Patents by Inventor Philippe Colombe

Philippe Colombe 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 producing solutions of alkali metal silicate in a static reactor
    Patent number: 4520001
    Abstract: The process for producing a clear solution of alkali metal silicate having an SiO.sub.2 /alkali metal oxide weight ratio of 2.5 or less which comprises passing an aqueous solution of an alkali metal hydroxide through a bed of crystallized silica having an average particle size of between about 0.1 mm and 2 mm formed in the bottom of a vertical tubular reactor without mechanical agitation, said silica and alkali metal hydroxide being fed from the top of the reactor, and recovering the resulting clear solution of alkali metal silicate from the bottom of the reactor.
    Type: Grant
    Filed: April 6, 1983
    Date of Patent: May 28, 1985
    Inventors: Jean Metzger, Henri Lecouls, Philippe Colombe, Jean Wojcik