US2113536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated hydrocarbon gases
Assignee: Dow Chemical Co
•
Filing: 1936-03-05
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Granted: 1938-04-05
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Expires: 1956-03-05
Abstract
No abstract record available.
Inventors
- 👤 John J Grebe
- 👤 Hebbard George Miller
- 👤 Ralph E Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:22
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C10; C10G; C10G11/00; C10G11/12; C10G9/00; C10G9/26; C10G9/34; C10G9/36; C10G9/38
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) | 1941-04-04 | 1941-10-04 | 1942-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-04-04 | 1945-10-04 | 1946-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-04-04 | 1949-10-04 | 1950-04-05 | $7700.00 | Window Closed / Lapsed |