US3200067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous liquid-solid contact process
Assignee: Union Tank Car Co
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Filing: 1962-10-30
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Granted: 1965-08-10
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Expires: 1982-10-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Levendusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01D; B01D2201/00; B01D2201/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN THE PROCESS OF TREATING A LIQUID COMPRISING: (A) CONFINING A BED OF LIQUID TREATING PARTICLES SO THAT SAID BED IS MOTIONLESS, (B) PASSING AN UNTREATED LIQUID THROUGH SAID MOTIONLESS BED AT A PREDETERMINED FLOW RATE, (C) RECOVERING ALL LIQUID THAT HAS PASSED THROUGH SAID MOTIONLESS BED SO AS TO PROVIDE A CONSTANT VOLUME OF TREATED LIQUID, AND THEN (D) AFTER SUFFICIENT LIQUID HAS PASSED THROUGH SAID MOTIONLESS BED TO RENDER THE TREATING ACTION OF SAID PARTICLES LESS EFFECTIVE, MOVING SAID BED DURING INTERMITTENT PERIODS SO AS TO REPLACE THE MOST EXHAUSTED PARTICLES THEREOF WITH FRESH PARTICLES, A QUANTITY OF SAID UNTREAD LIQUID MOVING WITH SAID MOST EXHAUSTED PARTICLES SO AS TO BYPASS SAID BED, THE IMPROVED METHOD OF CONTINUOUSLY PROVIDING SAID CONSTANT VOLUME OF TREATED LIQUID COMPRISING THE STEP OF:
Claim 2
Dependent Claim
131 words
IN THE PROCESS OF TREATING A LIQUID COMPRISING: (A) CONFINING A BED OF LIQUID TREATING PARTICLES SO THAT SAID BED IS MOTIONLESS, (B) PASSING AN UNTREATED LIQUID THROUGH SAID MOTIONLESS BED AT A PREDETERMINED FLOW RATE, (C) RECOVERING ALL LIQUID THAT HAS PASSED THROUGH SAID MOTIONLESS BED SO AS TO PROVIDE A CONSTANT VOLUME OF TREATED LIQUID, AND THEN (D) AFTER SUFFICIENT LIQUID HAS PASSED THROUGH SAID MOTIONLESS BED TO RENDER THE TREATING ACTION OF SAID PARTICLES LESS EFFECTIVE, MOVING SAID BED DURING INTERMITTENT PERIODS SO AS TO REPLACE THE MOST EXHAUSTED PARTICLES THEREOF WITH FRESH PARTICLES, A QUANTITY OF SAID UNTREAD LIQUID MOVING WITH SAID MOST EXHAUSTED PARTICLES SO AS TO BYPASS SAID BED, THE IMPROVED METHOD OF CONTINUOUSLY PROVIDING SAID CONSTANT VOLUME OF TREATED LIQUID COMPRISING THE STEP OF:
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |