Patents by Inventor John L. Essmyer

John L. Essmyer 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).

  • Patent number: 5622168
    Abstract: A highly conductive hydrophilic gel comprising a uniform aqueous solution of a crosslinked water-soluble polymer, an amount of a water-soluble electrolyte effective to reduce the transverse electrical resistance of said aqueous mixture to an impedance at 60 Hz less than about 1,000 ohm, which hydrophilic gel also contains a humectant in an amount effective to retard the drying of the conductive hydrophilic gel when it is exposed to the atmosphere while being used. A physiological electrode adapted for providing electrical contact with a surface of a sentient creature and comprising a sheet of the conductive viscoelastic hydrophilic gel.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: April 22, 1997
    Assignee: John L. Essmyer
    Inventors: Preston Keusch, John L. Essmyer
  • Patent number: 4777954
    Abstract: A medical electrode adapted for providing electrical contact with a patient's skin and comprising:(a) a conductive member including means for connecting the medical electrode to an external electrical apparatus; and(b) interfacing means comprising a solid sheet of a conductive viscoelastic hydrophilic gel consisting essentially of(i) water;(ii) a water soluble magnesium or calcium salt; and(iii) an amount dispersed uniformly throughout the water of from about 2 to 35 wt % of a cross-linked polyethylene oxide, effective to form with the water a tacky surface viscoelastic adhesive solid;which hydrophilic gel is produced by subjecting a liquid film of an aqueous solution of the water soluble salt and a linear water soluble polyethylene oxide having a weight average molecular weight from about 0.05-10.times.10.sup.6 Daltons to an amount of high energy radiation effective to convert the liquid film to a sheet of adhesive viscoelastic solid.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: October 18, 1988
    Assignee: Nepera Inc.
    Inventors: Preston Keusch, John L. Essmyer
  • Patent number: 4706680
    Abstract: A medical electrode adapted for providing electrical contact with a patient's skin and comprising:(a) a conductive member including means for connecting the medical electrode to an external electrical apparatus; and(b) interfacing means comprising a solid sheet of a conductive viscoelastic hydrophilic gel which is a homogeneous aqueous mixture, substantially free of unbound water, monomers and cross-linking agents, consisting essentially of(i) water;(ii) an amount dissolved in the water of a water soluble electrolyte effective to reduce the transverse electrical resistance of the sheet to an impedance at 60 Hz of less than 1,000 ohms; and(iii) an amount dispersed uniformly throughout the water of from about 2 to 35 wt % of a cross-linked polyethylene oxide, effective to form with the water a tacky surface viscoelastic adhesive solid;which hydrophilic gel is produced by subjecting a liquid film of an aqueous solution having a viscosity of about 2-2,000.times.10.sup.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: November 17, 1987
    Assignee: Nepera Inc.
    Inventors: Preston Keusch, John L. Essmyer
  • Patent number: 4684558
    Abstract: A solid sheet of adhesive hydrophilic gel which is a homogeneous aqueous mixture, substantially free of unbound water, monomers and crosslinking agents, consisting essentially of an amount dispersed uniformly in water of from about 4 to 35 wt % of a crosslinked polyethylene oxide, effective to form with the water a tacky surfaced viscoelastic solid which sheet of hydrophilic gel is produced by subjecting a liquid film of an aqueous solution having a viscosity of about 2-2,000.times.10.sup.3 cps of a linear water soluble polyethylene oxide having a weight average molecular weight from about 0.02-6.times.10.sup.6 Daltons to an amount of high energy radiation effective to convert the liquid film to a sheet of the viscoelastic solid having an adhesive face.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: August 4, 1987
    Assignee: Nepera Inc.
    Inventors: Preston Keusch, John L. Essmyer