US1703528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of cracking hydrocarbons
Assignee: Sinclair Refining Co
•
Filing: 1925-01-17
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Granted: 1929-02-26
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Expires: 1945-01-17
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Herthel
- 👤 Harry L Pelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:39
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/06; C10G9/14; C10G9/16
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) | 1932-02-26 | 1932-08-27 | 1933-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-02-26 | 1936-08-27 | 1937-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-02-26 | 1940-08-27 | 1941-02-26 | $7700.00 | Window Closed / Lapsed |