Patent US409149A successfully refreshed from Google Patents.
US3264261A
Expired / Lapsed
US
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Hardenable epoxy resin compositions
Assignee: BASF Schweiz AG
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Filing: 1961-11-29
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Granted: 1966-08-02
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Stark Bernard Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:49
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A HEAT-HARDENABLE 1,2-EPOXY COMPOUND HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1 COMPOSITION COMPRISING A 1,2-EPOXY RESIN AND, AS HARDENER THEREOF, A MIXTURE OF THE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
28 words
A HEAT-HARDENABLE 1,2-EPOXY COMPOUND HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1 COMPOSITION COMPRISING A 1,2-EPOXY RESIN AND, AS HARDENER THEREOF, A MIXTURE OF THE COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2689834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |