Patent US3615216A successfully refreshed from Google Patents.
US3615216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water gas shift process for producing hydrogen using a cesium compound catalyst
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1968-03-26
•
Granted: 1971-10-26
•
Expires: 1988-03-26
Abstract
Abstract Cesium salts derived from acids having an ionization constant below 1 X 10 3 and carried on a support having high-surface area are used to catalyze the reaction
Inventors
- 👤 Clyde L Aldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:25
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; B; B01; B01J; B01J23/00; B01J23/02; B01J23/04; B01J27/00; B01J27/20; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
16 words
The process of claim 1 in which the catalyst is cesium carbonate deposited on activated carbon.
Claim 2
Dependent Claim
16 words
The process of claim 1 in which the catalyst is cesium carbonate deposited on activated alumina.
Claim 3
Dependent Claim
23 words
The process of claim 1 in which the mixture of carbon monoxide and steam also contains small amounts of hydrogen sulfide as impurity.
Claim 4
Dependent Claim
16 words
The process of claim 1 in which the catalyst is cesium acetate deposited on activated carbon.
Claim 5
Dependent Claim
14 words
The process of claim 1 in which the catalyst is cesium carbonate on silica-alumina.
Claim 6
Dependent Claim
14 words
The process of claim 1 in which the catalyst is cesium carbonate on zeolite.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |