Patents by Inventor Hanghua Pan

Hanghua Pan 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).

  • Copolymer and water- and oil-repellent agent containing the same
    Patent number: 5876617
    Abstract: A copolymer, which comprises about 30 to about 70% by weight of perfluoroalkylethyl (meth)acrylate represented by the following general formula:CH.sub.2 .dbd.CRCOOCH.sub.2 CH.sub.2 Rfwhere R is a hydrogen atom or a methyl group, and Rf is a perfluoroalkyl group having 4 to 16 carbon atoms; about 25 to about 60% by weight of stearyl (meth)acrylate; about 1 to about 15% by weight of 2-chloroethyl vinyl ether; and (d) about 0.1 to about 5% by weight of N-methylol (meth)acrylamide, sum total being 100% by weight, is novel and can form a water- and oil-repellent agent having a good resistance to yellowing of textiles, etc. and capable of shorter curing and low temperature curing.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: March 2, 1999
    Assignee: Nippon Mektron, Limited
    Inventors: Masato Sato, Hanghua Pan, Koichi Takahashi, Tetsuya Mizuno