Patents by Inventor Joseph La Mar Zollinger

Joseph La Mar Zollinger 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).

  • Poly(perfluoroalkylene oxide) derivatives
    Patent number: 4094911
    Abstract: Polyfunctional poly(perfluoroalkylene oxide) compounds, such as compounds of the formulaA--CF.sub.2 O(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n CF.sub.2 --A'where A and A' are reactive radicals containing a polymerizable functional group, e.g., hydroxyl, are provided, such compounds being useful as monomers in the preparation of polymeric materials, e.g., polyurethanes, possessing unusual low temperature stability and resistance to solvents.
    Type: Grant
    Filed: June 25, 1973
    Date of Patent: June 13, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ronald A. Mitsch, Joseph La Mar Zollinger
  • Poly(perfluoroalkylene oxide) derivatives
    Patent number: 4085137
    Abstract: Polyfunctional poly(perfluoroalkylene oxide) compounds, such as compounds of the formulaA--CF.sub.2 O(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n CF.sub.2 --A'where A and A' are reactive radicals containing a polymerizable functional group, e.g., hydroxyl, are provided, such compounds being useful as monomers in the preparation of polymeric materials, e.g., polyurethanes, possessing unusual low temperature stability and resistance to solvents.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: April 18, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ronald A. Mitsch, Joseph La Mar Zollinger
  • Polyurethanes containing poly(perfluoroalkylene oxides) units
    Patent number: 3972856
    Abstract: Low temperature flexible fluorine-containing, elastomeric polyurethane containing poly(perfluoroalkylene oxide) units, --CF.sub.2 O--(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n --CF.sub.2 --, are prepared, for example, by reacting hydroxy-terminated poly(perfluoroalkylene oxide) with polyisocyanate, said polyurethane being useful in the shape of a seal or gasket or useful as a structural adhesive or a solid propellant binder.
    Type: Grant
    Filed: October 3, 1973
    Date of Patent: August 3, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ronald A. Mitsch, Joseph La Mar Zollinger