Patents by Inventor Wakasugi Kazuyuki

Wakasugi Kazuyuki 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).

  • Cycloalkene compounds useful in recording materials
    Patent number: 4987262
    Abstract: A novel cycloalkene compound represented by the following general formula [1]: ##STR1## wherein each of R.sup.1 and R.sup.2 is a C.sub.1 -C.sub.4 alkyl group, R.sup.3 is a hydrogen atom , or a C.sub.1 -C.sub.4 alkyl group, R.sup.4, together with R.sup.5, forms --CH.sub.2 --CH.sub.2 --or --CH.sub.2 --CH.sub.2 --CH.sub.2 --, and R.sup.6 is a C.sub.1 -C.sub.4 alkyl group.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: January 22, 1991
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Wakasugi Kazuyuki, Katsumasa Kikkawa, Masahiko Yamaguchi, Katsuichi Motohashi