US1681753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of methanol
Assignee: Roessler and Hasslacher Chemical Co
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Filing: 1927-06-04
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Granted: 1928-08-21
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Expires: 1947-06-04
Abstract
No abstract record available.
Inventors
- 👤 Storch Henry Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:06
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C29/157; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
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) | 1931-08-21 | 1932-02-20 | 1932-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-21 | 1936-02-20 | 1936-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-21 | 1940-02-20 | 1940-08-21 | $7700.00 | Window Closed / Lapsed |