorded: 08/20/2024
Attorney Dkt #:COLUM-40026.303
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WU, WEN-HSUAN
Exec Dt:
04/21/2020
2
TSAI, YI-TING
Exec Dt:
04/21/2020
3
CHAN, LAWRENCE
Exec Dt:
04/20/2020
4
TSANG, STEPHEN H.
Exec Dt:
04/20/2020
Assignee
1
COLUM-40026.303
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20250235556
18794752
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY STE 310
MIDDLETON, WI 53562
Assignment: 5
Reel/Frame:068747/0043   Pages: 7
Recorded: 08/22/2024
Attorney Dkt #:COLUM-40026.303
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE THE ASSIGNEE FROM "COLUM-40026.303" TO "THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK" PREVIOUSLY RECORDED ON REEL 68335 FRAME 623. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
WU, WEN-HSUAN
Exec Dt:
04/21/2020
2
TSAI, YI-TING
Exec Dt:
04/21/2020
3
CHAN, LAWRENCE
Exec Dt:
04/20/2020
4
TSANG, STEPHEN H.
Exec Dt:
04/20/2020
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20250235556
18794752
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY STE 310
MIDDLETON, WI 53562
Assignment: 6
Reel/Frame:053432/0176   Pages: 5
Recorded: 08/07/2020
Attorney Dkt #:01001/005890-US1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TSANG, STEPHEN H.
Exec Dt:
08/06/2020
2
CUI, XUAN
Exec Dt:
08/06/2020
3
SU, PEI-YIN
Exec Dt:
08/06/2020
4
JUSTUS, SALLY
Exec Dt:
08/05/2020
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20200172927
16613616
Correspondence name and address
LEASON ELLIS LLP
ONE BARKER AVENUE
FIFTH FLOOR
WHITE PLAINS, NY 10601
Assignment: 7
Reel/Frame:054111/0891   Pages: 6
Recorded: 10/20/2020
Attorney Dkt #:01001/006743-US1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TSANG, STEPHEN H.
Exec Dt:
10/16/2020
2
WU, WEN-HSUAN
Exec Dt:
10/16/2020
3
TSAI, YI-TING
Exec Dt:
10/16/2020
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20210054372
17074021
Correspondence name and address
LEASON ELLIS LLP
ONE BARKER AVENUE
FIFTH FLOOR
WHITE PLAINS, NY 10601
Assignment: 8
Reel/Frame:066782/0582   Pages: 10
Recorded: 03/15/2024
Attorney Dkt #:COLUM-40036.302
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
YANG, TINGTING
Exec Dt:
04/15/2021
2
TSANG, STEPHEN H.
Exec Dt:
07/01/2021
3
ZHANG, YU
Exec Dt:
04/15/2021
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20240043848
18485930
Correspondence name and address
KELLY A. BARTON
CASIMIR JONES S.C.
2275 DEMING WAY, SUITE 310
MIDDLETON, WI 53562
Assignment: 9
Reel/Frame:059079/0749   Pages: 4
Recorded: 02/23/2022
Attorney Dkt #:COLUM-40032.302
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
QUINN, PETER M.J.
Exec Dt:
12/22/2021
2
TSANG, STEPHEN H.
Exec Dt:
12/22/2021
3
TSAI, YI-TING
Exec Dt:
12/22/2021
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20220186253
17555284
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY
SUITE 310
MIDDLETON, WI 53562
Assignment: 10
Reel/Frame:063718/0485   Pages: 3
Recorded: 05/22/2023
Attorney Dkt #:COLUM-40032.303
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
QUINN, PETER M.J.
Exec Dt:
12/22/2021
2
TSANG, STEPHEN H.
Exec Dt:
12/22/2021
3
TSAI, YI-TING
Exec Dt:
12/22/2021
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230392164
18178341
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY
SUITE 310
MIDDLETON, WI 53562
Assignment: 11
Reel/Frame:066369/0965   Pages: 5
Recorded: 01/25/2024
Attorney Dkt #:COLUM-40032.303
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME PREVIOUSLY RECORDED AT REEL: 063718 FRAME: 0485. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
QUINN, PETER M.J.
Exec Dt:
12/22/2021
2
TSANG, STEPHEN H.
Exec Dt:
12/22/2021
3
TSAI, YI-TING
Exec Dt:
12/22/2021
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230392164
18178341
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY
SUITE 310
MIDDLETON, WI 53562
Assignment: 12
Reel/Frame:062660/0334   Pages: 4
Recorded: 02/10/2023
Attorney Dkt #:COLUM-40029.252
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WU, WEN-HSUAN
Exec Dt:
02/10/2023
2
TSAI, YI-TING
Exec Dt:
02/09/2023
3
TSANG, STEPHEN H.
Exec Dt:
02/09/2023
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20210017509
17040818
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY
SUITE 310
MIDDLETON, WI 53562
Assignment: 13
Reel/Frame:065614/0815   Pages: 5
Recorded: 11/20/2023
Attorney Dkt #:COLUM-40031.252
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TSANG, STEPHEN H.
Exec Dt:
11/07/2023
2
CUI, XUAN
Exec Dt:
01/05/2023
3
WANG, NAN-KAI
Exec Dt:
09/15/2022
4
LIU, PEI-KANG
Exec Dt:
09/15/2022
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230070477
17760152
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY
SUITE 310
MIDDLETON, WI 53562
Assignment: 14
Reel/Frame:065722/0770   Pages: 6
Recorded: 11/29/2023
Attorney Dkt #:COLUM-40031.252
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBER 17760162 TO 17760152 AND ASSIGNEE NAME PREVIOUSLY RECORDED ON REEL 065614 FRAME 0815. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
TSANG, STEPHEN H.
Exec Dt:
11/07/2023
2
CUI, XUAN
Exec Dt:
01/05/2023
3
WANG, NAN-KAI
Exec Dt:
09/15/2022
4
LIU, PEI-KANG
Exec Dt:
09/15/2022
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230070477
17760152
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY
SUITE 310
MIDDLETON, WI 53562
Assignment: 15
Reel/Frame:067966/0873   Pages: 4
Recorded: 07/11/2024
Attorney Dkt #:COLUM-40034.502
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
QUINN, PETER M.J.
Exec Dt:
07/09/2024
2
LOPES DA COSTA, BRUNA
Exec Dt:
07/09/2024
3
TSANG, STEPHEN H.
Exec Dt:
07/09/2024
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20240344055
18618660
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY STE 310
MIDDLETON, WI 53562
Assignment: 16
Reel/Frame:069229/0442   Pages: 3
Recorded: 11/12/2024
Attorney Dkt #:COLUM-40033.302
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TSAI, YI-TING
Exec Dt:
10/17/2024
2
TSANG, STEPHEN H.
Exec Dt:
09/10/2024
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20240050590
18495538
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY STE 310
MIDDLETON, WI 53562
Assignment: 17
Reel/Frame:070659/0261   Pages: 4
Recorded: 03/28/2025
Attorney Dkt #:COLUM-40990.303
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
QUINN, PETER M.J.
Exec Dt:
03/25/2025
2
TSANG, STEPHEN H.
Exec Dt:
12/29/2024
3
TSAI, YI-TING
Exec Dt:
12/29/2024
Assignee
1
THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
412 LOW MEMORIAL LIBRARY
535 WEST 116TH STREET
NEW YORK, NEW YORK 10027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20250108133
18981112
Correspondence name and address
KELLY A. BARTON
2275 DEMING WAY STE 310
MIDDLETON, WI 53562

Search Results as of: 10/03/2025 11:55 PM
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