Other

Oki Electric Industry Co., Ltd.

3m Innovative Properties Company

Tokyo Ohka Kogyo Co., Ltd.

Solventum Intellectual Properties Company

Yukihisa Okada

Akira Hashimoto

Yoshihiro Sawada

Ichiro Koiwa

Juro Mita

Hiroyo Kato

Tetsuya Osaka

Yoshinori Maeno

Mitsuaki Kobayashi

Takaaki Shirai

Hideyuki Okada

Takao Kanehara

Yoichi Nishioka

Yutaka Okabe

A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 MΩ·cm or more is allowed to pass through a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.

Filter and metal ion removing method

To provide a filter capable of efficiently removing metal ions in a treatment liquid, and capable of easily obtaining a solution having an extremely low metal ion content. A depth filter includes a porous molded article. The porous molded article is a sintered material of mixed powder or a swollen material of the sintered material. The mixed powder contains dried gel powder and thermoplastic resin powder. The dried gel powder contains an ion exchange resin including a sulfonic acid group, and a nitrogen-containing chelating resin.

Filter and metal ion removal device

A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 M&#x3a9;&#xb7;cm or more is allowed to pass through a space velocity of 1200 hr&#x2212;1, the electric resistivity value of water after passage is 15 M&#x3a9;&#xb7;cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.

Filter, metal ion removing method, and metal ion removing apparatus

The invention discloses a coating solution for use in forming Bi-based ferroelectric thin films containing Bi, metallic element A (at least one selected from the group consisting of Bi, Pb, Ba, Sr, Ca, Na, K and rare earth elements) and metallic element B (at least one selected from the group consisting of Ti, Nb, Ta, W, Mo, Fe, Co and Cr), wherein it contains metal alkoxides of Bi, metallic element A and metallic element B respectively, and an organometallic compound obtainable by hydrolyzing composite metal alkoxides, formed by any two or more of said metal alkoxides, with water alone or in combination with a catalyst, and contains Bi in a molar amount 1-1.1 times as great as the stoichiometric amount; a ferroelectric thin film ( ), a ferroelectric capacitor ( ) and a ferroelectric memory with the use of such a coating solution; and a method for producing the same.

COATING SOLUTIONS FOR USE IN FORMING BISMUTH-BASED FERROELECTRIC THIN FILMS, AND FERROELECTRIC THIN FILMS, FERROELECTRIC CAPACITORS AND FERROELECTRIC MEMORIES FORMED WITH SAID COATING SOLUTIONS, AS WELL AS PROCESSES FOR PRODUCTION THEREOF

The invention discloses a coating solution for use in forming Bi-based ferroelectric thin films containing Bi, metallic element A (at least one selected from the group consisting of Bi. Pb, Ba, Sr, Ca, Na, K and rare earth elements) and metallic element B (at least one selected from the group consisting of Ti, Nb, Ta, W, Mo, Fe, Co and Cr), wherein it contains metal alkoxides of Bi, metallic element A and metallic element B respectively, and contains composite metal alkoxides formed by any two or more of said metal alkoxides; and a ferroelectric thin film, a ferroelectric capacitor and a ferroelectric memory formed by the use of such coating solution, and a method for producing the same.

Coating solutions for use in forming bismuth-based ferroelectric thin films, and ferroelectric memories formed with said coating solutions, as well as processes for production thereof

The invention discloses a coating solution for use in forming Bi-based ferroelectric thin films containing Bi, metallic element A (at least one selected from the group consisting of Bi, Pb, Ba, Sr, Ca, Na, K and rare earth elements) and metallic element B (at least one selected from the group consisting of Ti, Nb, Ta, W, Mo, Fe, Co and Cr), wherein it contains metal alkoxides of Bi, metallic element A and metallic element B respectively, and an organometallic compound obtainable by hydrolyzing composite metal alkoxides, formed by any two or more of said metal alkoxides, with water alone or in combination with a catalyst, and contains Bi in a molar amount 1-1.1 times as great as the stoichiometric amount; a ferroelectric thin film (,), a ferroelectric capacitor (,) and a ferroelectric memory with the use of such a coating solution; and a method for producing the same.

Coating solutions for use in forming bismuth-based ferroelectric thin films, and ferroelectric thin films, ferroelectric capacitors and ferroelectric memories formed with said coating solutions, as well as processes for production thereof

Coating solutions for use in forming bismuth-based ferroelectric thin

A thermoreversible recording material having its transparency changed in accordance with its thermal history, in particular the rate of cooling and the temperature to which it has been heated, comprises a matrix material and an organic compound of low molecular weight, wherein the matrix material comprises polyvinyl acetal, and the organic compound of low molecular weight comprises a saturated carboxylic acid or derivative thereof. The matrix material may further contains a material selected from a group consisting of epoxy resin, phenol resin, epoxy compound, aldehyde compound and isocyanate compound. A thermoreversible recording medium comprising the above thermoreversible recording material may be selectively heated by a thermal head or the like to record visual information. The visual information may be erased by heating the medium and cooling it slowly.

Growing community of inventors

Tokyo, Japan

Yukihisa Okada