US2876071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing hydrogen sulfide by synthesis
Assignee: Chemetron Corp
•
Filing: 1955-05-31
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Granted: 1959-03-03
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Norman C Updegraff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/16; C01B17/161; C01B17/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE METHOD OF PRODUCING HYDROGEN SULFIDE BY SYNTHESIS FROM ITS ELEMENTS COMPRISING, PASSING HEATED HYDROGEN GAS AND MOLTEN SULFUR TO AND THROUGH A HOT REACTION ZONE, COLLECTING A MIXTURE OF SULFUR VAPOR AND HYDROGEN GAS IN SAID ZONE AND EXOTHERMICALLY REACTING THE SAME, AND COOLING SUBSTANTIALLY ALL OF THE FORMED HYDROGEN SUL-
Claim 2
Independent Claim
52 words
THE METHOD OF PRODUCING HYDROGEN SULFIDE BY SYNTHESIS FROM ITS ELEMENTS COMPRISING, PASSING HEATED HYDROGEN GAS AND MOLTEN SULFUR TO AND THROUGH A HOT REACTION ZONE, COLLECTING A MIXTURE OF SULFUR VAPOR AND HYDROGEN GAS IN SAID ZONE AND EXOTHERMICALLY REACTING THE SAME, AND COOLING SUBSTANTIALLY ALL OF THE FORMED HYDROGEN SUL-
References Cited (Backward Citations)
US1700578A
Cited
DE558432C
Cited
US2259901A
Cited
US2214859A
Cited
US2497095A
Cited
US2726933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |