US3150931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducing corrosion in hydrogen production
Assignee: Pullman Inc
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Filing: 1961-05-16
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Granted: 1964-09-29
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; C01B3/32; C01B3/34; C01B3/48; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/0283; C01B2203/04; C01B2203/0465; C01B2203/0495; C01B2203/08; C01B2203/0805; C01B2203/0811; C01B2203/0816; C01B2203/0866; C01B2203/0872; C01B2203/0877; C01B2203/0883; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1241; C01B2203/14; C01B2203/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS FOR THE PRODUCTION OF HYDROGEN COMPRISING CONTACTING A GAS CONTAINING CARBON MONOXIDE WITH STEAM IN A SHIFT CONVERSION ZONE MAINTAINED UNDER SUITABLE CONDITINS TO PRODUCE HYDROGEN AND CARBON DIOXIDE, AND COOLING THE EFFLUENT OF THE SHIFT CONVERSION ZONE TO CONDENSE STEAM, THE IMPROVEMENT FOR REDUCING CORROSION IN PROCESS EQUIPMENT CONTACTED BY STEAM CONDENSATE WHICH COMPRISES ADDING AMMONIA TO SAID PROCESS AT A POINT UPSTREAM FROM WHERE STEAM CONDENSES IN AN AMOUNT SUFFICIENT TO ADJUST THE PH OF SAID STEAM CONDENSATE TO A VALUE OF ABOUT 6.5 TO ABOUT 8.5.
Claim 2
Dependent Claim
92 words
IN A PROCESS FOR THE PRODUCTION OF HYDROGEN COMPRISING CONTACTING A GAS CONTAINING CARBON MONOXIDE WITH STEAM IN A SHIFT CONVERSION ZONE MAINTAINED UNDER SUITABLE CONDITINS TO PRODUCE HYDROGEN AND CARBON DIOXIDE, AND COOLING THE EFFLUENT OF THE SHIFT CONVERSION ZONE TO CONDENSE STEAM, THE IMPROVEMENT FOR REDUCING CORROSION IN PROCESS EQUIPMENT CONTACTED BY STEAM CONDENSATE WHICH COMPRISES ADDING AMMONIA TO SAID PROCESS AT A POINT UPSTREAM FROM WHERE STEAM CONDENSES IN AN AMOUNT SUFFICIENT TO ADJUST THE PH OF SAID STEAM CONDENSATE TO A VALUE OF ABOUT 6.5 TO ABOUT 8.5.
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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |