Patent US3205240A successfully refreshed from Google Patents.
US3205240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy esters of boron acids
Assignee: Callery Chemical Co
•
Filing: 1961-04-14
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Granted: 1965-09-07
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 James W Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:27
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C07; C07F; C07F5/00; C07F5/02; C07F5/025; C08K; C08K5/00; C08K5/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
AN EPOXY ESTER OF BORIC ACID OF THE FORMULA B(OR)3 WHERE R IS EPOXYALKYL.
Claim 2
Dependent Claim
14 words
AN EPOXY ESTER OF BORIC ACID OF THE FORMULA B(OR)3 WHERE R IS EPOXYALKYL.
References Cited (Backward Citations)
US1668797A
Cited
US2524432A
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US2650908A
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US2523433A
Cited
US2856369A
Cited
US2987537A
Cited
US3030392A
Cited
US3030406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |