Patent US2955101A successfully refreshed from Google Patents.
US2955101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing polyepoxides with an acid anhydride and an acid amide
Assignee: Shell USA Inc
•
Filing: 1956-10-08
•
Granted: 1960-10-04
•
Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Bruin Pieter
- 👤 Johannes J Zonsveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:50
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08G59/40; C08G59/44; C08G59/46; C08G59/48; C08G59/687
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PRODUCING A RESINIFIED PRODUCT WHICH CONSISTS OF MIXING AND REACTING A POLYEPOXIDE HAVING VICINAL EPOXY GROUPS WITH 10% TO 80% BY WEIGHT, BASED ON THE POLYEPOXIDE, OF A POLYCARBOXYLIC ACID ANHYDRIDE AND 0.05% TO 15% BY WEIGHT, BASED ON THE POLYEPOXIDE, OF AN AMIDE OF THE GROUP CONSISTING OF UREA, FORMAMIDE, ACETAMIDE, PROPIONAMIDE, N-BUTYRAMIDE, PHTHALAMIDE, SALICYLAMIDE, NAPHTHAMIDES, ADIPAMIDE, BENZAMIDE, BENZENE SULFONAMIDE AND TOLUENE SULFONAMIDE.
Claim 2
Dependent Claim
67 words
A PROCESS FOR PRODUCING A RESINIFIED PRODUCT WHICH CONSISTS OF MIXING AND REACTING A POLYEPOXIDE HAVING VICINAL EPOXY GROUPS WITH 10% TO 80% BY WEIGHT, BASED ON THE POLYEPOXIDE, OF A POLYCARBOXYLIC ACID ANHYDRIDE AND 0.05% TO 15% BY WEIGHT, BASED ON THE POLYEPOXIDE, OF AN AMIDE OF THE GROUP CONSISTING OF UREA, FORMAMIDE, ACETAMIDE, PROPIONAMIDE, N-BUTYRAMIDE, PHTHALAMIDE, SALICYLAMIDE, NAPHTHAMIDES, ADIPAMIDE, BENZAMIDE, BENZENE SULFONAMIDE AND TOLUENE SULFONAMIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |