US2613181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of oily waste water
Assignee: Infilco Inc
•
Filing: 1947-09-13
•
Granted: 1952-10-07
•
Expires: 1967-09-13
Abstract
No abstract record available.
Inventors
- 👤 Walter H Green
- 👤 Anton A Kalinske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:30
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/286; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/0208; B01D17/04; B01D17/047; C02F1/281; C02F1/283; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PROCESS OF REMOVING ADSORBABLE IMPURITIES FORM A LIQUID CONTAMINATED THEREWITH COMPRISING THE STEPS OF MAINTAINING A CONCENTRATED SUSPENSION OF SOLID PARTICLES OF CALCIUM CARBONATE, SAID SUSPENSION CONTAINING AT LEAST ABOUT 20 PERCENT SOLIDS, BY VOLUME, CONTINUALLY SUPPLYING TO SAID SUSPENSION NEW CALCIUM CARBONATE PARTICLES, INTRODUCING LIQUID TO BE TRATED INTO SAID SUSPENSION AND RETAINING IT THEREIN FOR A PERIOD OF TIME, APPLYING MECHANICAL ENERGY TO MAINTAIN A CIRCULATION OF, AND TO MIX NEW CALCIUM CARBONATE PARTICLES AND LIQUID TO BE TREATED WITH, SAID SUSPENSION, SEPARATING TREATED LIQUID FROM SAID CIRCULATING SUSPENSION AFTER SAID PERIOD OF TIME, AND REMOVING CONTAMINATED PARTICLES OF CALCIUM CARBONATE FROM SAID SUSPENSION AFTER A PERIOD OF RETENTION THEREIN LONGER THAN THE PERIOD OF RETENTION OF THE LIQUID AND AT THE RATE OF ADDITION OF NEW CALCIUM CARBONATE PARTICLES THERETO.
Claim 2
Dependent Claim
134 words
A PROCESS OF REMOVING ADSORBABLE IMPURITIES FORM A LIQUID CONTAMINATED THEREWITH COMPRISING THE STEPS OF MAINTAINING A CONCENTRATED SUSPENSION OF SOLID PARTICLES OF CALCIUM CARBONATE, SAID SUSPENSION CONTAINING AT LEAST ABOUT 20 PERCENT SOLIDS, BY VOLUME, CONTINUALLY SUPPLYING TO SAID SUSPENSION NEW CALCIUM CARBONATE PARTICLES, INTRODUCING LIQUID TO BE TRATED INTO SAID SUSPENSION AND RETAINING IT THEREIN FOR A PERIOD OF TIME, APPLYING MECHANICAL ENERGY TO MAINTAIN A CIRCULATION OF, AND TO MIX NEW CALCIUM CARBONATE PARTICLES AND LIQUID TO BE TREATED WITH, SAID SUSPENSION, SEPARATING TREATED LIQUID FROM SAID CIRCULATING SUSPENSION AFTER SAID PERIOD OF TIME, AND REMOVING CONTAMINATED PARTICLES OF CALCIUM CARBONATE FROM SAID SUSPENSION AFTER A PERIOD OF RETENTION THEREIN LONGER THAN THE PERIOD OF RETENTION OF THE LIQUID AND AT THE RATE OF ADDITION OF NEW CALCIUM CARBONATE PARTICLES THERETO.
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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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |