Patent US3220947A successfully refreshed from Google Patents.
US3220947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agent for thickening aqueous liquids
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1962-06-26
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Granted: 1965-11-30
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Expires: 1982-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar W Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:48
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206; Y; Y10; Y10S; Y10S507/00; Y10S507/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A COMPOSITION ADAPTED FOR USE AS A THICKENING AGENT IN THE PRODUCTION OF SALT-WATER DRILLING MUDS COMPRISING A MIXTURE OF: COLLOIDAL ATTAPULGITE CLAY, A MAGNESIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDRATABLE MGO AND MG(OH)2, AND UNOXIDIZED MANNOGALACTAN OBTAINED FROM GUAR, SAID MAGNESIUM COMPOUND AND SAID UNOXIDIZED MANNOGALACTAN BEING PRESENT IN COMBINED AMOUNT OF ABOUT 1% TO 4% OF THE WEIGHT OF SAID CLAY AND IN THE PROPORTION OF ABOUT 50 TO 25 PARTS BY WEIGHT MANNOGALACTAN TO ABOUT 50 TO 75 PARTS BY WEIGHT OF SAID MAGNESIUM COMPOUND, THE QUANTITIES OF SAID MAGNESIUM MATERIAL AND SAID UNOXIDIZED MANNOGALACTAN ADDITIVES BEING SUCH AS TO EFFECT A SYNERGISTIC IMPROVEMENT IN THE SATURATED SALT-WATER MUD YIELD OVER THE SATURATED SALT-WATER MUD YIELD OF A MIXTURE OF SAID ATTAPULGITE CLAY CONTAINING ONLY ONE OF SAID ADDITIVES.
Claim 2
Dependent Claim
134 words
A COMPOSITION ADAPTED FOR USE AS A THICKENING AGENT IN THE PRODUCTION OF SALT-WATER DRILLING MUDS COMPRISING A MIXTURE OF: COLLOIDAL ATTAPULGITE CLAY, A MAGNESIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDRATABLE MGO AND MG(OH)2, AND UNOXIDIZED MANNOGALACTAN OBTAINED FROM GUAR, SAID MAGNESIUM COMPOUND AND SAID UNOXIDIZED MANNOGALACTAN BEING PRESENT IN COMBINED AMOUNT OF ABOUT 1% TO 4% OF THE WEIGHT OF SAID CLAY AND IN THE PROPORTION OF ABOUT 50 TO 25 PARTS BY WEIGHT MANNOGALACTAN TO ABOUT 50 TO 75 PARTS BY WEIGHT OF SAID MAGNESIUM COMPOUND, THE QUANTITIES OF SAID MAGNESIUM MATERIAL AND SAID UNOXIDIZED MANNOGALACTAN ADDITIVES BEING SUCH AS TO EFFECT A SYNERGISTIC IMPROVEMENT IN THE SATURATED SALT-WATER MUD YIELD OVER THE SATURATED SALT-WATER MUD YIELD OF A MIXTURE OF SAID ATTAPULGITE CLAY CONTAINING ONLY ONE OF SAID ADDITIVES.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |