Merchant & Gould P.C.
Laminated glass
 The present invention provides a laminated glass. Each single glass sheet has a thickness of 1.5 to 3.2 mm and is subjected to a bending process. At least one of the glass sheets is a semi-tempered glass sheet, which is also called a heat-strengthened glass sheet. The heat-strengthened glass sheet has a plane residual stress distribution where the plane residual stress is a compressive stress at an edge of a peripheral portion of the glass sheet. The plane residual stress changes monotonically from the compressive stress at the edge of the peripheral portion to a tensile stress in a central portion of the glass sheet substantially throughout the peripheral portion of the single glass sheet. 
Nippon Sheet Glass Co., Ltd.
Y C Y C B Y C B
Y10T C03B Y10T C03B B32B Y10T C03B B32B
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Hideo
Yoshizawa