Patents by Inventor John A. Dubczak

John A. Dubczak 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).

  • HYBRID AMEBOCYTE LYSATE AND USES THEREOF
    Publication number: 20240125789
    Abstract: The invention relates generally to hybrid amebocyte lysate compositions (including both native and recombinant components) and their use in detecting and/or quantifying endotoxin in a sample.
    Type: Application
    Filed: February 11, 2022
    Publication date: April 18, 2024
    Applicant: Charles River Laboratories, Inc.
    Inventors: Norman R. Wainwright, Masakazu Tsuchiya, John Dubczak, Foster T. Jordan
  • HYBRID AMEBOCYTE LYSATE AND USES THEREOF
    Publication number: 20230258647
    Abstract: The invention relates generally to hybrid amebocyte lysate compositions (including both native and recombinant components) and their use in detecting and/or quantifying endotoxin in a sample.
    Type: Application
    Filed: February 11, 2022
    Publication date: August 17, 2023
    Inventors: Norman R. Wainwright, Masakazu Tsuchiya, John Dubczak, Foster T. Jordan
  • Method for determining endotoxin concentration
    Patent number: 4221865
    Abstract: Improvements in the sensitivity and reproducibility of nephelometric endotoxin determinations using endotoxin-activated enzyme from Limulus amebocyte lysate are achieved by contacting endotoxin-coagulated lysate with an ionic surface active suspending agent, generally a mixture of detergent and suspending agent. Instrumentation improvements further enhance results.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: September 9, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: John A. Dubczak, Marlys E. Weary