US2904524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cork composition containing epoxy resin
Assignee: Armstrong World Industries Inc
•
Filing: 1957-01-02
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Granted: 1959-09-15
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Expires: 1977-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr George L Baumgartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
C; C08; C08L; C08L63/00; B; B27; B27J; B27J5/00; C08L77/00; C08L77/06; C08L77/08; C08L97/00; C08L97/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A CORK COMPOSITION COMPRISING RELATIVE PROPORTIONS OF ABOUT 100 PARTS BY WEIGHT CORK GRANULES AND ABOUT 5 TO 300 PARTS BY WEIGHT OF A BINDER THEREFOR, SAID BINDER COMPRISING THE REACTION PRODUCT OF (A) ABOUT 10% TO 70% BY WEIGHT OF AN EPOXY PRODUCT WHICH IS A POLYGYCIDYL ETHER OF A POLYNUCLEAR PHENOL AND (B) ABOUT 90% TO 30% BY WEIGHT OF A POLYMERIC POLYAMIDE RESIN WHICH IS THE REACTION PRODUCT OF POLYMERIC FAT ACIS CONTAINING AT LEAST TWO CARBOXYL GROUPS AND AN ALIPHATIC POLYAMINE, SAID POLYAMIDE RESIN CONTAINING FREE GROUPS SELECTED FROM THE GROUP CONSISTING OF AMINE GROUPS AND CARBOXYL GROUPS.
Claim 2
Dependent Claim
102 words
A CORK COMPOSITION COMPRISING RELATIVE PROPORTIONS OF ABOUT 100 PARTS BY WEIGHT CORK GRANULES AND ABOUT 5 TO 300 PARTS BY WEIGHT OF A BINDER THEREFOR, SAID BINDER COMPRISING THE REACTION PRODUCT OF (A) ABOUT 10% TO 70% BY WEIGHT OF AN EPOXY PRODUCT WHICH IS A POLYGYCIDYL ETHER OF A POLYNUCLEAR PHENOL AND (B) ABOUT 90% TO 30% BY WEIGHT OF A POLYMERIC POLYAMIDE RESIN WHICH IS THE REACTION PRODUCT OF POLYMERIC FAT ACIS CONTAINING AT LEAST TWO CARBOXYL GROUPS AND AN ALIPHATIC POLYAMINE, SAID POLYAMIDE RESIN CONTAINING FREE GROUPS SELECTED FROM THE GROUP CONSISTING OF AMINE GROUPS AND CARBOXYL GROUPS.
References Cited (Backward Citations)
US2365508A
Cited
US2705223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |