US3158581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric epoxides
Assignee: Hercules Powder Co
•
Filing: 1960-07-27
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Granted: 1964-11-24
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Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:56
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223; C08G65/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A SOLID, RUBBERY, ESSENTIALLY WHOLLY AMORPHOURS CONPOLYMER OF AN EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP AND AT LEAST ONE OTHER EXPOXIDE HAVING THE FORMULA
Claim 2
Dependent Claim
26 words
A SOLID, RUBBERY, ESSENTIALLY WHOLLY AMORPHOURS CONPOLYMER OF AN EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP AND AT LEAST ONE OTHER EXPOXIDE HAVING 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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |