Patents by Inventor Kouji Yokoyama

Kouji Yokoyama 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: 6573939
    Abstract: A digital camera having a camera body and a lens assembly within an imaging unit which is rotatably connected to the camera body. Rotation of the imaging unit containing the lens assembly with respect to the position of the camera body causes the flash within the camera body to follow the direction at which the lens assembly is aimed. If the camera has a self-portrait mode in which the lens assembly can be aimed backwards at the user of the camera but the flash cannot be aimed backwards due to constraints of the camera body or if the flash cannot cover the complete angular range of the lens, a mechanism is utilized to couple the movement of the lens and the flash over a limited range of movement of the lens. Springs, concentric gears attached by springs, or a clutch mechanism may be utilized to selectively couple the flash with the lens rotation. By separating the flash from the lens, the red-eye phenomena will be reduced.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: June 3, 2003
    Assignee: Ricoh Company, Ltd.
    Inventor: Kouji Yokoyama
  • Patent number: 6329399
    Abstract: Novel amine derivatives having an excellent antimycotic effect represented by general formula (1) below and salts thereof are provided. [in the formula (1, R1 represents a C1-5 alkyl group which may be halogenated, R2 represents 4-(1,1-dimethylalkyl)benzyl group, 4-(1-methyl-phenylethyl)benzyl group, 1-or 2-naphthylmethyl group, or a hydrocarbon group having 3,3-dimethyl-1-butynyl group or a phenyl group at its terminal and 1 to 3 double bonds; R3 represents oxygen atom or a methylene group which may be substituted by a C1-4 alkyl group; and R4 represents 1-or 2 naphthyl group or a phenyl group which may be substituted.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: December 11, 2001
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Takao Itoh, Takuji Nakashima, Akira Nozawa, Kouji Yokoyama, Hiroyuki Takimoto, Masayuki Yuasa, Yukio Kawazu, Toshimitsu Suzuki, Toshiro Majima