Patents by Inventor Wilhelm Joch

Wilhelm Joch 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 preparation of orthosilicic acid tetraalkyl esters
    Patent number: 4224234
    Abstract: An improvement in the preparation of orthosilicic acid tetraalkyl esters by reaction of metallic silicon with alcohol in the presence of alkali alcoholate is disclosed, the improvement residing in carrying out the reaction in the co-presence of an ether alcohol or alkanolamine as cocatalyst.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: September 23, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Wilhelm Flick, Hermann Richtzenhain, Volker Hunger, Wilhelm Joch
  • Process for the preparation of orthosilicic acid tetraalkoxyalkyl esters
    Patent number: 4197252
    Abstract: A process for preparing an orthosilicic acid tetraester of a monoalkyl ether of an aliphatic glycol having 2 to 6 carbon atoms which comprises contacting silicon, iron silicide or ferrosilicon with a monoalkyl ether of an aliphatic glycol having 2 to 6 carbon atoms in the aliphatic chain in the presence of the corresponding orthosilicic acid tetraalkoxy alkyl ether at a temperature between 125 and 250.degree. C.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: April 8, 1980
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Wilhelm Joch, Arnold Lenz, Walter Rogler
  • Production of sodium aluminum hydride
    Patent number: 3959454
    Abstract: In the production of sodium aluminum hydride by reaction of an aluminum chloride etherate with sodium hydride in an inert liquid dispersing agent, the improvement which comprises using as said sodium hydride reagent coarse-grained sodium hydride which is first ground in said dispersing agent to a particle size less than about 12 microns; preferably the inert dispersible agent is tetrahydrofurane or a lower alkyl ether of a lower alkylene glycol, whereupon the resulting sodium aluminum hydride dissolves in the reaction medium.
    Type: Grant
    Filed: March 18, 1971
    Date of Patent: May 25, 1976
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Walter Rogler, Otto Bleh, Wilhelm Joch