US3460922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing gelled hydrocarbons employing polyurethanes
Assignee: Tenneco Polymers Inc
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Filing: 1967-01-09
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Granted: 1969-08-12
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Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G18/08; C08G18/0838; C08G18/0842; C10; C10L; C10L7/00; C10L7/02
Claims Analysis
Total Claims: 0
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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) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |