Patents by Inventor Jerzy W. Zarzycki

Jerzy W. Zarzycki 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).

  • Preparation of monolithic silica aerogels, the aerogels thus obtained and their use for the preparation of silica glass articles and of heat-insulating materials
    Patent number: 4432956
    Abstract: The invention relates to a process for the preparation of monolithic silica aerogels by drying silica gels under hypercritical conditions, which is characterized by the absence of washing of the silica gel, a high heating rate in the autoclave and purging of the autoclave after substantial removal of the solvent. Other preferred conditions are the use of an amount of water not exceeding 1.5 times the stoichiometric amount for the hydrolysis, hypercritical conditions corresponding to a temperature of 265.degree.-275.degree. C. and to a pressure of 150-200 bars, and so on. Use of the aerogels for the preparation of silica glass bodies or articles and of heat-insulating materials.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: February 21, 1984
    Assignee: Corning France
    Inventors: Jerzy W. Zarzycki, Michel Prassas, Jean E. H. Phalippou