US1206156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of purifying and improving hydrocarbon gases.
Assignee: Standard Oil Co
•
Filing: 1916-01-24
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Granted: 1916-11-28
•
Expires: 1936-01-24
Abstract
No abstract record available.
Inventors
- 👤 Paul A Starke
- 👤 Eric A Starke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:40
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C11/00; C07C11/22; C07C11/24; C01; C01B; C01B2203/00; C01B2203/04; C01B2203/0465; C01B2203/047
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) | 1919-11-28 | 1920-05-29 | 1920-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-11-28 | 1924-05-29 | 1924-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-11-28 | 1928-05-29 | 1928-11-28 | $7700.00 | Window Closed / Lapsed |