Patent US1922872A successfully refreshed from Google Patents.
US1922872A
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US
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Method of removing hydrogen sulphide from natural gas
Assignee: General Chemical Corp
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Filing: 1927-12-22
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Granted: 1933-08-15
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Expires: 1947-12-22
Abstract
No abstract record available.
Inventors
- 👤 Thompson Alfred Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:56
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/34; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/523; C07; C07C; C07C7/00; C07C7/148; C07C7/14808; C07C7/14816
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) | 1936-08-14 | 1937-02-13 | 1937-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-14 | 1941-02-13 | 1941-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-14 | 1945-02-13 | 1945-08-15 | $7700.00 | Window Closed / Lapsed |