US3377812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rearrangement of flow-thru serial adsorbers to remove gaseous constituents
Assignee: BOC Group Ltd
•
Filing: 1965-03-10
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Granted: 1968-04-16
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Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Garrett Michael Ernest
- 👤 Webber David Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:20
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/028; F25J3/029; B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; F25J3/0276; F25J3/04; F25J3/04151; F25J3/04163; F25J3/04169; B01D2256/00; B01D2256/18; B01D2257/00; B01D2257/10; B01D2257/102; B01D2259/00; B01D2259/40; B01D2259/403; B01D2259/41; F25J2205/00; F25J2205/40; F25J2205/60; F25J2215/00; F25J2215/34; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2960836A
Cited
US2799364A
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US3073128A
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US3023841A
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US3254496A
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US3245205A
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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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |