US2812313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of amino-group-containing polyesters
Assignee: Bayer AG
•
Filing: 1952-10-07
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Granted: 1957-11-05
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Expires: 1972-10-07
Abstract
No abstract record available.
Inventors
- 👤 Nischk Gunther
- 👤 Muller Erwin
- 👤 Bayer Otto
- 👤 Raichle Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:37
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6858
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS FOR THE PRODUCTION OF COPOLYMERS, WHICH COMPRISES REACTING IN THE PRESENCE OF A POLYMERIZATION ACCELERATOR, A VINYL COMPOUND AND A POLYESTER OBTAINED BY THE CONDENSATION OF A POLYHYDRICALCOHOL, AT LEAST ONE POLYCARBOXYLIC ACID, AT LEAST ONE OF SAID ACIDS BEING AN ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID, AND A TERTIARY AMINE OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
55 words
THE PROCESS FOR THE PRODUCTION OF COPOLYMERS, WHICH COMPRISES REACTING IN THE PRESENCE OF A POLYMERIZATION ACCELERATOR, A VINYL COMPOUND AND A POLYESTER OBTAINED BY THE CONDENSATION OF A POLYHYDRICALCOHOL, AT LEAST ONE POLYCARBOXYLIC ACID, AT LEAST ONE OF SAID ACIDS BEING AN ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID, AND A TERTIARY AMINE OF THE FOLLOWING FORMULA
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) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |