Asahi Glass Company, Limited

Lapis Semiconductor Co., Ltd.

Toru Ueno

Hirotsugu Yamamoto

Hiroshi Hatano

Toshihiko Higuchi

Takao Doi

Minoru Yamada

Takashi Watabe

Kazunori Chiba

Shinya Saiki

Etsuko Sakai

Kenji Arai

Kazuya Oharu

Seisaku Kumai

Tetsuo Oomori

Toru Shimoyama

Kentaro Toda

Hirofumi Ogawa

Manabu Miyazawa

Kenichiro Nagatomo

Tsuguto Maruko

A circuit board device includes: a printed wiring board; an IC chip provided on an obverse surface of the board and having at least one ground terminal; and a wiring pattern, disposed on the board, for providing a ground potential to the ground terminal of the IC chip. The wiring pattern is disposed on a reverse surface of the printed wiring board. The circuit board device has at least one via that is connected to the wiring pattern and passes through the printed wiring board at a position within a region where the IC chip is mounted on the obverse surface of the printed wiring board.

Circuit board device and printed wiring board

A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).

Process for purifying a polyether

A production method which comprises reacting one or more feedstock compounds to form a desired compound having a boiling point higher than the feedstock compounds, wherein the reaction is carried out under reflux in a distillation column portion of a reactor provided with the distillation column.

Distillation column type production method

Growing community of inventors

Yokohama, Japan

Toru Ueno