US2444965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst composition
Assignee: Universal Oil Products Co
•
Filing: 1943-05-26
•
Granted: 1948-07-13
•
Expires: 1963-05-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Thomas
- 👤 Jacque C Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:01
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191980A
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US2320147A
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USRE22196E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |