Patents Examined by K. Frederick Berg
  • 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board and soldered preforms, are immersed in a vapor bath to melt the solder, following which the components are withdrawn from the vapor bath.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