Patent US3361534A successfully refreshed from Google Patents.
US3361534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen production by steam reforming
Assignee: Union Carbide Corp
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Filing: 1965-03-31
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Granted: 1968-01-02
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Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 John E Johnson
- 👤 Thomas L Singman
- 👤 Nathan P Vahldieck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:21
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0233; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/48; F25J3/0204; F25J3/0223; F25J3/0252; F25J3/06; F25J3/0605; F25J3/0625; F25J3/063; F25J3/0655; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/0244; C01B2203/0283; C01B2203/04; C01B2203/0415; C01B2203/046; C01B2203/0465; C01B2203/048; C01B2203/0495; C01B2203/08; C01B2203/0805; C01B2203/0811; C01B2203/0816; C01B2203/0838; C01B2203/0844; C01B2203/0866; C01B2203/0872; C01B2203/0883; C01B2203/0888; C01B2203/0894; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1094; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1241; C01B2203/14; C01B2203/142; C01B2203/143; C01B2203/146; C01B2203/147; C01B2203/148; C01B2203/80; C01B2203/82; F25J2200/00; F25J2200/70; F25J2205/00; F25J2205/02; F25J2205/04; F25J2205/30; F25J2235/00; F25J2235/60; F25J2245/00; F25J2245/02; F25J2270/00; F25J2270/12; F25J2270/42; F25J2270/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS FOR PRODUCING HIGH PURITY HYDROGEN BY THE STEPS OF CATALYTICALLY REACTING STEAM AND HYDROCARBONCONTAINING FEED AT ELEVATED PRESSURE OF AT LEAST 5 ATMOSPHERES AND A FIRST HIGHER TEMPERATURE TO FORM CARBON MONOXIDE AND HYDROGEN USING A HYDROCARBON-CONTAINING FUEL TO PROVIDE THE NECESSARY HEAT FOR SUCH REACTION, CATALYTICALLY CONVERTING STEAM AND SAID CARBON MONOXIDE TO CARBON DIOXIDE AND HYDROGEN AT A SECOND LOWER TEMPERATURE, SEPARATING AND DRYING SAID HYDROGEN AS CRUDE PRODUCT, THE IMPROVEMENT COMPRISING; (A) PROVIDING BETWEEN ABOUT 1.5 AND 4 MOLS STEAM PER ATOM CARBON IN SAID HYDROCARBON-CONTAINING FEED FOR THE CATALYTIC REACTION STEP AND REFORMING ONLY
Claim 2
Dependent Claim
101 words
IN A PROCESS FOR PRODUCING HIGH PURITY HYDROGEN BY THE STEPS OF CATALYTICALLY REACTING STEAM AND HYDROCARBONCONTAINING FEED AT ELEVATED PRESSURE OF AT LEAST 5 ATMOSPHERES AND A FIRST HIGHER TEMPERATURE TO FORM CARBON MONOXIDE AND HYDROGEN USING A HYDROCARBON-CONTAINING FUEL TO PROVIDE THE NECESSARY HEAT FOR SUCH REACTION, CATALYTICALLY CONVERTING STEAM AND SAID CARBON MONOXIDE TO CARBON DIOXIDE AND HYDROGEN AT A SECOND LOWER TEMPERATURE, SEPARATING AND DRYING SAID HYDROGEN AS CRUDE PRODUCT, THE IMPROVEMENT COMPRISING; (A) PROVIDING BETWEEN ABOUT 1.5 AND 4 MOLS STEAM PER ATOM CARBON IN SAID HYDROCARBON-CONTAINING FEED FOR THE CATALYTIC REACTION STEP AND REFORMING ONLY
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |