Patent US2692876A successfully refreshed from Google Patents.
US2692876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphates of styrene-epoxy compound copolymers
Assignee: EIDP Inc
•
Filing: 1953-06-09
•
Granted: 1954-10-26
•
Expires: 1973-06-09
Abstract
No abstract record available.
Inventors
- 👤 Martin E Cupery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:58
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209; C08G59/14; C08G59/1405; C08G59/1422; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYMERIC PHOSPHATES AND THEIR SALTS, SAID POLYMERIC PHOSPHATES BEING THE REACTION PRODUCT OF A POLYMERIC EPOXIDE COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 1500 WITH PHOSPHORIC ACID IN AMOUNT OF AT LEAST ONEHALF MOLE PER OXIRANE OXYGEN ATOM IN SAID COPOLYMER, SAID POLYMERIC EPOXIDE COPOLYMER CONTAINING FROM 2 TO 65% BY WEIGHT OF A POLYMERIZED ETHYLENICALLY UNSATURATED EPOXY MONOMER AND FROM 98 TO 35% WEIGHT OF A POLYMERIZED STYRENE MONOMER.
Claim 2
Dependent Claim
80 words
A POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYMERIC PHOSPHATES AND THEIR SALTS, SAID POLYMERIC PHOSPHATES BEING THE REACTION PRODUCT OF A POLYMERIC EPOXIDE COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 1500 WITH PHOSPHORIC ACID IN AMOUNT OF AT LEAST ONEHALF MOLE PER OXIRANE OXYGEN ATOM IN SAID COPOLYMER, SAID POLYMERIC EPOXIDE COPOLYMER CONTAINING FROM 2 TO 65% BY WEIGHT OF A POLYMERIZED ETHYLENICALLY UNSATURATED EPOXY MONOMER AND FROM 98 TO 35% WEIGHT OF A POLYMERIZED STYRENE MONOMER.
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) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |