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US4734403A Expired / Lapsed US ⏱️ 0.0 years remaining

Membrane polysaccharides which are useful as immunostimulants

Assignee: PF MEDICAMENT A CORP OF FRANCE
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Filing: 1985-08-29
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Granted: 1988-03-29
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Expires: 2005-08-29
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Abstract

Abstract The present invention relates to a membrane polysaccharide of bacterial origin having the following quantitative analytical composition: ______________________________________ galactose content 66 ± 6% content of hexoses other than galactose <1% hexosamine (glucosamine) content 8.5 ± 2% amino acid content 5 ± 2% fatty acid content <1% nucleic acid content <0.005% protein content <0.03% and molecular weight: 90,000 ± 10,000. ______________________________________

Inventors

  • 👤 Lucien Dussourd d'Hinterland
  • 👤 Gerard Normier
  • 👤 Anne-Marie Pinel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 06:02
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; A61K39/00; A61K39/39; A61P; A61P37/00; A61P37/02; A61P37/04; C; C12; C12P; C12P19/00; C12P19/04; C12P21/00; C12P21/005; A61K2039/555; A61K2039/55511; A61K2039/55583

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 59 words
Membrane polysaccharide of bacterial origin useful as a immunostiulant and having the following quantitative analytical composition: ______________________________________ galactose content 66 ± 6% content of hexoses other than galactose <1% hexosamine (glucosamine) content 8.5 ± 2% amino acid content 5 ± 2% fatty acid content <1% nucleic acid content <0.005% protein content <0.3% and molecular weight: 90,000 ± 10,000. ______________________________________
Claim 2
Dependent Claim 59 words
Membrane polysaccharide of bacterial origin useful as a immunostiulant and having the following quantitative analytical composition: ______________________________________ galactose content 66 ± 6% content of hexoses other than galactose <1% hexosamine (glucosamine) content 8.5 ± 2% amino acid content 5 ± 2% fatty acid content <1% nucleic acid content <0.005% protein content <0.3% and molecular weight: 90,000 ± 10,000. ______________________________________
Claim 3
Dependent Claim 35 words
Polysaccharide of molecular weight of about 60,000±10,000 daltons and having a polymeric structure comprising of about 40±7 repeating units of the monomer: ##STR3## where Gal f =galactofuranose Gal p =galactopyranose (in α and β form).
Claim 4
Dependent Claim 35 words
Polysaccharide of molecular weight of about 60,000±10,000 daltons and having a polymeric structure comprising of about 40±7 repeating units of the monomer: ##STR3## where Gal f =galactofuranose Gal p =galactopyranose (in α and β form).
Claim 5
Dependent Claim 20 words
Polysaccharide as claimed in claim 2, in which the monomer is represented by the structural formula: ##STR4## where x=1; y=6.
Claim 6
Dependent Claim 21 words
Pharmaceutical composition useful as an immunostimulant comprising an effective amount of the polysaccharide of claim 1, together with pharmaceutically acceptable carrier.
Claim 7
Dependent Claim 11 words
The composition of claim 4, which further contains a vaccinating agent.

References Cited (Backward Citations)

EP0049182A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-03-29 1991-09-28 1992-03-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-03-29 1995-09-28 1996-03-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-03-29 1999-09-28 2000-03-29 $7700.00 Window Closed / Lapsed

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