Patents by Inventor Akihiko Iinuma

Akihiko Iinuma 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).

  • Intraocular lens having annular groove formed in its peripheral portion
    Patent number: 5266074
    Abstract: An intraocular lens system adapted to be implanted within a generally circular opening in an anterior wall of the capsular bag which normally contains the crystalline lens of an eye. The intraocular lens system includes a lens body having an annular groove which is formed in a peripheral portion thereof in a plane substantially perpendicular to an optical axis of the lens body. The lens body includes an optically effective portion located radially inside the annular groove, and an anterior lens portion and a posterior lens portion located on respective anterior and posterior sides of the annular groove. The intraocular lens system is secured in position within the circular opening such that an annular flap portion of the capsular bag which surrounds the circular opening is accommodated within the annular groove in the lens body.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: November 30, 1993
    Assignee: Menicon Co., Ltd.
    Inventors: Okihiro Nishi, Yuji Sakka, Yoshiharu Yamada, Akihiko Iinuma