US4329448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbial heteropolysaccharide
Assignee: Lever Brothers Co
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Filing: 1980-07-07
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Granted: 1982-05-11
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Expires: 2000-07-07
Abstract
Abstract An heteropolysaccharide known as Biopolymer PS 87 comprises glucose, galactose, mannose, glucuronic acid and fucose. Biopolymer PS 87 is pseudoplastic, has a consistency at 20° C. of at least 150 poise and a yield stress value at 20° C. of at least 30 dynes/cm 2 . Biopolymer PS 87 is synthesised by a strain of Bacillus polymyxa or a genetically similar micro-organism and has many domestic and industrial uses as a suspending agent or thickener.
Inventors
- 👤 Roger B. Cox
- 👤 David C. Steer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:32
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; A; A23; A23L; A23L29/00; A23L29/20; A23L29/269; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61Q; A61Q11/00; C08; C08B; C08B37/00; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18; C09D; C09D7/00; C09D7/40; C09D7/43; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C12; C12N; C12N15/00; C12N15/09; C12N15/11; C12N15/52; C12P; C12P19/00; C12P19/04; C08L; C08L5/00; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
Biopolymer PS 87, a heteropolysaccharide which comprises from 40 to 45% by weight of glucose, from 10 to 20% by weight galactose, from 25 to 30% by weight mannose, from 6 to 13% by weight glucuronic acid and from 0 to 1.5% by weight fucose, a 1% by weight solution of Biopolymer PS 87 having pseudoplastic properties, a consistency at 20° C. of at least 150 poise and a yield stress value at 20° C. of at least 30 dynes/cm 2 .
Claim 2
Dependent Claim
82 words
Biopolymer PS 87, a heteropolysaccharide which comprises from 40 to 45% by weight of glucose, from 10 to 20% by weight galactose, from 25 to 30% by weight mannose, from 6 to 13% by weight glucuronic acid and from 0 to 1.5% by weight fucose, a 1% by weight solution of Biopolymer PS 87 having pseudoplastic properties, a consistency at 20° C. of at least 150 poise and a yield stress value at 20° C. of at least 30 dynes/cm 2 .
Claim 3
Dependent Claim
30 words
Biopolymer PS 87 according to claim 1, comprising 41% by weight glucose, 12% by weight galactose, 28% by weight mannose, 9% by weight glucuronic acid and 0.8% by weight fucose.
Claim 4
Dependent Claim
19 words
Biopolymer PS 87 according to claim 1 having a consistency at 20° C. of from 200 to 400 poise.
Claim 5
Dependent Claim
23 words
Biopolymer PS 87 according to claim 1 having a yield stress value at 20° C. of from 50 to 100 dynes/cm 2 .
Claim 6
Dependent Claim
17 words
Biopolymer PS 87 according to claim 1 having a specific rotatory power of [α] D 25 =+60.
Claim 7
Dependent Claim
15 words
Biopolymer PS 87 according to claim 1 having a molecular weight of 34±4×10 4 .
References Cited (Backward Citations)
GB1357323A
Cited
US3963832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |