Patents by Inventor Jozsef Zsidai

Jozsef Zsidai 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).

  • Process for the preparation of lyophilized, adsorbed polyvalent vaccines
    Patent number: 4578270
    Abstract: The invention relates to the preparation of lyophilized, absorbed polyvalent vaccines. According to the invention tetanus, diphtheria, pertussis and optionally typhus antigens concentrated to 5 to 15 doses/3 ml are adsorbed at a pH value of 3 to 6 to an insoluble carrier concentrated in the same way as the antigens, then the pH of the mixture is adjusted to a value of 5 to 6 and lyophilized together with a protective material commonly used in lyophilizing processes. Before administration the lyophilized vaccine is diluted to the concentration required by a physiological saline buffered to a pH value of 6.8 to 7 by a phosphate solution.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: March 25, 1986
    Assignee: Human Oltoanyagtermelo Es Kutato Intezet
    Inventors: Zoltan Csizer, Karoly Sikos, Laszlo Bacskai, Istvan Joo, Eleonora Niedermayer, Lajos Rethy, Jozsef Zsidai