Granted Patent
Utility
US 6,608,215
· Confirmation No. 4496
OXYGEN-CONTAINING HETEROCYCLIC FUSED NAPHTHOPYRANS
Inventor:
Xuzhi Qin
Inventors
Xuzhi Qin
Hacienda Heights, CA
Attorneys & Agents of Record
Classification
USPC
549/383
C07D493/04
G02B5/23
Prosecution
- Examiner
- SOLOLA, TAOFIQ A
- Art Unit
- 1626
- Docket No.
- 589.114US1
- Confirmation No.
- 4496
Publication
- Pub. No.
- US20030092918A1
- Pub. Date
- 2003-05-15
Patent Term Adjustment
-37days
from
VISION EASE, LP
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2022-04-29
RELEASE OF SECURITY INTEREST
Recorded 2015-10-30
SECURITY INTEREST
Recorded 2015-10-27
ASSIGNMENT OF INTELLECTUAL PROPERTY SECURITY AGREEMENT
Recorded 2015-09-15
RELEASE OF SECURITY INTEREST
Recorded 2014-09-23
RELEASE OF SECURITY INTEREST
Recorded 2014-09-23
SECURITY INTEREST
Recorded 2014-09-23
SECURITY AGREEMENT
Recorded 2012-11-08
SECURITY AGREEMENT
Recorded 2012-11-08
RELEASE OF SECURITY INTEREST
Recorded 2012-10-30
RELEASE OF SECURITY INTEREST
Recorded 2012-10-30
SECURITY AGREEMENT
Recorded 2008-03-28
RELEASE OF SECURITY INTEREST
Recorded 2007-12-20
CORRECTION ASSIGNOR AND ANSSIGNEE ON PREVIOUS RECORDATION (SEE ENCLOSED COPY) AT REEL/FRAME 015370/0722 (PATENT AND PATENT APPLICATION SECURITY AGREEMENT)
Recorded 2004-11-29
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2004-11-12
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2004-11-12
TERMINATION OF SECURITY INTEREST
Recorded 2004-11-12
GRANT OF SECURITY INTEREST IN US TRADEMARKS AND PATENTS
Recorded 2002-10-21
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Quick Facts
- Patent No.
- US 6,608,215
- App. No.
- 09/957,403
- Filed
- 2001-09-20
- Granted
- 2003-08-19
- Pub. No.
- US20030092918A1
- Examiner
- SOLOLA, TAOFIQ A
- Art Unit
- 1626
- PTA
- -37 days
External Links