US3083186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing spirobi(meta-dioxane) epoxides with polycarboxylic acid anhydrides in combination modifiers containing active hydrogen atoms
Assignee: Union Carbide Corp
•
Filing: 1958-12-02
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Granted: 1963-03-26
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Expires: 1978-12-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles W Mcgary
- 👤 Jr Charles T Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4284; C08G59/20; C08G59/22; C08G59/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A CURABLE COMPOSITION COMPRISING (A) AN EPOXIDE DERIVATIVE CORRESPONDING TO THE GENERAL FORMULA;
Claim 2
Dependent Claim
13 words
A CURABLE COMPOSITION COMPRISING (A) AN EPOXIDE DERIVATIVE CORRESPONDING TO THE GENERAL FORMULA;
References Cited (Backward Citations)
US2801232A
Cited
US2884408A
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US2947717A
Cited
US2895962A
Cited
US2921925A
Cited
US2890196A
Cited
US2918444A
Cited
US3023222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |