US3104704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid loss control in hydraulic cement slurries
Assignee: Dow Chemical Co
•
Filing: 1959-08-17
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Granted: 1963-09-24
•
Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Clare H Kucera
- 👤 Archie N Barron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:53
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/12; C04B24/14; C04B24/16; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF CEMENTING A ZONE IN A WELL PENETRATING A POROUS FORMATION, WHEREBY WATER LOSS FROM AN AQUEOUS SLURRY TO THE FORMATION IS LESSENED, CONSISTING OF ADMIXING BY WEIGHT BETWEEN 0.33 AND 3.3 PARTS OF A WATER-DISPERSIBLE NATURAL POLYMERIC SUBSTANCE HAVING A FORMULA SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Independent Claim
50 words
THE METHOD OF CEMENTING A ZONE IN A WELL PENETRATING A POROUS FORMATION, WHEREBY WATER LOSS FROM AN AQUEOUS SLURRY TO THE FORMATION IS LESSENED, CONSISTING OF ADMIXING BY WEIGHT BETWEEN 0.33 AND 3.3 PARTS OF A WATER-DISPERSIBLE NATURAL POLYMERIC SUBSTANCE HAVING A FORMULA SELECTED FROM THE CLASS CONSISTING OF
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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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |