US4016085A
Expired / Lapsed
US
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Production of heteropolysaccharide by fermentation of methanol
Assignee: Cornell Research Foundation Inc
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Filing: 1975-07-02
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Granted: 1977-04-05
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Expires: 1995-07-02
Abstract
Abstract Disclosed is a new heteropolysaccharide polymer and a method for producing this polymer by a fermentation process comprising culturing a heteropolysaccharide-producing strain of a micro-organism of the genus Methylomonas on an aqueous culture medium containing methanol as the sole source of assimilable carbon. Several uses for the heteropolysaccharide are also disclosed such as its use as a drag reducing agent, a thickening agent, an emulsifier, a soil suspending agent and a flocculant or deflocculant.
Inventors
- 👤 Robert K. Finn
- 👤 Alex L. Tannahill
- 👤 Joseph E. Laptewicz, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:28
CPC Classifications
C; C08; C08B; C08B37/00; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P19/00; C12P19/04; C12R; C12R2001/00; C12R2001/01; C12R2001/26; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A method of thickening an aqueous composition which comprises adding to said composition from 0.1 to 3.0% by weight of an heteropolysaccharide of bacterial origin having an intrinsic viscosity in the range of about 10 to 20 deciliters per gram and comprising the following constituents on a weight per cent basis: 1. Organic matter of 60 to 90% comprising a. 10 to 30% glucose; b. 3 to 15% mannose; c. 3 to 15% galactose; and d. 5 to 35% pyruvic acid; 2.
Claim 2
Independent Claim
82 words
A method of thickening an aqueous composition which comprises adding to said composition from 0.1 to 3.0% by weight of an heteropolysaccharide of bacterial origin having an intrinsic viscosity in the range of about 10 to 20 deciliters per gram and comprising the following constituents on a weight per cent basis: 1. Organic matter of 60 to 90% comprising a. 10 to 30% glucose; b. 3 to 15% mannose; c. 3 to 15% galactose; and d. 5 to 35% pyruvic acid; 2.
Claim 3
Dependent Claim
13 words
Inorganic matter of 10 to 40% comprising a. 5 to 25% phosphates; and
Claim 4
Dependent Claim
13 words
Inorganic matter of 10 to 40% comprising a. 5 to 25% phosphates; and
Claim 5
Dependent Claim
38 words
b. 5 to 25% cations. 2. The method according to claim 1, wherein said aqueous composition comprises a water flooding composition for subterranean petroleum-yielding formations comprising said polysaccharide in an amount of from 0.01 to 1.0% by weight.
Claim 6
Dependent Claim
29 words
The method according to claim 1, wherein said aqueous composition comprises an oil well drilling mud comprising said polysaccharide in an amount of from 0.05 to 3.0% by weight.
Claim 7
Dependent Claim
102 words
A water flooding composition for subterranean petroleum-yielding formations comprising an aqueous medium and from about 0.01 to 1.0% by weight of an heteropolysaccharide of bacterial origin having an intrinsic viscosity in the range of about 10 to 20 deciliters per gram and comprising the following constituents on a weight per cent basis: 1. Organic matter of 60 to 90% comprising a. 10 to 30% glucose; b. 3 to 15% mannose; c. 3 to 15% galactose; and d. 5 to 35% pyruvic acid; 2. Inorganic matter of 10 to 40 % comprising a. 5 to 25% phosphates; and b. 5 to 25% cations.
Claim 8
Dependent Claim
102 words
A water flooding composition for subterranean petroleum-yielding formations comprising an aqueous medium and from about 0.01 to 1.0% by weight of an heteropolysaccharide of bacterial origin having an intrinsic viscosity in the range of about 10 to 20 deciliters per gram and comprising the following constituents on a weight per cent basis: 1. Organic matter of 60 to 90% comprising a. 10 to 30% glucose; b. 3 to 15% mannose; c. 3 to 15% galactose; and d. 5 to 35% pyruvic acid; 2. Inorganic matter of 10 to 40 % comprising a. 5 to 25% phosphates; and b. 5 to 25% cations.
Claim 9
Dependent Claim
96 words
An aqueous oil well drilling mud comprising an aqueous medium and from about 0.05 to 3.0% of an heteropolysaccharide of bacterial origin having an intrinsic viscosity in the range of about 10 to 20 deciliters per gram and comprising the following constituents on a weight percent basis: 1. Organic matter of 60 to 90% comprising a. 10 to 30% glucose; b. 3 to 15% mannose; c. 3 to 15% galactose; and d. 5 to 35% pyruvic acid. 2. Inorganic matter of 10 to 40% comprising a. 5 to 25% phosphates; and b. 5 to 25% cations.
Claim 10
Dependent Claim
96 words
An aqueous oil well drilling mud comprising an aqueous medium and from about 0.05 to 3.0% of an heteropolysaccharide of bacterial origin having an intrinsic viscosity in the range of about 10 to 20 deciliters per gram and comprising the following constituents on a weight percent basis: 1. Organic matter of 60 to 90% comprising a. 10 to 30% glucose; b. 3 to 15% mannose; c. 3 to 15% galactose; and d. 5 to 35% pyruvic acid. 2. Inorganic matter of 10 to 40% comprising a. 5 to 25% phosphates; and b. 5 to 25% cations.
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |