Patents by Inventor Yasushi Miki

Yasushi Miki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7649094
    Abstract: The present invention provides a method of kinetic optical resolution of carboxylic acid derivatives using specific optically active catalysts. A racemic or diastereomeric mixture of carboxylic acid derivatives of the formula (A) is reacted with a nucleophile in the presence of an optically active catalyst to form an optically active nucleophile derivative of the formula (B). The catalyst is an optically active compound represented by the formula (C) or (D) [wherein R1 is a substituted or unsubstituted, saturated or unsaturated, straight-chain, branched or alicyclic aliphatic hydrocarbon group which can have a heteroatom, R2 is ethyl or vinyl, and R5 is hydrogen or methoxy respectively].
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: January 19, 2010
    Assignee: Daiso Co., Ltd.
    Inventors: Yutaka Ishii, Yasushi Miki, Yoshiro Furukawa, Satoshi Murakami
  • Patent number: 7368608
    Abstract: An 1-amido-3-(2-hydroxyphenoxy)-2-propanol derivative represented by the following formula (1), wherein cycle A may have further 1 to 4 substituents, and said substituent means a substituent selected from the group consisting of saturated or unsaturated C1-4 alkyl group, aralkyl group in which alkyl moiety has 1 to 4 carbon atoms, aryl group, halogen atom, halogenated C1-4 alkyl group, C2-5 alkanoyl group, mono or dialkylcarbamoyl group in which alkyl moiety has 1 to 4 carbon atoms, cyano group and nitro group, and the substituents at positions 3 and 6, or at positions 4 and 5 on the cycle A are different each other. Other ring may be fused at positions 3 and 4, or at positions 5 and 6 on the cycle A to form a condensed polycyclic hydrocarbon with the cycle A. R1 is alkanoyl group or aroyl group, and R2 is hydrogen atom, alkanoyl group or aroyl group, or R1 and R2 may be combined together with the N atom to form a cyclic imido group, which is useful as an intermediate of medicines, etc.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: May 6, 2008
    Assignee: Daiso Co., Ltd.
    Inventors: Yasushi Miki, Masafumi Mikami
  • Patent number: 7265232
    Abstract: A process for producing a glycidyl ether and an optically active compound thereof with high yield and an optically high purity comprising reacting an alcohol with epihalohydrin in a base to thereby produce a glycidyl ether, the reaction performed in a two-layer system of a nonaqueous organic solvent and an aqueous solvent.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: September 4, 2007
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiro Furukawa, Yasushi Miki, Keisuke Yaegashi
  • Patent number: 7161047
    Abstract: A process for preparing a secondary alcohol which is characterized in adding a primary or a secondary amine in the reaction system in case that the secondary alcohol is prepared by hydrogenating in the presence of a noble metal, an epoxy derivative represented by the following formula, wherein R1 and R2 are the same or different, an organic group not containing aldehyde group or ketone group therein or hydrogen atom, provided that both R1 and R2 are not simultaneously hydrogen atom.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: January 9, 2007
    Assignee: Daiso Co., Ltd.
    Inventors: Yasushi Miki, Daisuke Fukumoto, Masafumi Mikami
  • Patent number: 7135576
    Abstract: A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or by reacting phthalimide with an epihalohydrin or an optically active epihalohydrin in the presence of an alkali metal carbonate, an alkali metal hydrogencarbonate or a quaternary ammonium salt to obtain a N-(3-halogeno-2-hydroxypropyl)phthalimide and then by cyclizing the product with an alkali metal alkoxide.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: November 14, 2006
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiro Furukawa, Yasushi Miki
  • Publication number: 20060030721
    Abstract: A process for producing a glycidyl ether and an optically active compound thereof with high yield and an optically high purity comprising reacting an alcohol with epihalohydrin in a base to thereby produce a glycidyl ether, the reaction performed in a two-layer system of a nonaqueous organic solvent and an aqueous solvent.
    Type: Application
    Filed: May 29, 2003
    Publication date: February 9, 2006
    Applicant: DAISO CO., LTD
    Inventors: Yoshiro Furukawa, Yasushi Miki, Keisuke Taegashi
  • Publication number: 20060019993
    Abstract: An 1-amido-3-(2-hydroxyphenoxy)-2-propanol derivative represented by the following formula (1), wherein cycle A may have further 1 to 4 substituents, and said substituent means a substituent selected from the group consisting of saturated or unsaturated C1-4 alkyl group, aralkyl group in which alkyl moiety has 1 to 4 carbon atoms, aryl group, halogen atom, halogenated C1-4 alkyl group, C2-5 alkanoyl group, mono or dialkylcarbamoyl group in which alkyl moiety has 1 to 4 carbon atoms, cyano group and nitro group, and the substituents at positions 3 and 6, or at positions 4 and 5 on the cycle A are different each other. Other ring may be fused at positions 3 and 4, or at positions 5 and 6 on the cycle A to form a condensed polycyclic hydrocarbon with the cycle A. R1 is alkanoyl group or aroyl group, and R2 is hydrogen atom, alkanoyl group or aroyl group, or R1 and R2 may be combined together with the N atom to form a cyclic imido group, which is useful as an intermediate of medicines, etc.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 26, 2006
    Inventors: Yasushi Miki, Masafumi Mikami
  • Publication number: 20050222470
    Abstract: A process for preparing a secondary alcohol which is characterized in adding a primary or a secondary amine in the reaction system in case that the secondary alcohol is prepared by hydrogenating in the presence of a noble metal, an epoxy derivative represented by the following formula, wherein R1 and R2 are the same or different, an organic group not containing aldehyde group or ketone group therein or hydrogen atom, provided that both R1 and R2 are not simultaneously hydrogen atom.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 6, 2005
    Inventors: Yasushi Miki, Daisuke Fukumoto, Masafumi Mikami
  • Publication number: 20050154209
    Abstract: The present invention provides a method of kinetic optical resolution of carboxylic acid derivatives using specific optically active catalysts. A racemic or diastereomeric mixture of carboxylic acid derivatives of the formula (A) is reacted with a nucleophile in the presence of an optically active catalyst to form an optically active nucleophile derivative of the formula (B). The catalyst is an optically active compound represented by the formula (C) or (D) [wherein R1 is a substituted or unsubstituted, saturated or unsaturated, straight-chain, branched or alicyclic aliphatic hydrocarbon group which can have a heteroatom, R2 is ethyl or vinyl, and R5 is hydrogen or methoxy respectively].
    Type: Application
    Filed: January 31, 2003
    Publication date: July 14, 2005
    Inventors: Yutaka Ishii, Yasushi Miki, Yoshiro Furukawa, Satoshi Murakami
  • Publication number: 20050113583
    Abstract: A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or by reacting phthalimide with an epihalohydrin or an optically active epihalohydrin in the presence of an alkali metal carbonate, an alkali metal hydrogencarbonate or a quaternary ammonium salt to obtain a N-(3-halogeno-2-hydroxypropyl)phthalimide and then by cyclizing the product with an alkali metal alkoxide.
    Type: Application
    Filed: January 7, 2005
    Publication date: May 26, 2005
    Inventors: Yoshiro Furukawa, Yasushi Miki
  • Patent number: 6875875
    Abstract: A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or by reacting phthalimide with an epihalohydrin or an optically active epihalohydrin in the presence of an alkali metal carbonate, an alkali metal hydrogencarbonate or a quaternary ammonium salt to obtain a N-(3-halogeno-2-hydroxypropyl)phthalimide and then by cyclizing the product with an alkali metal alkoxide.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: April 5, 2005
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiro Furukawa, Yasushi Miki
  • Publication number: 20040087802
    Abstract: A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or
    Type: Application
    Filed: September 25, 2003
    Publication date: May 6, 2004
    Inventors: Yoshiro Furukawa, Yasushi Miki
  • Publication number: 20010002383
    Abstract: A molded catalyst is provided, which is a crystalline aluminosilicate molecular sieve or crystalline silicoaluminophosphate molecular sieve, containing swelling synthetic mica, as binder. The present molded catalyst exhibits a sufficient disruptive strength even with a small amount of the binder added.
    Type: Application
    Filed: November 29, 2000
    Publication date: May 31, 2001
    Inventors: Toshio Hidaka, Yasushi Miki, Takeshi Kawai
  • Patent number: 6180828
    Abstract: Methylamines are prepared from methanol and ammonia in the presence of modified molecular sieve catalysts obtained by mixing crystalline molecular sieves such as SAPO with modifiers such as titanium oxide. The catalysts are also suitably used for a disproportionation reaction of monomethylamine.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: January 30, 2001
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Toshio Hidaka, Katsumi Higuchi, Nobuyuki Koike, Yasushi Miki
  • Patent number: 4731057
    Abstract: A transfusion apparatus including a pump section for sequentially pressing and occluding a transfusion tube by means of a plurality of finger elements of a peristaltic type thereby to feed a liquid, a detecting section having (1) a circuit for detecting a given reference position of the pump section to generate a corresponding detection signal during periodic peristaltic movement of the pump section and (2) a circuit for detecting a working position of the pump section deviated from the reference position through the peristaltic movement thereby to generate a corresponding detection signal, and a drive controlling section for receiving the detected signals from the detecting section to compute and control the peristaltic rate thereby to maintain a constant delivery amount by the pump section.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: March 15, 1988
    Assignee: Nikkiso Co., Ltd.
    Inventors: Shigeru Tanaka, Tetsuya Miyatake, Yasushi Miki