US3513631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-reactivatable adsorbent gas fractionator and process
Assignee: Pall Corp
•
Filing: 1966-09-14
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Granted: 1970-05-26
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Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Chesterfield F Seibert
- 👤 Marcel G Verrando Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:55
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B21/33; F26B21/331; B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0454; B01D53/26; B01D53/261; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/40096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2801706A
Cited
US2992703A
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US3085379A
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US3147095A
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US3141748A
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US3397511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |