Patent US2150887A successfully refreshed from Google Patents.
US3933788A
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Polysaccharide and bacterial fermentation process for its preparation
Assignee: Kelco Co
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Filing: 1973-06-26
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Granted: 1976-01-20
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Expires: 1993-06-26
Abstract
Abstract A process for producing a heteropolysaccharide by a bacterial fermentation procedure in which a new species of bacteria is incubated in a fermentation medium which contains a carbon source, preferably a hydrolyzed starch, a source of magnesium ions, a source of phosphorous, a source of nitrogen and water with the incubation taking place at a temperature of about 28° to about 35°C. The heteropolysaccharide produced by the above fermentation process. A thickened aqueous media containing an effective quantity of the heteropolysaccharide to thicken the media.
Inventors
- 👤 Kenneth Suk Kang
- 👤 George T. Veeder, III
- 👤 Danny D. Richey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:38
CPC Classifications
C; C08; C08B; C08B37/00; C12; C12P; C12P21/00; C12P21/005; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/847; Y10S507/00; Y10S507/907; Y10S507/925; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
Heteropolysaccharide-10, said heteropolysaccharide containing about 3% by weight of protein and about 97% by weight carbohydrate, the carbohydrate portion of which contains about 19% by weight of a uronic acid, about 39% by weight of glucose, about 29% by weight of galactose, and about 13% by weight of fucose, said heteropolysaccharide being compatible with Methylene Blue chloride dye, being substantially insoluble in dimethylsulfoxide and soluble in water, having an acetyl content of about 4.5%, and a specific rotation of [α] D = + 106° (c 0.25, H 2 O).
Claim 2
Dependent Claim
89 words
Heteropolysaccharide-10, said heteropolysaccharide containing about 3% by weight of protein and about 97% by weight carbohydrate, the carbohydrate portion of which contains about 19% by weight of a uronic acid, about 39% by weight of glucose, about 29% by weight of galactose, and about 13% by weight of fucose, said heteropolysaccharide being compatible with Methylene Blue chloride dye, being substantially insoluble in dimethylsulfoxide and soluble in water, having an acetyl content of about 4.5%, and a specific rotation of [α] D = + 106° (c 0.25, H 2 O).
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |