US3247283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable compositions comprising dicyclopentadiene dioxide, diglycidyl ether of a polyhydric phenol, polycarboxylic acid anhydride and organic polyol and resins made therefrom
Assignee: Union Carbide Corp
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Filing: 1961-05-03
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Granted: 1966-04-19
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Expires: 1981-05-03
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 22:37
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/40; C08G59/42; C08G59/4284
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
A CURABLE COMPOSITION COMPRISING DICYCLOPENTADIENE DIOXIDE, A DIGLYCIDYL ETHER OF BISPHENOL A HAVING AN EPOXIDE EQUIVALENT WEIGHT OF FROM ABOUT 160 TO ABOUT 1500, A METHYLATED CYCLOPENTADIENE ADDUCT OF MALEIC ANHYDRIDE, AND BISPHENOL A, IN SUCH RELATIVE AMOUNTS AS TO PROVIDE FROM ABOUT 0.33 TO 4.0 CARBOXY EQUIVALENTS OF SAID AMHYDRIDE AND FROM ABOUT 0.08 TO 2.0 HYDROXYL EQUIVALENTS OF SAID BISPHENOL A FOR EACH EPOXY EQUIVALENT OF SAID DICYCLOPENTADIENE DIOXIDE AND SAID DIGLYCIDYL ETHER, AND WHEREIN THE TOTAL WEIGHT OF SAID DICYCLOPENTADIENE DIOXIDE AND SAID DIGLYCIDYL ETHER IS COMPRISED OF FROM ABOUT 5 TO ABOUT 95 WEIGHT PERCENT OF SAID DICYLOPENTADIENE DIOXIDE AND FROM ABOUT 95 TO ABOUT 5 WEIGHT PERCENT OF SAID DIGLYCIDYL ETHER.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |