Patents by Inventor Fredrik Wilhelm Anton Kurz

Fredrik Wilhelm Anton Kurz 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).

  • Method for strengthening vitreous products and composition boards
    Patent number: 4087285
    Abstract: A method for the strengthening of glasses, glazes, cement, gypsum board, wood fiber board, mineral fiber board, lime or gypsum by adding fly or filter dust to the starting material after which the mixture is heated or not heated depending upon the product being manufactured. For glasses, glazes and other vitreous products (besides porous ceramic products) and cement the starting material is heated to above 1000.degree. C. For gas concrete, gypsum board, wood fiber board and mineral fiber board the starting material is heated to from 100.degree.-1000.degree. C. For cement, lime and gypsum it is possible that no heating take place to the starting material.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: May 2, 1978
    Inventor: Fredrik Wilhelm Anton Kurz