Patent US2994673A successfully refreshed from Google Patents.
US2994673A
Expired / Lapsed
US
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Synthetic resin
Assignee: Pennwalt Corp
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Filing: 1959-03-06
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Granted: 1961-08-01
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Expires: 1979-03-06
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Capron
- 👤 Burton E Lederman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08G59/50; C08G59/5006; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A COMPOSITION COMPRISING AN EPOXY ETHER RESIN HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1 AND A CURING AGENT COMPRISING A MIXTURE OF (A) A RESINOUS POLYAMIDE OBTAINED BY THE CONDENSATION OF POLYMERIC FAT ACIDS WITH AN ALIPHATIC POLYAMINE, SAID RESINOUS POLYAMIDE CONTAINING FREE FUNCTIONAL GROUPS SELECTED FROM THE CLASS CONSISTING OF FREE AMINE GROUPS AND FREE CARBOXYL GROUPS (B) A TERTIARY AMINO ALCOHOL OF THE GENERAL FORMULA
Claim 2
Dependent Claim
67 words
A COMPOSITION COMPRISING AN EPOXY ETHER RESIN HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1 AND A CURING AGENT COMPRISING A MIXTURE OF (A) A RESINOUS POLYAMIDE OBTAINED BY THE CONDENSATION OF POLYMERIC FAT ACIDS WITH AN ALIPHATIC POLYAMINE, SAID RESINOUS POLYAMIDE CONTAINING FREE FUNCTIONAL GROUPS SELECTED FROM THE CLASS CONSISTING OF FREE AMINE GROUPS AND FREE CARBOXYL GROUPS (B) A TERTIARY AMINO ALCOHOL OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2695894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |