Patents by Inventor David E. M. Wotton

David E. M. Wotton 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).

  • Emulsions of perfluorocarbons in aqueous media
    Patent number: 4859363
    Abstract: Increased stability is conferred on oil-in-water emulsions of perfluorocarbons by addition of a minor (0.1-5% w/v) amount of a fluorinated compound of higher boiling point than the perfluorocarbon being emulsified. The added fluorinated compound is preferably a perfluorinated saturated polycyclic hydrocarbon. The most preferred additive is perfluoroperhydrofluoranthene.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: August 22, 1989
    Assignee: I.S.C. Chemicals Limited
    Inventors: Stanley S. Davis, David E. M. Wotton
  • Lean testing of electrical or electrical components
    Patent number: 4736621
    Abstract: A method of leak testing electrical or electronic components, by immersion in an inert liquid at a temperature above 100.degree. C., to detect any bubbles arising from the component, after which the component is removed from the liquid and drained, wherein according to the invention the liquid in which the component to be tested is immersed comprises predominantly perfluoroperhydrofluorene, C.sub.13 F.sub.22.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: April 12, 1988
    Assignee: I.S.C. Chemicals Limited, Borax House
    Inventors: David S. L. Slinn, David E. M. Wotton, Colin R. Sargent
  • Perfluoro-1-azabicyclo(5,3,0)decane compounds useful as blood substitutes
    Patent number: 4562183
    Abstract: Novel perfluorinated heterocyclic compounds have an azabicyclodecane structure with fused 5- and 7-membered rings incorporating a bridgehead nitrogen atom. They are prepared by cobalt (III) fluoride fluorination of quinolines or alkyl quinolines and are useful, when emulsified in aqueous media, as blood substitutes or organ perfusates, prior to transplant.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: December 31, 1985
    Assignee: I.S.C. Chemicals Limited
    Inventors: John C. Tatlow, Raymond G. Plevey, David E. M. Wotton, Colin R. Sargent
  • Vapor phase soldering using perfluorotetradecahydrophenanthrene (C.sub.14 F.sub.24)
    Patent number: 4549686
    Abstract: A method of soldering wherein a component or components to be soldered, such as a printed circuit board and soldered preforms, are immersed in a vapor bath to melt the solder, following which the components are withdrawn from the vapor bath. In the method according to the invention, the vapor bath is composed predominantly of perfluorotetradecahydrophenanthrene (C.sub.14 F.sub.24).
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: October 29, 1985
    Assignee: I.S.C. Chemicals Limited
    Inventors: Colin R. Sargent, Keith Brierley, David E. M. Wotton, Paul L. Coe