US3401147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resins from bisphenols of 3, 9-divinyl spirobi
Assignee: Union Carbide Corp
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Filing: 1966-10-17
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Granted: 1968-09-10
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel G Smith
- 👤 Ralph F Sellers
- 👤 Allison S Burhans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:51
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/10; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G59/18; C08G59/20; C08G59/22; C08G59/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
THE EPOXY RESIN HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
7 words
THE EPOXY RESIN HAVING THE GENERAL FORMULA
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |