Patents by Inventor Lutz R. Weinhold

Lutz R. Weinhold 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).

  • Soluble tape and film
    Patent number: 4917926
    Abstract: A pressure-sensitive adhesive tape for masking selected areas of an article such as a printed circuit board during high temperature operations such as wave soldering comprises a polymeric film coated with a layer of pressure-sensitive adhesive, both film and adhesive being resistant to temperatures up to 250.degree. C. for up to 5 seconds and being soluble in a fluorocarbon solvent such as a trichlorotrifluoroethane solvent. More particularly the film and adhesive are resistant to temperatures up to 260.degree. C. for up to 25 seconds.The polymeric film, which is a novel self-supporting film, may suitably comprise a polymethacrylate other than poly(methyl methacrylate) e.g. poly(butyl methacrylate), or ethyl cellulose or polyvinylpyrrolidone.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: April 17, 1990
    Assignee: Waterford Research & Development Limited
    Inventors: Lutz R. Weinhold, John D. McDonough