US2586670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective gas adsorber
Assignee: Individual
•
Filing: 1948-05-04
•
Granted: 1952-02-19
•
Expires: 1968-05-04
Abstract
No abstract record available.
Inventors
- 👤 Christian J Lambertsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:07
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0446; B01D2257/00; B01D2257/50; B01D2257/504; B01D53/0415; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US805305A
Cited
US1621026A
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GB252610A
Cited
US1944279A
Cited
US2115946A
Cited
US2116537A
Cited
CH214929A
Cited
US2345530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |