Patents by Inventor Ayako Kojima

Ayako Kojima 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).

  • Method for enzymatic determination of substrate after enzymatically removing galactose
    Patent number: 5426033
    Abstract: A method for quantitating accurately 1,5-anhydroglucitol, fructose or amylase in a sample that contains galactose using an enzymatic determination involves a pretreatment which removes galactose from the sample by an enzyme reaction in which galactose is a substrate.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: June 20, 1995
    Assignee: Kyowa Medex Co., Ltd.
    Inventors: Ayako Kojima, Norihito Aoyama, Akira Miike
  • Compact zoom lens system
    Patent number: 5086356
    Abstract: A compact zoom lens system having from the object side to the image side a first lens unit of positive refractive power, a second lens unit of negative refractive power with a first variable air space formed between the first and second lens units, a third lens unit of positive refractive power and a fourth lens unit of negative refractive power with a second variable air space formed between the third lens unit and the fourth lens unit. The first lens unit, the fourth lens unit and at least one of the second and third lens units are shiftable from the image side to the object side so that the first variable air space increases and the second variable air space decreases in the zooming operation from the shortest focal length to the longest focal length. The third lens unit and/or the fourth lens unit can have an aspherical surface.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: February 4, 1992
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Ayako Kojima, Hisayuki Masumoto
  • Compact zoom lens system with a high zoom ratio
    Patent number: 4983027
    Abstract: A compact zoom lens system with a high zoom ratio is provided which comprises from the object side to the image side, a first lens unit of a positive refractive power, a second lens unit of a positive refractive power with a first variable air space formed between the first and second lens units, and a third lens unit of a negative refractive power, wherein the first lens unit and the third lens units are shiftable from the image side to the object side and the second lens unit is shiftable so that the first variable air space increases and the second variable air space decreses in the zooming operation from the shortest focal length to the longest focal length, wherein the second or third lens units includes at least an aspherical surface, and wherein the second or third lens units are shiftable in the focusing operation. Further, a diaphragm is located at the image side or the object side of the second lens element.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: January 8, 1991
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Ayako Kojima, Hisayuki Masumoto