US2041840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for hydrogenating sulphur compounds
Assignee: EIDP Inc
•
Filing: 1934-08-03
•
Granted: 1936-05-26
•
Expires: 1954-08-03
Abstract
No abstract record available.
Inventors
- 👤 Lazier Wilbur Arthur
- 👤 Vaughen John Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:54
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/34; C01; C01B; C01B17/00; C01B17/16; C01B17/165; C07; C07C; C07C1/00; C07C1/32; C07C1/321; C07C1/322; C07C7/00; C07C7/148; C07C7/163; C10G; C10G45/00; C10G45/02; C10G45/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1939-05-26 | 1939-11-25 | 1940-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-26 | 1943-11-25 | 1944-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-26 | 1947-11-25 | 1948-05-26 | $7700.00 | Window Closed / Lapsed |