US2723971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric phosphates of copolymers of acyclic ethylenically unsaturated epoxy-free monomers and ethylenically unsaturated epoxy monomers
Assignee: EIDP Inc
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Filing: 1953-03-27
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Granted: 1955-11-15
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Expires: 1973-03-27
Abstract
No abstract record available.
Inventors
- 👤 Martin E Cupery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209; C08G59/14; C08G59/1405; C08G59/1422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYMERIC PHOSPHATES AND THEIR WATER-SOLUBLE SALTS, SAID POLYMERIC PHOSPHATES HAVING A CALCULATED PHOSPHATE CONTENT OF AT LEAST 1.75% BY WEIGHT AS-H2PO4, AND BEING THE REACTION PRODUCT OF A POLYMERIC EPOXIDE COPOLYMER HAVING A MOLECULAR WEIGHT OF A T LEAST 1500 WITH PHOSPHORIC ACID IN AMOUNT OF AT LEAST ONE-HALF MOLE PER OXIRANE OXYGEN ATOM IN SAID COPOLYMER, SAID POLYMERIC EPOXIDE COPOLYMER HAVING AN EPOXIDE OXYGEN CONTENT WITHIN THE RANGE OF 0.3 TO 8% BY WEIGHT AND CONTAINING WITHIN THE RANGE OF 3 TO 60% BY WEIGHT OF A POLYMERIZED, ETHYLENICALLY UNSATURATED EPOXY MONOMER AND WITHIN THE RANGE OF 97 TO 40% BY WEIGHT OF A POLYMERIZED ACYLCLIC ETHYLENICALLY UNSATURATED EPOXY-FREE MONOMER.
Claim 2
Dependent Claim
120 words
A POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYMERIC PHOSPHATES AND THEIR WATER-SOLUBLE SALTS, SAID POLYMERIC PHOSPHATES HAVING A CALCULATED PHOSPHATE CONTENT OF AT LEAST 1.75% BY WEIGHT AS-H2PO4, AND BEING THE REACTION PRODUCT OF A POLYMERIC EPOXIDE COPOLYMER HAVING A MOLECULAR WEIGHT OF A T LEAST 1500 WITH PHOSPHORIC ACID IN AMOUNT OF AT LEAST ONE-HALF MOLE PER OXIRANE OXYGEN ATOM IN SAID COPOLYMER, SAID POLYMERIC EPOXIDE COPOLYMER HAVING AN EPOXIDE OXYGEN CONTENT WITHIN THE RANGE OF 0.3 TO 8% BY WEIGHT AND CONTAINING WITHIN THE RANGE OF 3 TO 60% BY WEIGHT OF A POLYMERIZED, ETHYLENICALLY UNSATURATED EPOXY MONOMER AND WITHIN THE RANGE OF 97 TO 40% BY WEIGHT OF A POLYMERIZED ACYLCLIC ETHYLENICALLY UNSATURATED EPOXY-FREE MONOMER.
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |