Patents by Inventor Charles J. Lind

Charles J. Lind 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 high purity tetrahydrocarbylammonium tetrahydridoborates
    Patent number: 4216168
    Abstract: High purity tetrahydrocarbylammonium tetrahydridoborates are prepared under anhydrous conditions by reacting tetrahydrocarbylammonium salts with at least 8% molar excess of an alkali metal hydroxide in the presence of ethanol to produce the corresponding tetrahydrocarbylammonium hydroxides and alkali metal salts, removing the alkali metal salts and adding an alkali metal borohydride to the solution to produce the corresponding tetrahydrocarbylammonium tetrahydridoborates and alkali metal hydroxides.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: August 5, 1980
    Assignee: Allied Chemical Corporation
    Inventors: Francis E. Evans, Charles J. Lind, Martin A. Robinson
  • Process for producing calcium fluoborate
    Patent number: 4157377
    Abstract: Dry calcium fluoborate suitable for use in the manufacture of boron trifluoride is produced by reacting, in an aqueous medium, calcium fluoride, hydrofluoric acid and boric acid followed by removing water from the calcium fluoborate reaction product by purging the reaction product with a dry inert gas such as nitrogen, at a temperature between about 140.degree. to 160.degree. C.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: June 5, 1979
    Assignee: Allied Chemical Corporation
    Inventors: Francis E. Evans, Charles J. Lind, Richard E. Eibeck, Martin A. Robinson