US3426543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combining pure liquid and vapor nitrogen streams from air separation for crude hydrogen gas washing
Assignee: Linde GmbH
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Filing: 1967-10-17
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Granted: 1969-02-11
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Expires: 1987-10-17
Abstract
No abstract record available.
Inventors
- 👤 Rudolf Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:42
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0276; F25J3/0204; F25J3/0219; F25J3/0223; F25J3/04; F25J3/04006; F25J3/04078; F25J3/0409; F25J3/04248; F25J3/04333; F25J3/04351; F25J3/04357; F25J3/04406; F25J3/04412; F25J3/04521; F25J3/04563; F25J3/04587; F25J3/04612; F25J2205/00; F25J2205/02; F25J2205/24; F25J2205/30; F25J2210/00; F25J2210/12; F25J2210/20; F25J2235/00; F25J2235/42; Y; Y10; Y10S; Y10S62/00; Y10S62/931; Y10S62/934
Claims Analysis
Total Claims: 0
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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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |