US3280077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous compositions comprising epoxy resins and polyester-ether copolymers having acidic end groups
Assignee: Individual
•
Filing: 1962-12-10
•
Granted: 1966-10-18
•
Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Leslie C Case
- 👤 Laura K Case
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:16
CPC Classifications
C; C08; C08L; C08L67/00; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; C08G63/42; C08G63/66; C08G63/668; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A CROSS-LINKED NONRESILIENT, INFUSIBLE RESINOUS COMPOSITION CONSISTING ESSENTIALLY OF FROM 16 PERCENT TO 60 PERCENT BY WEIGHT OF ORGANIC POLYEPOXIDE RESIDUES BONDED BY MEANS OF ESTER LINKAGES TO STIFF-BACKBONE POLYESTERETHER COPOLYMER RESIDUES THROUGH CHAINS THEREOF THAT CARRIED TERMINAL CARBOXYL GROUPS WHICH REACTED WITH THE EPOXIDE GROUPS TO FORM THE ESTER LINKAGES, SAID POLYESTERETHER COPOLYMERS RESIDUES BEING DERIVED FROM POLYESTERETHER COPOLYMERS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
64 words
A CROSS-LINKED NONRESILIENT, INFUSIBLE RESINOUS COMPOSITION CONSISTING ESSENTIALLY OF FROM 16 PERCENT TO 60 PERCENT BY WEIGHT OF ORGANIC POLYEPOXIDE RESIDUES BONDED BY MEANS OF ESTER LINKAGES TO STIFF-BACKBONE POLYESTERETHER COPOLYMER RESIDUES THROUGH CHAINS THEREOF THAT CARRIED TERMINAL CARBOXYL GROUPS WHICH REACTED WITH THE EPOXIDE GROUPS TO FORM THE ESTER LINKAGES, SAID POLYESTERETHER COPOLYMERS RESIDUES BEING DERIVED FROM POLYESTERETHER COPOLYMERS OF THE GENERAL FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |