Patents by Inventor Kazuo Tao

Kazuo Tao 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).

  • Resist printing method
    Patent number: 4215988
    Abstract: This invention relates to a resist printing method utilizing of different reactivities of reactive dyestuffs. The development or fixation of a vinyl sulfone type reactive dyestuff in a fibrous material is prevented with the use of a resist printing paste comprising at least one compound which have the following general formula: ##STR1## wherein R.sub.1 is hydrogen, an alkyl group or an aryl group, R.sub.2 is an alkyl group, an aryl group, ##STR2## and X is an alkali metal or an amine.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: August 5, 1980
    Assignee: Meisei Chemical Works, Ltd.
    Inventors: Kazuo Kohama, Akira Hashimoto, Junichi Nakamura, Kazuo Tao