Patents by Inventor Walter E. Manger

Walter E. Manger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for converting lipid-containing bacterial capsular polysaccharide into lipid-free polysaccharide
    Patent number: 5314811
    Abstract: A process for converting lipid-containing bacterial capsular polysaccharide, such as lipo-polyribosyl ribitol phosphate, lipo-PRP, into lipid-free, endotoxin-free polysaccharide, such as polyribosyl ribitol phosphate, PRP, by solubilizing polysaccharide-containing powder derived from culture media of bacteria, such as Haemophilus influenzae type b, cleaving covalently bound fatty acids from the polysaccharide, and removing the lipids, and endotoxin.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: May 24, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Ann L. Lee, Mark S. Rienstra, Walter E. Manger, Robert D. Sitrin