US2720511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers and preparation of same
Assignee: EIDP Inc
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Filing: 1954-06-03
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Granted: 1955-10-11
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Expires: 1974-06-03
Abstract
No abstract record available.
Inventors
- 👤 Cupery Martin Eli
- 👤 Sauer John Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:07
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F16/00; C08F16/12; C08F16/14; C08F16/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A SUBSTANTIALLY LINEAR COPOLYMER OF BETA-VINYLOXYETHYLAMINE AND AN ALPHA-METHYLENE MONOCARBOXYLIC ACID ESTER OF AN ALIPHATICALLY SATURATED HYDROCARBON ALCOHOL HAVING AT MOST ONE SUBSTITUENT, THAT BEING AN ALKOXY GROUP, THE POLYMERIC COMPONENTS OF WHICH ESSENTIALLY CONSIST OF BY WEIGHT, 1% TO 30% OF SAID BETA-VINYLOXYETHYLAMINE AND 70% TO 99% OF SAID ESTER.
Claim 2
Dependent Claim
51 words
A SUBSTANTIALLY LINEAR COPOLYMER OF BETA-VINYLOXYETHYLAMINE AND AN ALPHA-METHYLENE MONOCARBOXYLIC ACID ESTER OF AN ALIPHATICALLY SATURATED HYDROCARBON ALCOHOL HAVING AT MOST ONE SUBSTITUENT, THAT BEING AN ALKOXY GROUP, THE POLYMERIC COMPONENTS OF WHICH ESSENTIALLY CONSIST OF BY WEIGHT, 1% TO 30% OF SAID BETA-VINYLOXYETHYLAMINE AND 70% TO 99% OF SAID ESTER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |