US2316754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gum and carbon deposit solvent and method of using the same
Assignee: Pure Oil Co
•
Filing: 1941-06-09
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Granted: 1943-04-20
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Expires: 1961-06-09
Abstract
No abstract record available.
Inventors
- 👤 William J Backoff
- 👤 Norman D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1608; C10L1/1616; C10L1/18; C10L1/182; C10L1/1822; C10L1/1824; C10L1/183; C10L1/1832; C10L1/185; C10L1/1857; C10L1/19; C10L1/1905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-04-19 | 1946-10-19 | 1947-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-19 | 1950-10-19 | 1951-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-19 | 1954-10-19 | 1955-04-20 | $7700.00 | Window Closed / Lapsed |