Granted Patent
Utility
US 6,624,271
· Confirmation No. 5482
PROCESS FOR MAKING A SOLUTION OF COPOLYMERS OF MALEIC ANHYDRIDE AND ALKYL VINYL ETHER IN ISOPROPYL ACETATE OF HIGH SPECIFIC VISCOSITY AND AT A HIGH SOLIDS LEVEL
Patented Case
View Patent ↗
Inventors
Attorneys & Agents of Record
Classification
USPC
526/271
C08F222/06
Prosecution
- Examiner
- PEZZUTO, HELEN LEE
- Art Unit
- 1713
- Docket No.
- FDN-2738
- Confirmation No.
- 5482
Patent Term Adjustment
0days
RELEASE OF SECURITY INTEREST
Recorded 2020-01-10
SECURITY AGREEMENT
Recorded 2017-07-03
ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC,
AQUALON COMPANY,
ISP INVESTMENTS INC.,
HERCULES INCORPORATED
RELEASE OF PATENT SECURITY AGREEMENT
Recorded 2013-03-18
PATENT RELEASE
Recorded 2011-09-19
from
AQUALON COMPANY,
ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC,
HERCULES INCORPORATED,
ISP INVESTMENT INC.
SECURITY AGREEMENT
Recorded 2011-09-16
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2002-11-26
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Quick Facts
- Patent No.
- US 6,624,271
- App. No.
- 10/304,649
- Filed
- 2002-11-26
- Granted
- 2003-09-23
- Examiner
- PEZZUTO, HELEN LEE
- Art Unit
- 1713
- PTA
- 0 days
External Links