US2853468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy ether resin-polymethoxy acetal compositions
Assignee: GAF Chemicals Corp
•
Filing: 1956-10-04
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Granted: 1958-09-23
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Expires: 1976-10-04
Abstract
No abstract record available.
Inventors
- 👤 Steckler Robert
- 👤 Werner Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:19
CPC Classifications
C; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COMPOSITION OF MATTER WHICH UNDERGOES CURING IN THE PRESENCE OF AN EPOXY ETHER CURING AGENT TO A TOUGH RESINOUS MATERIAL HAVING INCREASED SHEAR AND TENSILE STRENGTH COMPRISING 50-95% BY WEIGHT OF A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING AN EPOXIDE EQUIVALENT RANGING FROM 180 TO 400 AND 50-5% BY WEIGHT OF AT LEAST ONE POLYMETHOXY ACETAL HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
63 words
A COMPOSITION OF MATTER WHICH UNDERGOES CURING IN THE PRESENCE OF AN EPOXY ETHER CURING AGENT TO A TOUGH RESINOUS MATERIAL HAVING INCREASED SHEAR AND TENSILE STRENGTH COMPRISING 50-95% BY WEIGHT OF A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING AN EPOXIDE EQUIVALENT RANGING FROM 180 TO 400 AND 50-5% BY WEIGHT OF AT LEAST ONE POLYMETHOXY ACETAL HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2487525A
Cited
US2713567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |