US3219579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and arrangement for treating flowable waste material
Assignee: Individual
•
Filing: 1963-10-17
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Granted: 1965-11-23
•
Expires: 1983-10-17
Abstract
No abstract record available.
Inventors
- 👤 Kranz Berthold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:55
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A METHOD OF TREATING FLOWABLE WASTE MATERIAL SUCH AS SEWAGE AND THE LIKE, COMPRISING THE STEPS OF PASSING FLOWABLE WASTE MATERIAL THROUGH A PLURALITY OF SUCCESSIVELY ARRANGED TREATING STAGES COMMUNICATING WITH EACH OTHER AND INCLUDING A FIRST GROUP OF TREATING STAGES FOR PREHEATING SAID MATERIAL, AN INTERMEDIATE STAGE FOR HEATING SAID MATERIAL TO AT LEASST THE STERILIZATION TEMPERATURE THEREOF, AND A SECOND GROUP OF TREATING SSTAGES FOR COOLING THE THUS STERILIZED MATERIAL, SAID TREATING STAGES COMMUNICATING WITH EACH OTHER; INTRODUCING STEAM FROM AN OUTSIDE SOURCE INTO SAID INTERMEDIATE TREATING STAGE SO AS TO HEAT SAID FLOWABLE WASTE MATERIAL THEREIN TO AT LEAST ITS STERILIZATION TEMPERATURE; CREATING A PARTIAL VACCUM IN SAID SECOND GROUP OF TREATING STAGES, WHEREBY STEAM
References Cited (Backward Citations)
GB876846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |