Patents by Inventor James A. Tull

James A. Tull 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).

  • Organic acid activated liquid solder flux
    Patent number: 4278479
    Abstract: An improved organic acid activated liquid solder flux is provided by combining a carboxylic acid derivative of a condensed nuclear hydrocarbon, such as 1-naphthylacetic acid, with a flux base, such as rosin, and a solvent, such as isopropyl alcohol. Application of this mixture to solder joints to be made results in faster solder reflow and easier removal of flux residue than with a flux of substantially the same composition not employing the carboxylic acid. Any residues remaining are non-corrosive.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: July 14, 1981
    Assignee: Hughes Aircraft Company
    Inventors: Edward A. Anderson, Rose M. Rawls, James A. Tull