Patent US2795544A successfully refreshed from Google Patents.
US2795544A
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Treatment of liquors containing thiocyanate, thiosulphate, and phenols
Assignee: Permutit Co Ltd
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Filing: 1953-09-14
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Granted: 1957-06-11
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Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 Williams Thomas Henry
- 👤 Harborough Market
- 👤 Hall Norman Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:17
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/001; C01; C01C; C01C3/00; C01C3/20; C02; C02F; C02F1/00; C02F1/72; C02F1/78; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/908; Y10S210/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS OF PURIFYING A LIQUOR PRODUCED DURING THE CARBONISATION OF COAL WHICH COMPRISES PASSING THE LIQUOR THROUGH A FIXED AMMONIA STILL, REMOVING ANY SUSPENDED LIME, REDUCING THE PH OF THE LIQUOR TO NOT MORE THAN 8.4, TREATING THE LIQUOR WITH OZONE TO OXIDISE THE THIOCYANATE AND THIOSUPHATE PREFERENTIALLY, REMOVING OR NEUTRALISING PRODUCTS OF OXIDATION AND REMOVING THE PHENOLS.
Claim 2
Dependent Claim
59 words
A PROCESS OF PURIFYING A LIQUOR PRODUCED DURING THE CARBONISATION OF COAL WHICH COMPRISES PASSING THE LIQUOR THROUGH A FIXED AMMONIA STILL, REMOVING ANY SUSPENDED LIME, REDUCING THE PH OF THE LIQUOR TO NOT MORE THAN 8.4, TREATING THE LIQUOR WITH OZONE TO OXIDISE THE THIOCYANATE AND THIOSUPHATE PREFERENTIALLY, REMOVING OR NEUTRALISING PRODUCTS OF OXIDATION AND REMOVING THE PHENOLS.
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |