US2746561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning filters in vapor systems of catalytic reactions
Assignee: Pure Oil Co
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Filing: 1953-12-28
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Granted: 1956-05-22
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Oral L Beber
- 👤 Byron B Woertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:57
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/063; F02P7/0632; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1872; B66; B66B; B66B1/00; B66B1/24; B66B1/28; B66B1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
AN APPARATUS FOR REMOVING CATALYST FINES FROM A CATALYST FILTER LOCATED BETWEEN THE OUTLET OF A CATALYTIC REACTION ZONE AND THE CONDUIT FOR CONDUCTING GASEOUS REACTION PRODUCTS FROM SAID ZONE COMPRISING IN COMBINATION, A SOURCE OF GAS PRESSURE, A PRESSURE RESPONSIVE MEANS CONNECTED BETWEEN SAID SOURCE OF GAS PRESSURE AND SAID OUTLET CONDUIT, SAID GAS PRESSURE SOURCE BEING MAINTAINED AT A PRESSURE HIGHER THAN THE PRESSURE WITHIN SAID REACTION ZONE, SAID PRESSURE RESPONSIVE MEANS ADAPTED TO TRANSLATE PRESSURE INCREASES FROM THE GAS PRESSURE SIDE THEREOF TO THE OUTLET CONDUIT SIDE THEREOF, MEANS FOR CONTROLLING THE PASSAGE OF GAS PRESSURE TO SAID PRESSURE RESPONSIVE MEANS, MEANS FOR RELEASING THE GAS PRESSURE FROM SAID PRESSURE RESPONSIVE MEANS, AND A TIME CONTROL MEANS CONNECTED TO SAID CONTROL AND RELEASE MEANS TO ALTERNATELY AND INTERMITTENTLY OPEN AND CLOSE SAID CONTROL MEANS AND CLOSE AND OPEN SAID RELEASE MEANS, THEREBY TO CAUSE SAID PRESSURE RESPONSIVE MEANS, AND A TIME CONTROL MEANS BRATORY ACTION TO SAID REACTION PRODUCTS AND FREE SAID FILTER OF OCCLUDED CATALYST PARTICLES.
Claim 2
Independent Claim
170 words
AN APPARATUS FOR REMOVING CATALYST FINES FROM A CATALYST FILTER LOCATED BETWEEN THE OUTLET OF A CATALYTIC REACTION ZONE AND THE CONDUIT FOR CONDUCTING GASEOUS REACTION PRODUCTS FROM SAID ZONE COMPRISING IN COMBINATION, A SOURCE OF GAS PRESSURE, A PRESSURE RESPONSIVE MEANS CONNECTED BETWEEN SAID SOURCE OF GAS PRESSURE AND SAID OUTLET CONDUIT, SAID GAS PRESSURE SOURCE BEING MAINTAINED AT A PRESSURE HIGHER THAN THE PRESSURE WITHIN SAID REACTION ZONE, SAID PRESSURE RESPONSIVE MEANS ADAPTED TO TRANSLATE PRESSURE INCREASES FROM THE GAS PRESSURE SIDE THEREOF TO THE OUTLET CONDUIT SIDE THEREOF, MEANS FOR CONTROLLING THE PASSAGE OF GAS PRESSURE TO SAID PRESSURE RESPONSIVE MEANS, MEANS FOR RELEASING THE GAS PRESSURE FROM SAID PRESSURE RESPONSIVE MEANS, AND A TIME CONTROL MEANS CONNECTED TO SAID CONTROL AND RELEASE MEANS TO ALTERNATELY AND INTERMITTENTLY OPEN AND CLOSE SAID CONTROL MEANS AND CLOSE AND OPEN SAID RELEASE MEANS, THEREBY TO CAUSE SAID PRESSURE RESPONSIVE MEANS, AND A TIME CONTROL MEANS BRATORY ACTION TO SAID REACTION PRODUCTS AND FREE SAID FILTER OF OCCLUDED CATALYST PARTICLES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |