US3207813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel polyepoxide compositions of matter and methods and steps for producing the same
Assignee: Harvel Research Corp
•
Filing: 1962-02-09
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Granted: 1965-09-21
•
Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Mortimer T Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:40
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COMPOSITION OF MATTER COMPRISING (A) A POLYEPOXIDE HAVING A EICINAL EPOXY EQUIVALENCY GREATER THAN 1, BEING HEAT CURABLE IN THE PRESENCE OF A POLYCARBOXYLIC ACID CURING AGENT THEREFOR AND BEING A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL, (B) A POLYCARBOXYLIC ACID CURING AGENT FOR (A) AND (C) A CURING-ACCELERATOR, SAID (C) SELECTED FROM THE GROUP CONSISTING OF (A) MONOMERS OF THE FORMULA:
Claim 2
Dependent Claim
63 words
A COMPOSITION OF MATTER COMPRISING (A) A POLYEPOXIDE HAVING A EICINAL EPOXY EQUIVALENCY GREATER THAN 1, BEING HEAT CURABLE IN THE PRESENCE OF A POLYCARBOXYLIC ACID CURING AGENT THEREFOR AND BEING A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL, (B) A POLYCARBOXYLIC ACID CURING AGENT FOR (A) AND (C) A CURING-ACCELERATOR, SAID (C) SELECTED FROM THE GROUP CONSISTING OF (A) MONOMERS OF THE FORMULA:
References Cited (Backward Citations)
US2511913A
Cited
US2136928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |