Patent US3335798A successfully refreshed from Google Patents.
US3335798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for disposal of waste solids
Assignee: Dow Chemical Co
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Filing: 1964-02-17
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Granted: 1967-08-15
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Charles W Querin
- 👤 Ralph C Hultin
- 👤 William C Bauman
- 👤 James L Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:55
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/04; B23Q16/06; B23Q16/065; C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; C02F3/046; F; F16; F16H; F16H43/00; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD FOR DISPOSING OF SOLID BIOLOGICALLY ACTIVATED WASTE MATERIAL WHICH COMPRISES: (A) PROVIDING SAID SOLID BIOLOGICALLY ACTIVATED WASTE MATERIALS IN AN AQUEOUS SLURRY, SAID SLURRY CONTAINING FROM ABOUT 1 TO 25 WEIGHT PERCENT OF SAID SOLID BIOLOGICALLY ACTIVATED WASTE MATERIALS AND PUMPING SAID SLURRY TO A WELL; (B) TRANSPORTING SAID SLURRY IN THE WELL TO A POROUS AND PERMEABLE UNDERGROUND FORMATION, SAID FORMATION HAVING A PERCENT POROSITY OF AT LEAST 5 PERCENT AND MINIMUM PERMEABILTIY OF ABOUT 10 MILLIDARCIES PER FOOT; AND (C) PRESSURE INJECTING SAID SLURRY UNDER POSITIVE WELL HEAD PRESSURE MAINTAINED BY THE PUMP DIRECTLY INTO SAID POROUS AND PERMEABLE UNDERGROUND FORMATION AT A PRESSUE SUCH THAT SAID FORMATION READILY ACCEPTS SAID SLURRY BUT AT A PRESSURE LESS THAN THAT REQUIRED TO FRACTURE SAID FORMATION.
Claim 2
Independent Claim
128 words
A METHOD FOR DISPOSING OF SOLID BIOLOGICALLY ACTIVATED WASTE MATERIAL WHICH COMPRISES: (A) PROVIDING SAID SOLID BIOLOGICALLY ACTIVATED WASTE MATERIALS IN AN AQUEOUS SLURRY, SAID SLURRY CONTAINING FROM ABOUT 1 TO 25 WEIGHT PERCENT OF SAID SOLID BIOLOGICALLY ACTIVATED WASTE MATERIALS AND PUMPING SAID SLURRY TO A WELL; (B) TRANSPORTING SAID SLURRY IN THE WELL TO A POROUS AND PERMEABLE UNDERGROUND FORMATION, SAID FORMATION HAVING A PERCENT POROSITY OF AT LEAST 5 PERCENT AND MINIMUM PERMEABILTIY OF ABOUT 10 MILLIDARCIES PER FOOT; AND (C) PRESSURE INJECTING SAID SLURRY UNDER POSITIVE WELL HEAD PRESSURE MAINTAINED BY THE PUMP DIRECTLY INTO SAID POROUS AND PERMEABLE UNDERGROUND FORMATION AT A PRESSUE SUCH THAT SAID FORMATION READILY ACCEPTS SAID SLURRY BUT AT A PRESSURE LESS THAN THAT REQUIRED TO FRACTURE SAID FORMATION.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |