Patents by Inventor Robert Peiffer

Robert Peiffer 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 the purification of proteins using acidic polysaccharide gels
    Patent number: 4667018
    Abstract: A process for the purification of proteins from a fluid medium wherein said proteins have an isoelectric pH higher than the pH of said fluid medium, said process comprising passing the liquid medium over acidic polysaccharide gel particles of at least 0.5 mm in the shortest dimension, and recovering the desired proteins from the gel particles by elution with an aqueous salt solution having ions concentration of at least 5 grams per liter.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: May 19, 1987
    Assignee: Oleofins, S.A.
    Inventors: Jean-Paul Prieels, Robert Peiffer