Patent US4247639A successfully refreshed from Google Patents.
US4247639A
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Bacterial polysaccharide
Assignee: Monsanto Co
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Filing: 1979-09-11
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Granted: 1981-01-27
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Expires: 1999-09-11
Abstract
Abstract A high-viscosity heteropolysaccharide composed of 33% mannose, 29% glucose, 21% galactose and 17% glucuronic acid, and containing 5.7% acetyl and 4.9% pyruvate.
Inventors
- 👤 Kenneth S. Kang
- 👤 George T. Veeder, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:16
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C04; C04B; C04B24/00; C04B24/24; C04B24/38; C09; C09D; C09D7/00; C09D7/40; C09D7/43; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P19/00; C12P19/04; C08L; C08L5/00; C12R; C12R2001/00; C12R2001/01; C12R2001/22; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/852
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A process for producing Heteropolysaccharide S-21 containing from about 30% to about 37% mannose, from about 26% to about 32% glucose, from about 19% to about 23% galactose and from about 15.3% to about 18.8% glucuronic acid and having an acetyl content of from about 5.1% to about 6.3% and a pyruvate content of from about 4.5% to about 5.4% that comprises growing the organism ATCC 31314 in an aqueous nutrient medium under submerged aerobic conditions and recovering said Heteropolysaccharide S-21.
Claim 2
Dependent Claim
81 words
A process for producing Heteropolysaccharide S-21 containing from about 30% to about 37% mannose, from about 26% to about 32% glucose, from about 19% to about 23% galactose and from about 15.3% to about 18.8% glucuronic acid and having an acetyl content of from about 5.1% to about 6.3% and a pyruvate content of from about 4.5% to about 5.4% that comprises growing the organism ATCC 31314 in an aqueous nutrient medium under submerged aerobic conditions and recovering said Heteropolysaccharide S-21.
Claim 3
Dependent Claim
18 words
A process according to claim 1 wherein the pH is controlled at from about 6 to about 7.
Claim 4
Dependent Claim
20 words
A process according to claim 1 wherein the temperature is controlled at from about 25° C. to about 35° C.
Claim 5
Dependent Claim
13 words
A fermentation beer containing from about 1.5% to about 2.1% of heteropolysaccharide S-21.
Claim 6
Dependent Claim
13 words
A fermentation beer containing from about 1.5% to about 2.1% of heteropolysaccharide S-21.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |