US3532645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and process for the polymerization of ethylene oxide
Assignee: Texaco Inc
•
Filing: 1968-11-07
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Granted: 1970-10-06
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Expires: 1988-11-07
Abstract
No abstract record available.
Inventors
- 👤 Heinz Schulze
- 👤 Howard Paul Klein
- 👤 George Phillip Speranza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:54
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/269
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2971988A
Cited
US3037943A
Cited
US3062755A
Cited
US3167519A
Cited
US3127358A
Cited
US3141854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |