Patents by Inventor Masanori Yagita

Masanori Yagita 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).

  • Pneumatic tire with tread having circumferential grooves
    Patent number: 7669624
    Abstract: A pneumatic tire includes a tread surface on which a plurality of circumferential groove portions is formed. From among circumferential groove portions, a circumferential groove portion situated closest to a shoulder portion side in a tire width direction has a center of a groove-bottom innermost portion at a portion where a groove width in at least a tire circumferential direction is the narrowest, positioned closer to an equatorial surface in the tire width direction than a center of the groove width. An angle between a virtual extension portion of the tread surface and a groove wall on the equatorial surface side is equal to or less than an angle between the virtual extension portion of the tread surface and a groove wall on the shoulder portion side.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: March 2, 2010
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Masanori Yagita
  • Pneumatic tire
    Publication number: 20060011280
    Abstract: A pneumatic tire includes a tread surface on which a plurality of circumferential groove portions is formed. From among circumferential groove portions, a circumferential groove portion situated closest to a shoulder portion side in a tire width direction has a center of a groove-bottom innermost portion at a portion where a groove width in at least a tire circumferential direction is the narrowest, positioned closer to an equatorial surface in the tire width direction than a center of the groove width. An angle between a virtual extension portion of the tread surface and a groove wall on the equatorial surface side is equal to or less than an angle between the virtual extension portion of the tread surface and a groove wall on the shoulder portion side.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 19, 2006
    Inventor: Masanori Yagita