Patent US3269853A successfully refreshed from Google Patents.
US3269853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cured polyepoxide resin compositions
Assignee: US Borax Inc
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Filing: 1960-12-16
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Granted: 1966-08-30
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Expires: 1980-12-16
Abstract
No abstract record available.
Inventors
- 👤 English William David
- 👤 Irving S Bengelsdorf
- 👤 George W Willcockson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:47
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPOSITION COMPRISING A REACTIVE POLYEPOXIDE HAVING MORE THAN ONE EPOXY GROUP PER MOLECUDE AND FROM ABOUT 2% TO ABOUT 50%, BASED ON THE WEIGHT OF SAID REACTIVE POLYEPOXIDE, OF A BORON ESTER CURING AGENT AS THE SOLE CURING AGENT. SAID BORON ESTER CURING AGENT CONSISTING OF A COMPOUND OF THE FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
58 words
A COMPOSITION COMPRISING A REACTIVE POLYEPOXIDE HAVING MORE THAN ONE EPOXY GROUP PER MOLECUDE AND FROM ABOUT 2% TO ABOUT 50%, BASED ON THE WEIGHT OF SAID REACTIVE POLYEPOXIDE, OF A BORON ESTER CURING AGENT AS THE SOLE CURING AGENT. SAID BORON ESTER CURING AGENT CONSISTING OF A COMPOUND OF THE FORMULA SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2871454A
Cited
US2941981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |