US3058800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrolysis of carbonyl sulfide
Assignee: Dow Chemical Co
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Filing: 1960-04-28
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Granted: 1962-10-16
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Ludo K Frevel
- 👤 Leonard J Kressley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:58
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/34; C07; C07C; C07C7/00; C07C7/148; C07C7/14858; C07C7/14866
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS WHICH COMPRISESD PASSING GASEOUS CARBONBONYL SULFIDE AND WATGER CARRIED IN A GAS SELECTED FROM THE GROUP CONSISTING OF NITROGEN AND GASEOUS HYDROCARBONS INTO CONTACT WITH AN ALKALINE, ACTIVATED ALUMINA CATALYST, HAVING FROM ABOUT 0.15 TO ABOUT 3.0 PERCENT BY WEIGHT OF ALKALI ATOMS SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM AFFIXED THEREON AT A TEMPERATURE BETWEEN ABOUT 35* C, AND ABOUT 250* C, WHEREBY THE CARBONYL SULFIDE AND WATER ARE REACTED TO PRODUCE CARBON DIOXIDE AND HYDROGEN SULFIDE.
Claim 2
Dependent Claim
82 words
THE PROCESS WHICH COMPRISESD PASSING GASEOUS CARBONBONYL SULFIDE AND WATGER CARRIED IN A GAS SELECTED FROM THE GROUP CONSISTING OF NITROGEN AND GASEOUS HYDROCARBONS INTO CONTACT WITH AN ALKALINE, ACTIVATED ALUMINA CATALYST, HAVING FROM ABOUT 0.15 TO ABOUT 3.0 PERCENT BY WEIGHT OF ALKALI ATOMS SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM AFFIXED THEREON AT A TEMPERATURE BETWEEN ABOUT 35* C, AND ABOUT 250* C, WHEREBY THE CARBONYL SULFIDE AND WATER ARE REACTED TO PRODUCE CARBON DIOXIDE AND HYDROGEN SULFIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |