US3535268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for manufacture of sols
Assignee: Universal Oil Products Co
•
Filing: 1968-06-10
•
Granted: 1970-10-20
•
Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 John C Haves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:47
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0047; C; C01; C01F; C01F7/00; C01F7/02; C01F7/42; C01F7/428; C01P; C01P2004/00; C01P2004/30; C01P2004/32; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2690432A
Cited
US3020242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |