Patent US3041291A successfully refreshed from Google Patents.
US3041291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of epoxides
Assignee: Union Carbide Corp
•
Filing: 1959-09-23
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Granted: 1962-06-26
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Expires: 1979-09-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick E Bailey
- 👤 Fred N Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:40
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A SOLID COPOLYMER OF 1,2-ALKYLENE OXIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
9 words
A SOLID COPOLYMER OF 1,2-ALKYLENE OXIDE HAVING THE FORMULA:
References Cited (Backward Citations)
US2476922A
Cited
US2785185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |