US4038206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyalkyl locust bean/xanthomonas hydrophilic colloid blends
Assignee: General Mills Chemicals Inc
•
Filing: 1976-01-15
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Granted: 1977-07-26
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Expires: 1996-01-15
Abstract
Abstract A blend of xanthomonas gum and water soluble hydroxyalkyl ether of locust bean gum which has unique thickening properties. The blend is particularly useful in drilling oil wells and in oil well fracturing fluids.
Inventors
- 👤 Curtis Lee Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:07
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0021; C09K3/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A thickener blend comprising about 5% to 70% xanthomonas gum by weight of the thickener blend and about 95% to 30% hydroxyethyl ether of locust bean gum having a molar ratio of substitution of about 0.05 to 0.50 moles of ethylene oxide to one mole of locust bean gum.
Claim 2
Dependent Claim
49 words
A thickener blend comprising about 5% to 70% xanthomonas gum by weight of the thickener blend and about 95% to 30% hydroxyethyl ether of locust bean gum having a molar ratio of substitution of about 0.05 to 0.50 moles of ethylene oxide to one mole of locust bean gum.
Claim 3
Dependent Claim
36 words
The thickener blend of claim 1 wherein the thickener blend comprises about 10% to 40% xanthomonas gum by weight of the blend and about 90% to 60% hydroxyethyl locust bean gum by weight of the blend.
Claim 4
Dependent Claim
17 words
The thickener blend of claim 2 wherein the molar ratio of substitution is about 0.1 to 0.35.
Claim 5
Dependent Claim
49 words
A thickener blend comprising about 5% to 70% xanthomonas gum by weight of the thickener blend and about 95% to 30% hydroxypropyl ether of locust bean gum having a molar ratio of substitution of about 0.05 to 0.50 moles of propylene oxide to one mole of locust bean gum.
Claim 6
Dependent Claim
49 words
A thickener blend comprising about 5% to 70% xanthomonas gum by weight of the thickener blend and about 95% to 30% hydroxypropyl ether of locust bean gum having a molar ratio of substitution of about 0.05 to 0.50 moles of propylene oxide to one mole of locust bean gum.
Claim 7
Dependent Claim
36 words
The thickener blend of claim 4 wherein the thickener blend comprises about 10% to 40% xanthomonas gum by weight of the blend and about 90% to 60% hydroxypropyl locust bean gum by weight of the blend.
Claim 8
Dependent Claim
17 words
The thickener blend of claim 5 wherein the molar ratio of substitution is about 0.1 to 0.35.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |