US3257772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control method and apparatus for adsorption
Assignee: Phillips Petroleum Co
•
Filing: 1963-05-23
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Granted: 1966-06-28
•
Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Maddox De Wayne
- 👤 Robert C Bracken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:22
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0454; B01D2258/00; B01D2258/06; B01D2259/00; B01D2259/40; B01D2259/40003; B01D2259/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD FOR CONTROLLING FLOW THROUGH AN ADSORBER, WHICH COMPRISES THE STEPS OF: CONTINUOUSLY MEASURING THE PRESSURE DROP THROUGH SAID ADSORBER AND PRODUCING A FIRST CONTROL SIGNAL REPRESENTING SAID PRESSURE DROP; TRANSMITTING SAID FRIST SIGNAL TO ACTUATING MEANS FOR A BY-PASS VALVE FOR SAID ADSORBER TO MAINTAIN SAID VALVE CLOSED WHEN SAID PRESSURE DROP IS IN A NORMAL RANGE; REDUCING SAID FIRST SIGNAL TO PERMIT SAID VALVE TO OPEN WHEN SAID PRESSURE DROP EXCEEDS A PREDETERMINED VALUE;
Claim 2
Independent Claim
77 words
A METHOD FOR CONTROLLING FLOW THROUGH AN ADSORBER, WHICH COMPRISES THE STEPS OF: CONTINUOUSLY MEASURING THE PRESSURE DROP THROUGH SAID ADSORBER AND PRODUCING A FIRST CONTROL SIGNAL REPRESENTING SAID PRESSURE DROP; TRANSMITTING SAID FRIST SIGNAL TO ACTUATING MEANS FOR A BY-PASS VALVE FOR SAID ADSORBER TO MAINTAIN SAID VALVE CLOSED WHEN SAID PRESSURE DROP IS IN A NORMAL RANGE; REDUCING SAID FIRST SIGNAL TO PERMIT SAID VALVE TO OPEN WHEN SAID PRESSURE DROP EXCEEDS A PREDETERMINED VALUE;
References Cited (Backward Citations)
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |