Patent US3203920A successfully refreshed from Google Patents.
US3203920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixtures containing epoxy resins, curing agents and flexibilizers
Assignee: BASF Schweiz AG
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Filing: 1962-11-19
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Granted: 1965-08-31
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Nikles Erwin
- 👤 Ernst Otto
- 👤 Batzer Hans
- 👤 Brugger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:57
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A CURABLE COMPOSITION CONSISTING ESSENTIALLY OF (1) A 1,2-EPOXY COMPOUND HAVING A 1,2-EPOXY EQUIVARENCY GREATER THAN 1; (2) A CURING AGENT FOR SAID 1,2-EPOXY COMPOUND; AND (3) AS FLEXIBILIZER A LACTONE OF THE FORMULA
Claim 2
Dependent Claim
34 words
A CURABLE COMPOSITION CONSISTING ESSENTIALLY OF (1) A 1,2-EPOXY COMPOUND HAVING A 1,2-EPOXY EQUIVARENCY GREATER THAN 1; (2) A CURING AGENT FOR SAID 1,2-EPOXY COMPOUND; AND (3) AS FLEXIBILIZER A LACTONE OF THE 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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |