US2984548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen sulfide conversion
Assignee: Universal Oil Products Co
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Filing: 1957-12-30
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Granted: 1961-05-16
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lester G Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:25
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0495; A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; C01B3/00; C01B3/50; C01B3/56; C01B3/58; C01B2203/00; C01B2203/04; C01B2203/0435; C01B2203/045; C01B2203/0465; C01B2203/048; C01B2203/0485
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
THE METHOD FOR PURIFYING A HYDROGEN GAS CONTAMINATED WITH HYDROGEN SULFIDE WHICH COMPRISES PASSING SAID HYDROGEN GAS IN A CONTINUOUS FLOWING STREAM OVER GLOWING TUNGSTEN WHEREBY SAID HYDROGEN SULFIDE IS DECOMPOSED AND SEPARATELY RECOVERING ELEMENTAL SULFUR THEREFROM.
References Cited (Backward Citations)
US2697064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |