US3119448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permeable well cement
Assignee: Cities Service Research and Development Co
•
Filing: 1962-10-05
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Granted: 1964-01-28
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Vaughan W Rhoades
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:20
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PUMPABLE CEMENT SLURRY FOR USE IN FORMING A PERMEABLE CEMENT FILTER IN EARTH FOROMATIONS COMPRISING BETWEEN ABOUT 140 AND ABOUT 200 PARTS BY WEIGHT INERT GRANULAR SOLIDS OF A SIZE RANGE BETWEEN ABOUT 10 AND ABOUT 40 MESH, BETWEEN ABOUT 20 AND ABOUT 65 PARTS BY WEIGHT OF PORTLAND TYPE CEMENT HAVING AN AVERAGE PARTICLE SIZE LESS THAN ABOUT 3 MICRONS, BETWEEN ABOUT 2 AND 4 PARTS BY WEIGHT OF WATER ABSORBING FIBROUS MATERIAL, BETWEEN ABOUT 0.01 AND ABOUT 1.0 PART BY WEIGHT OF A WATER-SOLUBLE GEL AND BETWEEN ABOUT 100 AND 200 PARTS BY WEIGHT WATER.
Claim 2
Dependent Claim
98 words
A PUMPABLE CEMENT SLURRY FOR USE IN FORMING A PERMEABLE CEMENT FILTER IN EARTH FOROMATIONS COMPRISING BETWEEN ABOUT 140 AND ABOUT 200 PARTS BY WEIGHT INERT GRANULAR SOLIDS OF A SIZE RANGE BETWEEN ABOUT 10 AND ABOUT 40 MESH, BETWEEN ABOUT 20 AND ABOUT 65 PARTS BY WEIGHT OF PORTLAND TYPE CEMENT HAVING AN AVERAGE PARTICLE SIZE LESS THAN ABOUT 3 MICRONS, BETWEEN ABOUT 2 AND 4 PARTS BY WEIGHT OF WATER ABSORBING FIBROUS MATERIAL, BETWEEN ABOUT 0.01 AND ABOUT 1.0 PART BY WEIGHT OF A WATER-SOLUBLE GEL AND BETWEEN ABOUT 100 AND 200 PARTS BY WEIGHT WATER.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |