Sanyo Chemical Industries, Ltd.

Rohm Co., Ltd.

The Yokohama Rubber Co., Ltd.

Kobelco Eagle Marine Engineering Co., Ltd.

Tsuyoshi Okamoto

Yoshitaka Katsukawa

Seiichi Yamamoto

Yoshihiro Kameda

Kazuhisa Ukai

Tsuyoshi Fukushima

Mitsumasa Kamura

Yasuhiro Yamada

Aki Hidaka

Yusuke Yamazaki

Satoru Yamakawa

Takaichi Imai

Toshiki Kojima

Satoru c/o Sanyo Chem Ind Ltd Yamakawa

A nonvolatile semiconductor storage device has floating-gate memory cells and a memory control circuit which controls them. During programming operation of the memory cells, the memory control circuit makes the potentials at the backgate and source of the memory cells equal. For example, during programming operation of the memory cells, the memory control circuit short-circuits together the backgate and source of the memory cells. For another example, during programming operation of the memory cells, the memory control circuit switches from a state where the potentials at the backgate and source of the memory cells are equal to a floating state.

Nonvolatile semiconductor storage device

The present invention provides a water-soluble lubricating oil including a water-soluble base (A) and a corrosion inhibitor (B). The water-soluble base (A) contains at least one polyether (A1). A 0.1% by weight aqueous solution of the water-soluble lubricating oil has a surface tension of 31 mN/m or higher.

Water-soluble lubricant oil

A water-soluble cutting fluid for slicing silicon ingots is characterized in that it includes a monoprotic or diprotic aliphatic carboxylic acid (A) having a carbon number (including the carbon in the carbonyl group) of 4&#x2dc;10, and either a polyprotic organic acid (B) with &#x394;pKa of 0.9&#x2dc;2.3 as defined by the following formula (1) or a salt (BA) of said organic acid (B) as essential components:&#x394;pKa=(pKa)&#x2212;(pKa)&#x2003;&#x2003;(1)

Water-soluble cutting fluid for slicing silicon ingots

A rubber composition for a tire containing 100 parts by weight of a rubber, 1 to 30 parts by weight of a polyether (E1) having the formula (I):R&#x2014;{(OCHCHCHCH)(OA)&#x2014;OH}&#x2003;&#x2003;(I)wherein Ris a residue of a Cto Ccompound having 1-6 hydroxyl groups, from which at least one hydroxyl group is removed, A Ls a Cto Calkylene group other than a 1,4-butylene group, q is an integer of 1 to 6, and m and n are independently integers of 1 to 600, and/or the derivative thereof (E2) and 10 to 180 parts by weight of a filler, which is excellent in processability, silica dispersability abrasion resistance and wet braking performance, etc.

Rubber composition for tire and pneumatic tire made therefrom

The present invention has its object to provide a lubricating oil for ship propulsor bearings which is high in bearing-damaging pressure, equivalent in lubricity and anticorrosiveness to the conventional mineral oil-based lubricating oils, higher in biodegradability than in the art and miscible with seawater. The present invention provides a lubricating oil for ship propulsor bearings which comprises a water-soluble alkylene glycol and/or polyalkylene glycol (A) with a number average molecular weight of not higher than 1,000 as a base oil as well as a water-soluble thickening agent (B) and a water-soluble anticorrosive agent (C) and in which the content of (A) is 80 to 98% by weight, that of(B) is 1 to 10% by weight and that of(C) is 1 to 10% by weight, relative to the weight of the lubricating oil for ship propulsor bearings and the bearing-damaging pressure at 50&#xb0; C. is not lower than 3.5 MPa.

Lubricating oil for ship propulsor bearings

Growing community of inventors

Kyoto, Japan

Tsuyoshi Okamoto