Patents by Inventor Gustaf Bertil Aberg

Gustaf Bertil Aberg 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).

  • Polypeptides as vitro active cell growth enhancing factors and methods of use
    Patent number: 3953290
    Abstract: Disclosed are in vitro active cell growth factors that stimulate deoxyribonucleic acid synthesis in the cells, are polypeptide in chemical structure, having a molecular weight range of from 4,000 to 6,000 and an isoelectric range of from pH 4.3 to 5.3, are inert to about 72% aqueous ethanol containing by volume about 0.047% of concentrated hydrochloric acid, soluble in and precipitated from such acid aqueous ethanol solution by admixing in it 3.5 times its volume of a mixture of five parts of acetone with three parts of ethanol, and are soluble in about twice their weight of 20% formic acid.
    Type: Grant
    Filed: April 30, 1973
    Date of Patent: April 27, 1976
    Assignee: AB Kabi
    Inventors: Knut Oivind Uthne, Gustaf Bertil Aberg