US3373085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying coke-works waste liquor
Assignee: United States Steel Corp
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Filing: 1962-09-12
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Granted: 1968-03-12
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Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 Philip X Masciantonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:12
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/005; C07C37/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN A METHOD OF RECOVERING PHENOL FROM COKE-WORKS WASTE WATER CONTAMINATED THEREWITH, THE STEPS COMPRISING BRINGING SAID WATER INTO CONTACT WITH COKING COAL, THEREBY PERMITTING ADSORPTION BY THE COAL OF PHENOL FROM THE WATER, DRAINING THE WATER FROM THE COAL, AND CHARGING THE COAL INTO A COKE OVEN.
Claim 2
Dependent Claim
48 words
IN A METHOD OF RECOVERING PHENOL FROM COKE-WORKS WASTE WATER CONTAMINATED THEREWITH, THE STEPS COMPRISING BRINGING SAID WATER INTO CONTACT WITH COKING COAL, THEREBY PERMITTING ADSORPTION BY THE COAL OF PHENOL FROM THE WATER, DRAINING THE WATER FROM THE COAL, AND CHARGING THE COAL INTO A COKE OVEN.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |