US3960832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysaccharide and bacterial fermentation process for its preparation
Assignee: Individual
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Filing: 1975-01-30
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Granted: 1976-06-01
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Expires: 1995-01-30
Abstract
Abstract A process for producing a novel heteropolysaccharide by a bacterial fermentation in which a new bacteria is incubated in a final fermentation medium containing a suitable carbohydrate source, a source of magnesium ions, a source of phosphorus and nitrogen, and water, the incubation taking place at a temperature of about 25 to 35°C. for about 35 to 60 hours. The heteropolysaccharide produced by the above process are used to thicken aqueous media. Compositions containing the above polysaccharide in combination with certain salts containing di- and trivalent metal ions are useful for example, in drilling fluids, paint compositions, polishes and as additives for foods.
Inventors
- 👤 Kenneth Suk Kang
- 👤 William H. McNeely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:31
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; C08; C08B; C08B37/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/831; Y10S507/00; Y10S507/935; Y10S507/936; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
The compound Heteropolysaccharide-7, said heteropolysaccharide having an acetyl content of about 8-10%, and the carbohydrate portion thereof consisting of about 73% glucose, about 16% rhamnose and about 11% of a uronic acid, said heteropolysaccharide being soluble in water.
Claim 2
Dependent Claim
38 words
The compound Heteropolysaccharide-7, said heteropolysaccharide having an acetyl content of about 8-10%, and the carbohydrate portion thereof consisting of about 73% glucose, about 16% rhamnose and about 11% of a uronic acid, said heteropolysaccharide being soluble in water.
References Cited (Backward Citations)
US3382229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |