Patents by Inventor Stephen Gayst

Stephen Gayst 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 of controlling insects and parasites with an aqueous localized pour-on formulation
    Patent number: 4607050
    Abstract: An aqueous pour-on formulation for localized external application to animals comprises an aqueous carrier, an effective amount of a water-insoluble anti-parasitic agent suspended or dispersed in the aqueous carrier, and a colored dye to enable the application to be observed. Preferred water-insoluble agents include pyrethroids, organophosphorus compounds, formamidines, thiazoles and avermectins. Use of an aqueous system avoids skin reactions sometimes found when non-aqueous solvent systems are used.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: August 19, 1986
    Assignee: Wellcome Australia Limited
    Inventors: Peter J. Kieran, Robert B. Townsend, Ronald J. Hackney, Stephen Gayst, Michael J. Maguire
  • Pharmaceutical formulation of guar gum
    Patent number: 4315918
    Abstract: The gellation of polysaccharide gums such as guar or locust bean gum is inhibited by gelatin hydrolysates, at alkaline pH. Formulations of gum, gelatin hydrolysate and alkaliniser are reconstituted by shaking with water, and are easily inbibed. The inhibition is reversed by pH change in the stomach allowing gellation to occur. The formulation is useful in treatment of hypercholesteraemia, gastric disorders and as an adjunct to insulin therapy.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: February 16, 1982
    Inventors: Stephen Gayst, Michael J. Maguire
  • Phase transition detector
    Patent number: 4083224
    Abstract: A dewpoint detector has a mirror which clouds over when condensation forms on it and this is detected by attenuation of a light beam reflected from the mirror. The precise temperature of the mirror is ascertained by a thermister which is buried just beneath the mirror surface and has its leads bonded to the mirror which provides a heat sink. Cooling of the mirror is effected by Peltier cooling. The detector can be used to determine freezing points accurately, as well as dewpoints.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: April 11, 1978
    Assignee: The University of Sydney
    Inventor: Stephen Gayst