US2463072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of catalysts
Assignee: Universal Oil Products Co
•
Filing: 1944-09-27
•
Granted: 1949-03-01
•
Expires: 1964-09-27
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Webb
- 👤 Marvin A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1782857A
Cited
GB504614A
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US2229353A
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US2184235A
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US2331338A
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US2249337A
Cited
US2342247A
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US2322863A
Cited
US2274633A
Cited
US2382394A
Cited
US2342248A
Cited
US2395836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |