US3386955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted ureas as low temperature epoxy curing agents
Assignee: Wyeth Holdings LLC
•
Filing: 1966-01-14
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Granted: 1968-06-04
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Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Nawakowski Aleksandra Chrobok
- 👤 Wang Samuel Shan-Ning
- 👤 Schiller Arthur Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:42
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C09; C09J; C09J163/00; C08L; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A COMPOSITION OF MATTER COMPRISING (A) AN ORGANIC POLYEPOXIDE MATERIAL HAVING A PLURALITY OF REACTIVE 1,2EPOXY GROUPS AND (B) AS A CURING AGENT FOR SAID POLYEPOXIDE AN EFFECTIVE AMOUNT OF THE COMPOSITION OF MATTER HAVING THE STRUCTURE:
Claim 2
Dependent Claim
37 words
A COMPOSITION OF MATTER COMPRISING (A) AN ORGANIC POLYEPOXIDE MATERIAL HAVING A PLURALITY OF REACTIVE 1,2EPOXY GROUPS AND (B) AS A CURING AGENT FOR SAID POLYEPOXIDE AN EFFECTIVE AMOUNT OF THE COMPOSITION OF MATTER HAVING THE STRUCTURE:
References Cited (Backward Citations)
US2876260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |