Patent US1870096A successfully refreshed from Google Patents.
US1870096A
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US
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Manufacture of hydrogen by the partial liquefaction of gaseous mixtures containing the same
Assignee: Air Liquide SA
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Filing: 1925-05-04
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Granted: 1932-08-02
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Expires: 1945-05-04
Abstract
No abstract record available.
Inventors
- 👤 Claude Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:19
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J2210/00; F25J2210/14; F25J2215/00; F25J2215/10; Y; Y10; Y10S; Y10S62/00; Y10S62/931; Y10S62/934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-08-02 | 1936-02-01 | 1936-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-02 | 1940-02-01 | 1940-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-02 | 1944-02-01 | 1944-08-02 | $7700.00 | Window Closed / Lapsed |