US3092461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing liquid hydrogen
Assignee: Air Products and Chemicals Inc
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Filing: 1960-01-20
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Granted: 1963-06-04
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Expires: 1980-01-20
Abstract
No abstract record available.
Inventors
- 👤 Arend Peter C Vander
- 👤 Jr Lee S Gaumer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:25
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/0002; F25J1/0005; F25J1/001; F25J1/003; F25J1/0032; F25J1/004; F25J1/0047; F25J1/005; F25J1/0052; F25J1/006; F25J1/0062; F25J1/0067; F25J1/007; F25J1/0072; F25J1/02; F25J1/0203; F25J1/0204; F25J1/0205; F25J1/0221; F25J1/0243; F25J1/0244; F25J1/0245; F25J1/0249; F25J1/025; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J1/0267; F25J2205/00; F25J2205/60; F25J2210/00; F25J2210/42; F25J2220/00; F25J2220/02; F25J2245/00; F25J2245/90; F25J2250/00; F25J2250/02; Y; Y10; Y10S; Y10S62/00; Y10S62/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
PROCESS FOR PRODUCING LIQUID HYDROGEN OF HIGH PARA COMPOSITION WHICH COMPRISES COOLING HYDROGEN FEED TO PROVIDE LIQUID HYDROGEN, EFFECTING CATALYTIC CONVERSION OF ORTHO-HYDROGEN TO PARA-HYDROGEN WHILE COOLING THE HYDROGEN FEED, THE CATALYTIC CONVERSION TAKING PLACE AT A
Claim 2
Dependent Claim
37 words
PROCESS FOR PRODUCING LIQUID HYDROGEN OF HIGH PARA COMPOSITION WHICH COMPRISES COOLING HYDROGEN FEED TO PROVIDE LIQUID HYDROGEN, EFFECTING CATALYTIC CONVERSION OF ORTHO-HYDROGEN TO PARA-HYDROGEN WHILE COOLING THE HYDROGEN FEED, THE CATALYTIC CONVERSION TAKING PLACE AT A
References Cited (Backward Citations)
US2937076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |