US2355219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of aryl carboxylic acids
Assignee: Universal Oil Products Co
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Filing: 1943-05-31
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Granted: 1944-08-08
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Expires: 1963-05-31
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72; C; C07; C07C; C07C1/00; C07C1/20; C07C1/22; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/06; C07C2523/70; C07C2523/72; C07C2523/76; C07C2523/80; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1947-08-08 | 1948-02-07 | 1948-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-08 | 1952-02-07 | 1952-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-08 | 1956-02-07 | 1956-08-08 | $7700.00 | Window Closed / Lapsed |