Patents Assigned to Eugene Tech International, Inc.
  • Process for preparing hepatitis B surface antigen containing particles in novel forms which are highly immunogenic
    Patent number: 4695454
    Abstract: There is disclosed a process for producing a proteinaceous mass containing particles of HBsAg in a morphological form not found in nature while inactivating any live virus contained therein. The process comprises subjecting a concentrated mass thereof free of protein diluent or a stabilizer to a heat inactivation by heating the same while in a concentration of at least 1 mg/ml at a temperature of 101.degree. to 105.degree. C. for 1 to 5 minutes and thereafter cooling the so heated particles.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: September 22, 1987
    Assignees: New York Blood Center, Inc., Eugene Tech International, Inc.
    Inventors: Alfred M. Prince, Kwang S. Kim