Patent US4483848A successfully refreshed from Google Patents.
US4483848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentrifice composition comprising microbial heteropolysaccharide
Assignee: Lever Brothers Co
•
Filing: 1982-08-23
•
Granted: 1984-11-20
•
Expires: 2002-08-23
Abstract
Abstract An heteropolysaccharide known as Bipolymer 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 . Bipolymer 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
2026-10-28 06:25
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; C12N1/00; C12N1/20; C12N1/205; C12N15/00; C12N15/09; C12N15/11; C12N15/52; C12P; C12P19/00; C12P19/04; C08L; C08L5/00; C12R; C12R2001/00; C12R2001/01; C12R2001/07; C12R2001/12; C12R2001/185; C12R2001/19; C12R2001/22; C12R2001/38; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/838; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
A dentifrice composition exhibiting pseudoplasticity comprising water, a humectant, a surfactant, a solid particulate abrasive and an amount effective to generate said pseudoplasticity of Biopolymer PS 87, said Biopolymer PS 87 being 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 said 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
112 words
A dentifrice composition exhibiting pseudoplasticity comprising water, a humectant, a surfactant, a solid particulate abrasive and an amount effective to generate said pseudoplasticity of Biopolymer PS 87, said Biopolymer PS 87 being 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 said 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
60 words
A liqulid thixotropic gel dentifrice according to claim 1, consisting essentially of: (i) 25 to 35% by weight of water; (ii) 20 to 35% by weight of a humectant; (iii) 0.5 to 2% by weight of a surfactant; (iv) 0.3 to 2% by weight of a Biopolymr PS 87; (v) 20 to 35% by weight of a solid particulate abrasive.
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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |