Patents by Inventor Zvi Rigbi

Zvi Rigbi 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).

  • Formation of spheres of thermoplastic materials, especially glass
    Patent number: 4101301
    Abstract: A method and apparatus for manufacturing spheres from molten material, such as glass, by allowing drops of the molten material to pass from one end to another of a column containing a liquid, such as a mixture of salts, the temperature of the column being so graduated that the drops harden during passage through the column. The column can be bifurcated at the lower end into legs provided with cooling cuffs for alternate use.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: July 18, 1978
    Assignee: Technion Research and Development Foundation, Ltd.
    Inventor: Zvi Rigbi