Patents by Inventor Aoi Nishizawa

Aoi Nishizawa 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: 6391055
    Abstract: An artificial cornea comprising an optical element made of an optically transparent material, having a front surface and a posterior surface, and a skirt provided so as to support with surrounding at least a part of the optical element, characterized in that the skirt is provided with a flange on its side facing the interior of eyes during implantation of the artificial cornea and the flange radially protrudes outward from the skirt. The artificial cornea can be well compatible with ocular tissue, prevent leakage of intraocular aqueous humor and intraocular invasion of bacteria, reduce stimulation on palpebral conjunctiva and further, inhibit progression of the down growth, and which has no possibility of reduction in transparency of the optical element due to the down growth as well as detachment and extrusion from the implanted state.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: May 21, 2002
    Assignee: Menicon Co., Ltd.
    Inventors: Yoshito Ikada, Junichi Ohashi, Naoki Kondo, Aoi Nishizawa, Ichiro Ando