Patent US3341475A successfully refreshed from Google Patents.
US3341475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable copolymers of oxetanes and halogen substituted epoxides
Assignee: Hercules LLC
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Filing: 1962-08-28
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Granted: 1967-09-12
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Expires: 1982-08-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:30
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G65/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AN ESSENTIALLY LINEAR, VULCANIZABLE POLYETHER COPOLYMER OF AT LEAST ABOUT 4% AND NOT MORE THAN ABOUT 90% BY WEIGHT OF FLEXIBILIZING OXETANE, AT LEAST ABOUT 10% AND NOT MORE THAN ABOUT 96% BY WEIGHT OF EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP, AND NOT MORE THAN ABOUT 75% BY WEIGHT OF EPOXIDE HAVING THE FORMULA
Claim 2
Dependent Claim
56 words
AN ESSENTIALLY LINEAR, VULCANIZABLE POLYETHER COPOLYMER OF AT LEAST ABOUT 4% AND NOT MORE THAN ABOUT 90% BY WEIGHT OF FLEXIBILIZING OXETANE, AT LEAST ABOUT 10% AND NOT MORE THAN ABOUT 96% BY WEIGHT OF EPOXIDE CONTAINING AT LEAST ONE ALIPHATIC HALOGEN GROUP, AND NOT MORE THAN ABOUT 75% BY WEIGHT OF EPOXIDE HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |