US2602020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of hydrogen and carbon dioxide
Assignee: Girdler Corp
•
Filing: 1948-03-08
•
Granted: 1952-07-01
•
Expires: 1968-03-08
Abstract
No abstract record available.
Inventors
- 👤 Donald C Christain
- 👤 Robert M Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:21
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A PROCESS FOR PRODUCING HYDROGEN AND CARBON DIOXIDE WHICH COMPRISES PASSING A MIXTURE OF GASES CONTAINING CARBON MONOXIDE AND WATER VAPOR IN CONTACT WITH A CATALYST AT ELEVATED TEMPERATURES, THE STEP OF PREHEATING THE CATALYST BY PASSING STEAM IN CONTACT THEREWITH, SAID CATALYST BEING IN THE FORM OF A COMPACT SUBSTANTIALLY FREE OF WATER SOLUBLE MATERIALS AND HAVING BEEN PREPARED BY COMPRESSING UNDER A PRESSURE OF AT LEAST 35,000 POUNDS PER SQUARE INCH AN INTIMATE MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF IRON OXIDE, BETWEEN 1% AND 15% CHROMIUM OXIDE, A SMALL AMOUNT OF LUBRICANT, AND FROM ABOUT 21% TO ABOUT 28% WATER OF WHICH BETWEEN ABOUT 8% AND ABOUT 15% IS FREE WATER.
Claim 2
Dependent Claim
114 words
IN A PROCESS FOR PRODUCING HYDROGEN AND CARBON DIOXIDE WHICH COMPRISES PASSING A MIXTURE OF GASES CONTAINING CARBON MONOXIDE AND WATER VAPOR IN CONTACT WITH A CATALYST AT ELEVATED TEMPERATURES, THE STEP OF PREHEATING THE CATALYST BY PASSING STEAM IN CONTACT THEREWITH, SAID CATALYST BEING IN THE FORM OF A COMPACT SUBSTANTIALLY FREE OF WATER SOLUBLE MATERIALS AND HAVING BEEN PREPARED BY COMPRESSING UNDER A PRESSURE OF AT LEAST 35,000 POUNDS PER SQUARE INCH AN INTIMATE MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF IRON OXIDE, BETWEEN 1% AND 15% CHROMIUM OXIDE, A SMALL AMOUNT OF LUBRICANT, AND FROM ABOUT 21% TO ABOUT 28% WATER OF WHICH BETWEEN ABOUT 8% AND ABOUT 15% IS FREE WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |