US3533732A
Expired / Lapsed
US
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Hydrogen sulfide removal from gas mixtures containing hydrogen sulfide and methane
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1968-06-21
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Granted: 1970-10-13
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Expires: 1988-06-21
Abstract
No abstract record available.
Inventors
- 👤 William P Moore
- 👤 Charles D Hardin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:33
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/523; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0404; C01B17/0408; C01B17/046; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA681438A
Cited
US1832325A
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US2168150A
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US2781863A
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US2946652A
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US3079238A
Cited
US3284158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |