US3408296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low liquid loss composition
Assignee: ConocoPhillips Co
•
Filing: 1965-01-25
•
Granted: 1968-10-29
•
Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 David A Kuhn
- 👤 Jack L Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:42
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/906; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A SOLID PARTICULARE, LOW FLUID LOSS ADDITIVE FOR AQUEOUS FRACTURING MEDIA COMPRISING: (A) ABOUT 100 TO ABOUT 150 PARTS BY WEIGHT OF A LOW DENSITY PARTICULATE SILICATE MATERIAL HAVING TWO DI MENSIONS SUBSTANTIALLY GREATHER THAN THE THIRD DIMENSION SELECTED FROM THE CLASS CONSISTING OF PERLITE AND DIATOMACEOUS EARTH, (B) ABOUT 250 TO ABOUT 350 PARTS STARCH, AND (C) ABOUT 125 TO ABOUT 175 PARTS WATER-SWELLABLE CLAY.
Claim 2
Dependent Claim
66 words
A SOLID PARTICULARE, LOW FLUID LOSS ADDITIVE FOR AQUEOUS FRACTURING MEDIA COMPRISING: (A) ABOUT 100 TO ABOUT 150 PARTS BY WEIGHT OF A LOW DENSITY PARTICULATE SILICATE MATERIAL HAVING TWO DI MENSIONS SUBSTANTIALLY GREATHER THAN THE THIRD DIMENSION SELECTED FROM THE CLASS CONSISTING OF PERLITE AND DIATOMACEOUS EARTH, (B) ABOUT 250 TO ABOUT 350 PARTS STARCH, AND (C) ABOUT 125 TO ABOUT 175 PARTS WATER-SWELLABLE CLAY.
References Cited (Backward Citations)
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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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |