Patents by Inventor Masanori Daicho

Masanori Daicho 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).

  • Process for producing cyanopsia-correctable intraocular lens
    Patent number: 5374663
    Abstract: The present invention relates to a process for producing a cyanopsia-correctable intraocular lens, which process is characterized by, in polymerizing a monomer capable of forming a transparent lens material upon polymerization to obtain an intraocular lens, adding, as an essential component, at least one member of yellow, yellowish brown and orange colorants and, as an optional components, an U.V. absorber and a crosslinking monomer. The intraocular lens obtained by the present invention has a light absorption characteristic close to that of human crystalline lens and is effective for correction of cyanopsia.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: December 20, 1994
    Assignee: Hoya Corporation
    Inventors: Masanori Daicho, Yuuichi Yokoyama, Makoto Tsuchiya