US2270887A
Expired / Lapsed
US
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Catalytic conversion of hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1940-11-02
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Granted: 1942-01-27
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Expires: 1960-11-02
Abstract
No abstract record available.
Inventors
- 👤 Glen H Morey
- 👤 Frederick E Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:14
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C07; C07C; C07C5/00; C07C5/02; C07C5/32; C07C5/321; C07C5/322; C07C5/327; C07C5/333; C07C5/3332; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26
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) | 1945-01-26 | 1945-07-28 | 1946-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-26 | 1949-07-28 | 1950-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-26 | 1953-07-28 | 1954-01-27 | $7700.00 | Window Closed / Lapsed |