US3131075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density cementing composition
Assignee: Jersey Production Research Co
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Filing: 1960-04-25
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Granted: 1964-04-28
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:47
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A LOW DENSITY, HIGH EARLY STRENGTH CEMENTING COMPOSITION CONSITING ESSENTIALLY OF AN OIL-IN-WATER EMULSION, COLLOIDAL AMORPHOUS SILICA HAVING A PARTICLE SIZE WITHIN THE RANGE FROM ABOUT 0.005 TO ABOUT 0.025 MICRON AND HYDRAULIC CEMENT, SAID COLLOIDAL AMORPHOUS SILICA BEING PRESENT IN AN AMOUNT FROM ABOUT 1 TO ABOUT 3 GRAMS PER 100 GRAMS OF SAID CEMENT.
Claim 2
Dependent Claim
56 words
A LOW DENSITY, HIGH EARLY STRENGTH CEMENTING COMPOSITION CONSITING ESSENTIALLY OF AN OIL-IN-WATER EMULSION, COLLOIDAL AMORPHOUS SILICA HAVING A PARTICLE SIZE WITHIN THE RANGE FROM ABOUT 0.005 TO ABOUT 0.025 MICRON AND HYDRAULIC CEMENT, SAID COLLOIDAL AMORPHOUS SILICA BEING PRESENT IN AN AMOUNT FROM ABOUT 1 TO ABOUT 3 GRAMS PER 100 GRAMS OF SAID CEMENT.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |