US2430857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam inhibited oil
Assignee: California Research LLC
•
Filing: 1942-07-14
•
Granted: 1947-11-18
•
Expires: 1962-07-14
Abstract
No abstract record available.
Inventors
- 👤 Victor N Borsoff
- 👤 James O Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:01
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/004; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/025; C10M2207/027; C10M2207/04; C10M2207/046; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/28; C10M2207/282; C10M2207/284; C10M2207/285; C10M2207/287; C10M2207/289; C10M2207/34; C10M2215/00; C10M2215/20; C10M2215/202; C10M2215/204; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/06; C10M2223/061; C10N; C10N2010/00; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 0
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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) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |