US2613180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treating process
Assignee: Infilco Inc
•
Filing: 1948-07-03
•
Granted: 1952-10-07
•
Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Walter H Green
- 👤 Anton A Kalinske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:53
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/281; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/0208; B01D17/04; B01D17/047; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE PROCESS OF TREATING SEWAGE WHICH COMPRISES MAINTAINING A SUSPENSION OF CALCIUM CARBONATE IN SEWAGE UNDERGPOING TREATMENT, COMTINUOUSLY ADDING INCOMING SEWAGE TO BE TRATED TO SAID SESPENSION, THEREBY DISPLACING TREATED SEWAGE THEREFROM, SAID SIMULTANEOUSLY ADDING TO SAID SUSPENSION A QUANTITY OF CALCIUM CARBONATE ABOUT EQUAL TO THE B.O.D. OF THE INCOMING SEWAGE, APPLYING MECHANICAL AGITATION TO SAID SUSPENSION TO MIX THE NEWLY ENTERING SEWAGE AND CALOIUM CARBONATE THEREWITH, RETAINING AND AC-
Claim 2
Dependent Claim
71 words
THE PROCESS OF TREATING SEWAGE WHICH COMPRISES MAINTAINING A SUSPENSION OF CALCIUM CARBONATE IN SEWAGE UNDERGPOING TREATMENT, COMTINUOUSLY ADDING INCOMING SEWAGE TO BE TRATED TO SAID SESPENSION, THEREBY DISPLACING TREATED SEWAGE THEREFROM, SAID SIMULTANEOUSLY ADDING TO SAID SUSPENSION A QUANTITY OF CALCIUM CARBONATE ABOUT EQUAL TO THE B.O.D. OF THE INCOMING SEWAGE, APPLYING MECHANICAL AGITATION TO SAID SUSPENSION TO MIX THE NEWLY ENTERING SEWAGE AND CALOIUM CARBONATE THEREWITH, RETAINING AND AC-
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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 |