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    • 3. 发明授权
    • Pneumatic tire
    • 气动轮胎
    • US5105864A
    • 1992-04-21
    • US564245
    • 1990-08-08
    • Susumu WatanabeKiyoshi Tomioka
    • Susumu WatanabeKiyoshi Tomioka
    • B60C11/00B60C11/03B60C11/04B60C11/11
    • B60C11/0332B60C11/00B60C11/0302B60C11/0306
    • This invention relates to a pneumatic tire equipped on its tire tread surface with a plurality of main grooves extending in a tire circumferential direction and transverse grooves extending from the center portion to shoulder portions while crossing the main grooves. The radius r of an approximate arc approximating to the ground contact front edge line of the tire tread surface has a relation r.ltoreq.2w with the ground contact width w, the direction of the main grooves has an angle within a range of .+-.10.degree. with respect to the normal of the approximate arc and the main grooves are disposed also in the shoulder portions outside 40 % from the center of the tire tread surface besides the center portion.
    • 本发明涉及一种装配在轮胎胎面上的充气轮胎,其具有沿着轮胎周向延伸的多个主槽,并且在与主槽交叉的同时从中心部向肩部延伸的横向槽。 近似于轮胎胎面表面的接地前缘线的近似弧的半径r具有接地宽度w的关系r 1 = 2w,主槽的方向具有在+ 相对于大致圆弧的法线为-10°,除了中心部分之外,主凹槽还布置在距轮胎胎面表面的中心40%以外的肩部中。
    • 5. 发明授权
    • Method of designing integrated circuit and apparatus for designing integrated circuit
    • US06993728B2
    • 2006-01-31
    • US10323735
    • 2002-12-20
    • Susumu Watanabe
    • Susumu Watanabe
    • G06F17/50
    • G06F17/5068
    • An integrated circuit design method and an integrated circuit design apparatus, for increasing an efficiency of parallel processing of LSI design layout data while retaining a hierarchical structure by use of a computer capable of processing the data in parallel, take a first construction of making an internal cell composed of divided cells obtained by dividing a design cell specified by design cell data among pieces of integrated circuit design layout data on the basis of a cell division judging criterion, and of non-divided design cells other than the divided cells, then creating a plurality of unit groups of which data quantities are substantially equal to each other by combining the internal cells, and executing hierarchical parallel processing of the data contained in the internal cell per unit group, and take a second construction of restoring a non-overlapped array data region left by excluding a data region having overlapped data from an array data region containing array data among pieces of integrated circuit design layout data, with a combination of a plurality of or a single piece of array cell or unit cell.