Patents by Inventor Wolf R. Vieth

Wolf R. Vieth 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).

  • Enzymatically active protein-enzyme complex membranes
    Patent number: 4601981
    Abstract: Enzymatically active protein-enzyme complex membranes are prepared by treating a swollen protein membrane with an aqueous solution of a compatible active enzyme. These membranes are used to effect enzymatic reactions such as hydrolyzing starch, sucrose, urea or cellulose, lysis of cells or isomerizing D-glucose.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: July 22, 1986
    Assignee: Research Corporation
    Inventors: Wolf R. Vieth, Shaw S. Wang, Seymour G. Gilbert
  • Saturated preform and method for preparation thereof
    Patent number: 4435453
    Abstract: Presaturated plastic preforms suitable for use in preparing molecularly oriented hollow articles from thermoplastic materials are obtained by adding controlled amounts of a saturant gas, under pressure, into a molten polymer stream residing in the screw channels of a screw plasticizer in a preform injection molding machine. The polymer so treated is then injected into cooled preform molds to obtain the desired article.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: March 6, 1984
    Inventors: Wolf R. Vieth, Leonard B. Ryder
  • Saturated preform and method for preparation thereof
    Patent number: 4426427
    Abstract: Presaturated plastic preforms suitable for use in preparing molecularly oriented hollow articles from thermoplastic materials are obtained by adding controlled amounts of a saturant gas, under pressure, into a molten polymer stream residing in the screw channels of a screw plasticizer in a preform injection molding machine. The polymer so treated is then injected into cooled preform molds to obtain the desired article.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: January 17, 1984
    Inventors: Wolf R. Vieth, Leonard B. Ryder
  • Protein-enzyme complex membranes
    Patent number: 3977941
    Abstract: Enzymatically active protein-enzyme complex membranes are prepared by treating a swollen protein membrane with an aqueous solution of a compatible active enzyme. These membranes are used to effect enzymatic reactions.
    Type: Grant
    Filed: February 4, 1974
    Date of Patent: August 31, 1976
    Assignee: Research Corporation
    Inventors: Wolf R. Vieth, Shaw S. Wang, Seymour G. Gilbert
  • Preparation of protein membranes containing microbial cells
    Patent number: 3972776
    Abstract: Enzymatically active Protein-whole microbial cell complex membranes suitable for effecting enzymatic reactions are prepared by forming a dispersion containing synthetic polypeptide or natural protein macromolecules and whole microbial cells, casting a membrane from the dispersion and drying the membrane. In an alternative embodiment, the membranes are formed by electro-codeposition from a dispersion containing the macromolecules and cells. It is desirable to pre-treat the microbial cells to destroy proteolytic activity of the cells to prevent the cells from autolyzing and from destroying the membrane.
    Type: Grant
    Filed: February 26, 1973
    Date of Patent: August 3, 1976
    Assignee: Research Corporation
    Inventors: Wolf R. Vieth, Shaw S. Wang, Rakesh Saini