US3319716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid loss additive for well fluids, composition and process
Assignee: Halliburton Co
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Filing: 1965-10-21
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Granted: 1967-05-16
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Walter R Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74; C09K8/76; C09K8/66; C09K8/665; C09K8/84; C09K8/86; C09K8/88; C09K8/885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A FLUID LOSS ADDITIVE FOR WELL TREATING FLUIDS COMPRISING A MIXTURE OF FINELY DIVIDED PARTICLES OF AN OIL SOLUBLE RESIN SELECTED FROM THE MIXTURE CONSISTING OF DICYCLOPENTADIENE TYPE SYNTHETIC ALKYL AROMATIC PETROLEUM HYDROCARBONS, OIL SOLUBLE RESINS CONTAINING ROSIN ACID DIMERS AND PENTAERYTHRITOL ESTERS OF ROSIN ACID DIMERS AND FINELY DIVIDED PARTICLES OF A WATER SOLUBLE GUM.
Claim 2
Dependent Claim
56 words
A FLUID LOSS ADDITIVE FOR WELL TREATING FLUIDS COMPRISING A MIXTURE OF FINELY DIVIDED PARTICLES OF AN OIL SOLUBLE RESIN SELECTED FROM THE MIXTURE CONSISTING OF DICYCLOPENTADIENE TYPE SYNTHETIC ALKYL AROMATIC PETROLEUM HYDROCARBONS, OIL SOLUBLE RESINS CONTAINING ROSIN ACID DIMERS AND PENTAERYTHRITOL ESTERS OF ROSIN ACID DIMERS AND FINELY DIVIDED PARTICLES OF A WATER SOLUBLE GUM.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |