Patents by Inventor Roy A. Machlowitz

Roy A. Machlowitz 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).

  • Influenza vaccine
    Patent number: 4431633
    Abstract: Influenza virus is extracted with a mixture of ether and ethanol, the aqueous and organic phases are separated and residual ether removed from the virus suspension under reduced pressure. The resulting product is useful as an influenza vaccine.
    Type: Grant
    Filed: April 27, 1982
    Date of Patent: February 14, 1984
    Assignee: Merck & Co., Inc.
    Inventors: Roy A. Machlowitz, Alan C. Herman
  • Macroscopic method for determining cytopathic effects in viral assay
    Patent number: 4329424
    Abstract: Semi-automated assays for viral infectivity and an assay for serum neutralizing antibody content are based on staining the cells and macroscopic reading of the cytopathic effect.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: May 11, 1982
    Assignee: Merck & Co., Inc.
    Inventors: Roy A. Machlowitz, William J. McAleer, William J. Miller
  • Bacterial or bacterial antibody assay
    Patent number: 4288539
    Abstract: Automated tests to evaluate the antibody titer of a sample by incubating a test sample, bacteria, and complement, and detecting bacterial growth in the incubated mixture, and to identify bacteria and its titer in a sample by incubating a test sample, bacterial antiserum, and complement, and detecting inhibition of bacterial growth in the incubated mixture. The automated tests lend themselves to diagnostic use and may be provided in the form of diagnostic test kits.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: September 8, 1981
    Assignee: Merck & Co., Inc.
    Inventors: William J. McAleer, Henry Z. Markus, Roy A. Machlowitz
  • Separation of trachoma agent from growth medium impurities
    Patent number: 4096035
    Abstract: Trachoma agent is separated from growth medium impurities by density gradient centrifugation in a sodium bromide solution.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: June 20, 1978
    Assignee: Merck & Co., Inc.
    Inventors: Roy A. Machlowitz, Edward H. Wasmuth