US2895304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for gas purification
Assignee: Linde GmbH
•
Filing: 1956-05-31
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Granted: 1959-07-21
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Expires: 1976-05-31
Abstract
No abstract record available.
Inventors
- 👤 Wucherer Johannes
- 👤 Linde Hermann
- 👤 Jakob Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:09
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0223; F25J3/0219; F25J3/0228; F25J3/0276; F25J3/04; F25J3/04406; F25J3/04412; F25J3/04521; F25J3/04563; F25J3/04587; F25J2205/00; F25J2205/30; F25J2210/00; F25J2210/12; F25J2210/14; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/909
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |