Patents by Inventor Shingo Nonohara

Shingo Nonohara 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).

  • Patent number: 6087058
    Abstract: A toner for electrophotography including a binder resin and a colorant, in which the binder resin includes as a main component a thermoplastic resin, which is a linear polyester prepared by using upon polymerization in an amount of 20 mol % or more in an entire alcohol component at least one of the following alcohol components (A) a bisphenol A having polyoxypropylene group containing 90% or more of the compound represented by the general formula (I): ##STR1## wherein each of m and n is 0 to 2, m+n being 2.0; and (B) a bisphenol A having polyoxyethylene group containing 88% or more of the compound represented by the general formula (II): ##STR2## wherein each of p and q is 0 to 2, p+q being 2.0.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: July 11, 2000
    Assignee: Kao Corporation
    Inventors: Tetsuhiro Semura, Yoshihiro Ueno, Shingo Nonohara