US3146200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized galactomannan gum solutions and process
Assignee: Stein Hall and Co Inc
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Filing: 1960-08-11
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Granted: 1964-08-25
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Expires: 1980-08-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Goldstein
- 👤 Emil N Alter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:14
CPC Classifications
C; C08; C08L; C08L5/00; C08L5/14; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206; C09K8/60; C09K8/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
A COLLOIDAL AQUEOUS SOLUTION OF GALACTOMANNAN MATERIALS HAVING A DECREASED RATE OF DEGRADATION AT ELEVATED TEMPERATURES COMPRISING WATER, A GALACTOMANNAN IN AN AMOUNT SUFFICIENT TO INCREASE THE VISCOSITY OF THE SOLUTION AND A SALT FROM THE GROUP CONSISTING OF WATER-SOLUBLE METAL SULFITES, THIOSULFATES AND ARSENITES WHICH IS EFFECTIVE IN RETARDING DEGRADATION OF THE GALACTOMANNAN MATERIAL IN THE PRESENCE OF WATER AT ELEVATED TEMPERATURES, SAID SOLUTION HAVING A PH OF FROM ABOUT 5.5 TO ABOUT 10, THE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO DECREASE THE RATE OF DEGRADATION OF THE GUM AT ELEVATED TEMPERATURES.
Claim 2
Dependent Claim
95 words
A COLLOIDAL AQUEOUS SOLUTION OF GALACTOMANNAN MATERIALS HAVING A DECREASED RATE OF DEGRADATION AT ELEVATED TEMPERATURES COMPRISING WATER, A GALACTOMANNAN IN AN AMOUNT SUFFICIENT TO INCREASE THE VISCOSITY OF THE SOLUTION AND A SALT FROM THE GROUP CONSISTING OF WATER-SOLUBLE METAL SULFITES, THIOSULFATES AND ARSENITES WHICH IS EFFECTIVE IN RETARDING DEGRADATION OF THE GALACTOMANNAN MATERIAL IN THE PRESENCE OF WATER AT ELEVATED TEMPERATURES, SAID SOLUTION HAVING A PH OF FROM ABOUT 5.5 TO ABOUT 10, THE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO DECREASE THE RATE OF DEGRADATION OF THE GUM AT ELEVATED TEMPERATURES.
Claim 3
Dependent Claim
71 words
AN OIL WELL DRILLING FLUID COMPRISING A GALACTOMANNAN GUM IN AN AMOUNT SUFFICIENT TO INCREASE THE VISCOSITY OF THE SOLUTION AND A SALT FROM THE GROUP CONSISTING OF WATER-SOLUBLE METAL SULFITES, THIOSULFITES AND ARSENITES, THE FLUID HAVING A PH OF FROM ABOUT 5.5 TO ABOUT 10, THE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO DECREASE THE RATE OF DEGRADATION OF THE GALACTOMANNAN AT ELEVATED TEMPERATURES IN THE PRESENCE OF WATER.
Claim 4
Dependent Claim
71 words
AN OIL WELL DRILLING FLUID COMPRISING A GALACTOMANNAN GUM IN AN AMOUNT SUFFICIENT TO INCREASE THE VISCOSITY OF THE SOLUTION AND A SALT FROM THE GROUP CONSISTING OF WATER-SOLUBLE METAL SULFITES, THIOSULFITES AND ARSENITES, THE FLUID HAVING A PH OF FROM ABOUT 5.5 TO ABOUT 10, THE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO DECREASE THE RATE OF DEGRADATION OF THE GALACTOMANNAN AT ELEVATED TEMPERATURES IN THE PRESENCE OF WATER.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |