Patent US3068450A successfully refreshed from Google Patents.
US1620192A
Expired / Lapsed
US
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Process for the separation of the constituents of gaseous mixtures such as those containing hydrogen
Assignee: LAXOTE Inc
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Filing: 1923-03-12
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Granted: 1927-03-08
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Expires: 1943-03-12
Abstract
No abstract record available.
Inventors
- 👤 Claude Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:26
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/06; 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) | 1930-03-07 | 1930-09-06 | 1931-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-03-07 | 1934-09-06 | 1935-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-03-07 | 1938-09-06 | 1939-03-08 | $7700.00 | Window Closed / Lapsed |