US2443285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic reforming of hydrocarbons
Assignee: Universal Oil Products Co
•
Filing: 1943-01-18
•
Granted: 1948-06-15
•
Expires: 1963-01-18
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Webb
- 👤 Marvin A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:29
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/322; B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; C10; C10G; C10G35/00; C10G35/04; C10G35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2320147A
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US2325033A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |