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Patent US4490467A successfully refreshed from Google Patents.
US4490467A
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Polysaccharide production using novel strains of Pseudomonas mendocina
Assignee: Kelco Biospecialties Ltd
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Filing: 1982-10-29
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Granted: 1984-12-25
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Expires: 2002-10-29
Abstract
Abstract A process for producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues comprises growing a biologically pure culture of a Pseudomonas mendocina microorganism selected from the group consisting of NCIB 11687, 11688, and 11689 in an aqueous nutrient medium by submerged aerobic fermentation of an assimilable carbon source and recovering the polysaccharide. Biologically pure cultures of the organisms are another feature of the invention.
Inventors
- 👤 Trevor R. Jarman
- 👤 Andrew J. Hacking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:52
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P19/00; C12P19/04; C12R; C12R2001/00; C12R2001/01; C12R2001/38; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/874
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A biologically pure culture of a Pseudomonas mendocina microorganism selected from the group consisting of NCIB 11687, 11688, and 11689, said culture being capable of producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues in recoverable amounts by submerged, aerobic fermentation of an assimilable carbon source.
Claim 2
Dependent Claim
53 words
A biologically pure culture of a Pseudomonas mendocina microorganism selected from the group consisting of NCIB 11687, 11688, and 11689, said culture being capable of producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues in recoverable amounts by submerged, aerobic fermentation of an assimilable carbon source.
Claim 3
Dependent Claim
70 words
In a process for producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues which comprises growing a biologically pure culture of a Pseudomonas mendocina microorganism in an aqueous nutrient medium by submerged aerobic fermentation of an assimilable carbon source and recovering said polysaccharide, the improvement which comprises said P. mendocina microorganism being selected from the group consisting of NCIB 11687, 11688, and 11689.
Claim 4
Dependent Claim
70 words
In a process for producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues which comprises growing a biologically pure culture of a Pseudomonas mendocina microorganism in an aqueous nutrient medium by submerged aerobic fermentation of an assimilable carbon source and recovering said polysaccharide, the improvement which comprises said P. mendocina microorganism being selected from the group consisting of NCIB 11687, 11688, and 11689.
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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |