Patents by Inventor Noriko Yoshimatsu

Noriko Yoshimatsu 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).

  • Water-absorptive soft ocular lens material, water-absorptive soft ocular lens shaped product made thereof, water-absorptive soft ocular lens made thereof and process for its production
    Patent number: 5817726
    Abstract: A substantially non-crosslinked water-absorptive soft ocular lens material obtained by polymerizing polymerizable components comprising a methoxysilane compound (A) of the formula (I):X--Z--Si(OCH.sub.3).sub.n (R.sup.1).sub.3-n (I)wherein X is a (meth)acryloyloxy group, a vinyl group, a group of the formula ##STR1## or an allyl group, Z is a direct bond or a C.sub.1-3 alkylene group, R.sup.1 is a C.sub.1-6 alkyl group, and n is an integer of from 1 to 3, and a hydrophilic monomer (B) which has an unsaturated double bond copolymerizable with the methoxysilane compound (A) and which undergoes no crosslinking reaction, in an amount of at least 45 mol %.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: October 6, 1998
    Assignee: Menicon Co., Ltd.
    Inventors: Kazuhiko Nakada, Noriko Yoshimatsu, Shoji Ichinohe, Toshio Yamazaki
  • Low water-absorptive ocular lens material, low water-absorptive ocular lens shaped product made thereof, low water-absorptive ocular lens made thereof and process for its production
    Patent number: 5670594
    Abstract: A substantially non-crosslinked low water-absorptive ocular lens material obtained by polymerizing polymerizable components comprising a methoxysilane compound (A) of the formula (I):X--Z--Si(OCH.sub.3).sub.n (R.sup.1).sub.3-n (I)wherein X is a (meth)acryloyloxy group, a vinyl group, a group of the formula H.sub.2 C.dbd.CH ##STR1## or an allyl group, Z is a direct bond or a C.sub.1-3 alkylene group, R.sup.1 is a C.sub.1-6 alkyl group, and n is an integer of from 1 to 3, and a hydrophobic silicon-containing monomer (B) which is copolymerizable with the methoxysilane compound (A) and which undergoes no crosslinking reaction.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: September 23, 1997
    Assignee: Menicon Co., Ltd.
    Inventors: Kazuhiko Nakada, Noriko Yoshimatsu, Shoji Ichinohe, Toshio Yamazaki