US4514563A
Expired / Lapsed
US
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Highly viscous polysaccharides
Assignee: Nakano Vinegar Co Ltd
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Filing: 1983-03-29
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Granted: 1985-04-30
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Expires: 2003-03-29
Abstract
Abstract Novel highly viscous polysaccharides composed mainly of (a) glucose, (b) galactose, (c) mannose, and (d) glucuronic acid, the molar ratio of (a):(b):(c):(d) being 10:3-6:0.5-2:0.5-2 (preferably 10:3-4:1-2:1-2). The invention also provides the process for producing the highly viscous polysaccharides which comprises cultivating a highly viscous polysaccharide-producing microorganism which is an acetic acid bacteria in a nutrient medium until a substantial amount of polysaccharides has accumulated in the nutrient medium, and recovering the accumulated polysaccharides from the nutrient medium.
Inventors
- 👤 Seiichi Fujiyama
- 👤 Hiroyuki Minakami
- 👤 Hiroshi Masai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:50
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; C08; C08B; C08B37/00; C08B37/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
Highly viscous polysaccharides composed mainly of (a) glucose, (b) galactose, (c) mannose, and (d) glucuronic acid, the molar ratio of (a):(b):(c):(d) being 10:3-6:0.5-2:0.5-2.
Claim 2
Dependent Claim
23 words
Highly viscous polysaccharides composed mainly of (a) glucose, (b) galactose, (c) mannose, and (d) glucuronic acid, the molar ratio of (a):(b):(c):(d) being 10:3-6:0.5-2:0.5-2.
Claim 3
Dependent Claim
13 words
The polysaccharides of claim 1, wherein the molar ratio of (a):(b):(c):(d) is 10:3-4:1-2:1-2.
Claim 4
Dependent Claim
38 words
The polysaccharide of claim 1 wherein the main repeating units of the polysaccharide has the following structure ##STR2## wherein m is 0 or 1, Glc is glucose, Gal is galactose, Man is mannose, and GlcUA is glucuronic acid.
References Cited (Backward Citations)
US4211774A
Cited
US4329448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |