Patent US1948872A successfully refreshed from Google Patents.
US1948872A
Expired / Lapsed
US
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Conversion of hydrocarbons into lower boiling compounds
Assignee: Gyro Process Co
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Filing: 1929-04-08
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Granted: 1934-02-27
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Expires: 1949-04-08
Abstract
No abstract record available.
Inventors
- 👤 Malcolm H Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:46
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; C10G9/34; C10G9/36
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) | 1937-02-26 | 1937-08-28 | 1938-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-26 | 1941-08-28 | 1942-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-26 | 1945-08-28 | 1946-02-27 | $7700.00 | Window Closed / Lapsed |