US3346532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric copolymers from dihydric phenols and organic diepoxides, their preparation and cure
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1962-09-11
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Granted: 1967-10-10
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Charles E Greene
- 👤 Willem J Van Essen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:23
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ELASTOMERIC MATERIAL BEING A REACTION PRODUCT OF (A) A COMPONENT CONSISTING ESSENTIALLY OF DIHYDRIC PHENOLS HAVING AN AVERAGE MOLECULAR WEIGHT RANGING FROM 110 TO ABOUT 140 AND (B) A COMPONENT CONSISTING ESSENTIALLY OF ORGANIC DIEPOXIDES HAVING AN AVERAGE MOLECULAR WEIGHT NO GREATER THAN ABOUT 300, EACH ORGANIC DIEPOXIDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
33 words
A COMPOSITION CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF CLAIM 2 AND FROM ABOUT 10 TO ABOUT 60 PERCENT BY WEIGHT OF A REINFORCING FILLER BASED ON THE WEIGHT OF SAID REACTION PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |