US4732583B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas separation
Assignee: Phillips Petroleum Co
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Filing: 1984-12-03
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Granted: 1990-05-15
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Expires: 2004-12-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:07
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/506; B; B01; B01D; B01D53/00; B01D53/22; C01B3/501; F; F25; F25J; F25J3/00; F25J3/06; F25J3/0605; F25J3/062; F25J3/063; F25J3/0655; C01B2203/00; C01B2203/04; C01B2203/046; C01B2203/0465; C01B2203/048; F25J2205/00; F25J2205/40; F25J2205/80; F25J2210/00; F25J2210/12; F25J2245/00; F25J2245/02; F25J2270/00; F25J2270/12; F25J2270/42; F25J2280/00; F25J2280/02; Y; Y10; Y10S; Y10S62/00; Y10S62/931; Y10S62/932
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |