Patent US3342625A successfully refreshed from Google Patents.
US3342625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maleamic acid-vinyl copolymer release agent for pressure-sensitive adhesive tape
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1964-08-11
•
Granted: 1967-09-19
•
Expires: 1984-08-11
Abstract
No abstract record available.
Inventors
- 👤 Richard F Grossman
- 👤 Charles S Webber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:51
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/201; C09J7/22; C09J7/30; C09J7/38; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PRESSURE-SENSITIVE ADHESIVE TAPE COMPRISING: (A) A FLEXIBLE BACKING MEMBER: (B) A PRESSURE-SENSITIVE ADHESIVE COATING ON ONE SURFACE OF SAID BACKING MEMBER; AND (C) A RELEASE COATING ON THE OPPOSITE SURFACE OF SAID BACKING MEMBER, SAID RELEASE COATING CONTAINING AS THE ACTIVE RELEASE COMPONENT THEREOF A COPOLYMER OF AN N-SUBSTITUTED LONG CHAIN ALKYL MALEAMIC ACID HAVING A CHAIN LENGTH OF AT LEAST 16 C ATOMS WITH A VINYL CO-MONOMER HAVING A POLAR PENDANT GROUP, THE MOL RATIO OF ALKYL MALEAMIC ACID TO VINYL COMONOMER RANGING FROM 1:3 TO 3:2.
Claim 2
Dependent Claim
89 words
A PRESSURE-SENSITIVE ADHESIVE TAPE COMPRISING: (A) A FLEXIBLE BACKING MEMBER: (B) A PRESSURE-SENSITIVE ADHESIVE COATING ON ONE SURFACE OF SAID BACKING MEMBER; AND (C) A RELEASE COATING ON THE OPPOSITE SURFACE OF SAID BACKING MEMBER, SAID RELEASE COATING CONTAINING AS THE ACTIVE RELEASE COMPONENT THEREOF A COPOLYMER OF AN N-SUBSTITUTED LONG CHAIN ALKYL MALEAMIC ACID HAVING A CHAIN LENGTH OF AT LEAST 16 C ATOMS WITH A VINYL CO-MONOMER HAVING A POLAR PENDANT GROUP, THE MOL RATIO OF ALKYL MALEAMIC ACID TO VINYL COMONOMER RANGING FROM 1:3 TO 3:2.
References Cited (Backward Citations)
US3107227A
Cited
US3111425A
Cited
US2822290A
Cited
US2876894A
Cited
US2923646A
Cited
US3240330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |