Patents by Inventor John J. Hawkins

John J. Hawkins 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).

  • Lateral spondylolisthesis reduction cage
    Patent number: 11911287
    Abstract: An intervertebral fusion device comprising inferior and superior fusion cage devices that provide an ability to correct spondylolisthesis via in-situ adjustment.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: February 27, 2024
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Michael J. O'Neil, Hassan Serhan, Douglas Raymond, John Riley Hawkins
  • Method of preparing morpholinium phosphates
    Patent number: 4369317
    Abstract: A membrane for use in the determination of calcium ion concentration in an aqueous solution, the membrane being of the type comprising a calcium ion selective component and a carrier material.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 18, 1983
    Assignee: Beckman Instruments, Inc.
    Inventor: John J. Hawkins
  • Diaryl phosphate morpholinium salts
    Patent number: 4338440
    Abstract: A membrane for use in the determination of calcium ion concentration in an aqueous solution, the membrane being of the type comprising a calcium ion selective component and a carrier material.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: July 6, 1982
    Assignee: Beckman Instruments, Inc.
    Inventor: John J. Hawkins
  • Solid state ion selective electrodes
    Patent number: 4276141
    Abstract: A solid state electrode for use in determining ion concentration in an aqueous solution comprising an electrically conductive element; a first lipophilic-hydrophobic (hereinafter referred to as LH) layer in intimate contact with the element; and a second LH layer in intimate contact with the first layer. The first LH layer comprises an adhesive, LH polymer having an intrinsic viscosity of from about 0.4 to about 0.9 ml/g; and an LH plasticizer. The second LH layer comprises a LH polymer having an intrinsic viscosity of from about 1 to about 1.5 ml/g; an LH plasticizer, and an LH ion-selective ligand of the ion to be determined.Preferably, the first LH layer further comprises an LH charge carrier.As used herein, the term "lipophilic-hydrophobic (LH)" denotes an organic solvent soluble-water insoluble substance.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: June 30, 1981
    Assignee: Beckman Instruments, Inc.
    Inventor: John J. Hawkins
  • Calcium ion-selective electrodes and membrane for use therein
    Patent number: 4271002
    Abstract: A membrane for use in the determination of calcium ion concentration in an aqueous solution, the membrane being of the type comprising a calcium ion selective component and a carrier material.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: June 2, 1981
    Assignee: Beckman Instruments, Inc.
    Inventor: John J. Hawkins