US2185931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for converting petroleum and like oils
Assignee: ExxonMobil Oil Corp
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Filing: 1937-09-01
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Granted: 1940-01-02
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Expires: 1957-09-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Simpson
- 👤 John W Payne
- 👤 Jr John A Crowley
- 👤 Clark S Teitsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:01
CPC Classifications
C; C10; C10G; C10G11/00; B; B01; B01J; B01J8/00; B01J8/02; B01J8/0242; B01J8/025; B01J8/0285; B01J8/06; B01J8/067; C10G11/10; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00132; B01J2208/00168; B01J2208/00212
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) | 1943-01-01 | 1943-07-03 | 1944-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-01 | 1947-07-03 | 1948-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-01 | 1951-07-03 | 1952-01-02 | $7700.00 | Window Closed / Lapsed |