Patents by Inventor John G. Keil

John G. Keil 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 1-N-?.omega.-amino-.alpha.-hydroxyalkanoyl!kanamycin polysilylates and products
    Patent number: 4424343
    Abstract: An improved process for the preparation of 1-N-?.omega.-amino-.alpha.-hydroxyalkanoyl!kanamycins comprises acylating a polysilylated kanamycin in a substantially anhydrous organic solvent with an acylating derivative of an .omega.-amino-.alpha.-hydroxyalkanoic acid.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: January 3, 1984
    Assignee: Bristol Myers Company
    Inventors: Martin J. Cron, John G. Keil, Jeng S. Lin, Mariano V. Ruggeri, Derek Walker
  • Preparation of 1-N-[.omega.-amino-.alpha.-hydroxyalkanoyl]aminoglycoside polysilylated antibiotics and products obtained therefrom
    Patent number: 4347354
    Abstract: An improved process for the preparation of 1-N-[.omega.-amino-.alpha.-hydroxyalkanoyl]aminoglycoside antibiotics comprises acylating a polysilylated aminoglycoside antibiotic in a substantially anhydrous organic solvent with an acylating derivative of an .omega.-amino-.alpha.-hydroxyalkanoic acid.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: August 31, 1982
    Assignee: Bristol-Myers Company
    Inventors: Martin J. Cron, John G. Keil, Jeng S. Lin, Mariano Ruggeri, Derek Walker
  • Method of fabricating multicolor light displays utilizing etch and refill techniques
    Patent number: 4012243
    Abstract: There is disclosed a method of manufacturing a multicolor monolithic light display utilizing the etching of multiple channels in a substrate and selectively refilling said channels with single crystal material, each channel being filled with material capable of emitting light of a given wavelength, depending on the dopant or the type of material deposited. There is also disclosed a multicolor or monolithic light display comprising at least a pair of matrices of light emitting diodes in an integral structure which pair of matrices are alternatively or simultaneously, scannable to produce a display in a first and a second color. Each matrix includes a plurality of light emitting diodes, preferably gallium phosphide, which, by proper doping, can be made to emit either a red or a green wavelength of light.
    Type: Grant
    Filed: September 19, 1973
    Date of Patent: March 15, 1977
    Assignee: Motorola, Inc.
    Inventors: John G. Keil, Michael G. Coleman