US3099535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering sulphur
Assignee: Individual
•
Filing: 1960-12-30
•
Granted: 1963-07-30
•
Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Maezawa Masanori
- 👤 Kuragano Taketoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:41
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/128; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN A PROCESS OF REMOVING THE SULPHUR OF HYDROGEN SULPHIDE FROM A HYDROGEN SULPHIDE CONTAINING GAS BY CATALYTICALLY OXIDIZING THE HYDROGEN SULPHIDE, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE GAS AND AN OXYGENCONTAINING MEDIUM WITH AAN AQUEOUS ALKALINE LIQID CONTAINING A CATALYST COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
48 words
IN A PROCESS OF REMOVING THE SULPHUR OF HYDROGEN SULPHIDE FROM A HYDROGEN SULPHIDE CONTAINING GAS BY CATALYTICALLY OXIDIZING THE HYDROGEN SULPHIDE, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE GAS AND AN OXYGENCONTAINING MEDIUM WITH AAN AQUEOUS ALKALINE LIQID CONTAINING A CATALYST COMPOUND SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US1313370A
Cited
US1937196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |