Nitto-denko Corporation

Menicon Co., Ltd.

Yoshinori Yoshida

Kazuhiko Nakada

Yoshio Terada

Makoto Namikawa

Yasushi Inoue

Yoshihiro Hieda

Yuki Sugo

Kunio Nagasaki

Kazumi Higashi

Kiichiro Matsushita

Kohei Yano

Tomohiro Kontani

Daisuke Uenda

Eiichi Imoto

Youhei Maeno

Kouji Akazawa

Yohei Maeno

Jirou Nukaga

Megumi Ashida

Kazuhide Fujita

Takae Shinagawa

To provide a pressure-sensitive adhesive sheet used during processing articles such as semiconductor wafers and laminate sheet used for such a pressure-sensitive adhesive sheet, which does not contaminate or break the semiconductor wafers during the processing and can minimize the curl of the articles due to residual stress of the pressure-sensitive adhesive sheet, a multi-layer sheet includes a composite film containing a urethane polymer and a vinyl-based polymer as effective components and a first film made of a material different from that of the composite film, wherein the urethane polymer is formed from a polyolefin diol and a polyisocyanate. A pressure-sensitive adhesive sheet is obtained by providing a pressure-sensitive adhesive layer on at least one side of the multi-layer sheet.

Multilayer sheet, production method thereof and pressure-sensitive adhesive sheet using the multilayer sheet

To provide a cleaning sheet that can remove foreign matter adhering on a probe needle without wearing the probe needle and that does not allow the foreign matter to re-adhere on the probe needle, the cleaning sheet has a cleaning layer on at least one surface thereof, the cleaning layer containing a urethane polymer and a vinyl monomer.

Cleaning sheet and its production method as well as transporting member having such cleaning sheet

A reversible heat-sensitive recording material, a method of recording and erasing information using the recording material, and a magnetic card using the recording material, the recording material comprising a reversible heat-sensitive recording material comprising a heat-sensitive layer containing a resin matrix and an organic low molecular weight material, said organic low molecular weight material containing at least one higher fatty acid having 16 or more carbon atoms and a sulfide represented by the formula

Reversible heat-senitive recording material and magnetic card using the

An intra-ocular lens comprising a lens part and a fixing part for fixing the lens part in an eye, the lens part comprising a colorless and transparent polyimide containing at least one of repeating units represented by formulae (I) to (IV): ##STR1## wherein X.sub.1 represents ##STR2## X.sub.2 represents ##STR3## X.sub.3 represents ##STR4## Further, the lens part and the fixing part may be integrally molded together, if desired.

Intra-ocular lens

Growing community of inventors

Osaka, Japan

Yoshinori Yoshida