Patents by Inventor Miyuki Oikawa

Miyuki Oikawa 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: 11923206
    Abstract: An object is to provide a display device with excellent display characteristics, where a pixel circuit and a driver circuit provided over one substrate are formed using transistors which have different structures corresponding to characteristics of the respective circuits. The driver circuit portion includes a driver circuit transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using a metal film, and a channel layer is formed using an oxide semiconductor. The pixel portion includes a pixel transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using an oxide conductor, and a semiconductor layer is formed using an oxide semiconductor. The pixel transistor is formed using a light-transmitting material, and thus, a display device with higher aperture ratio can be manufactured.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: March 5, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Masayuki Sakakura, Yoshiaki Oikawa
  • Patent number: 8003825
    Abstract: The present invention provides a process for producing a cycloalkanone oxime by conducting a continuous ammoximation reaction in the presence of a titanosilicate catalyst with supplying a cycloalkanone, hydrogen peroxide, ammonia and an organic solvent into the reaction system, wherein the reaction temperature is from 90° C. to 120° C. and the supplying amount of the organic solvent is not more than 2 times by weight of that of the cycloalkanone.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: August 23, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masami Fukao, Miyuki Oikawa
  • Publication number: 20100016637
    Abstract: The present invention provides a method for producing an oxime by carrying out an ammoximation reaction of a ketone with an organic peroxide and ammonia in a solvent in the presence of a titanosilicate, characterized in that the reaction is carried out by feeding the ketone and ammonia to a reactor in which the solvent, the titanosilicate and the organic peroxide are charged.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 21, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Miyuki OIKAWA, Masaru KITAMURA
  • Patent number: 7161036
    Abstract: A process for producing an oxime is provided, wherein the process comprises the step of reacting a ketone, hydrogen peroxide and ammonia in the presence of a crystalline titanosilicate having MWW structure under the condition that the ammonia concentration in the liquid portion of the reaction mixture is about 1% by weight or more. By the process, an ammoximation reaction of the ketone can be carried out with a high conversion of the ketone and a high selectivity to the oxime corresponding to the ketone, thereby producing the oxime with a high yield.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: January 9, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Masami Fukao
  • Publication number: 20060252962
    Abstract: The present invention provides a process for producing a cycloalkanone oxime by conducting a continuous ammoximation reaction in the presence of a titanosilicate catalyst with supplying a cycloalkanone, hydrogen peroxide, ammonia and an organic solvent into the reaction system, wherein the reaction temperature is from 90° C. to 120° C. and the supplying amount of the organic solvent is not more than 2 times by weight of that of the cycloalkanone.
    Type: Application
    Filed: April 21, 2006
    Publication date: November 9, 2006
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Masami Fukao, Miyuki Oikawa
  • Patent number: 7067699
    Abstract: In producing cyclohexanone oxime by a method comprising the step of reacting cyclohexanone, hydrogen peroxide and ammonia in the presence of titanium silicate, a brand-new titanium silicate and a recycled titanium silicate which has been recovered from a production method of cyclohexanone oxime are used. In accordance with the present invention, cyclohexanone is subjected to ammoximation by hydrogen peroxide and ammonia with suppressing the degradation- of titanium silicate as a catalyst, to produce cyclohexanone oxime with a high yield.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: June 27, 2006
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Masami Fukao
  • Publication number: 20050137423
    Abstract: A process for producing an oxime is provided, wherein the process comprises the step of reacting a ketone, hydrogen peroxide and ammonia in the presence of a crystalline titanosilicate having MWW structure under the condition that the ammonia concentration in the liquid portion of the reaction mixture is about 1% by weight or more. By the process, an ammoximation reaction of the ketone can be carried out with a high conversion of the ketone and a high selectivity to the oxime corresponding to the ketone, thereby producing the oxime with a high yield.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 23, 2005
    Inventors: Miyuki Oikawa, Masami Fukao
  • Patent number: 6894190
    Abstract: There are disclosed imine compounds of formula (7) and (11), and processes for preparing the same:
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: May 17, 2005
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
  • Patent number: 6828459
    Abstract: A cyclohexanone oxime is produced in a method comprising the step of reacting a cyclohexanone with a hydrogen peroxide and an ammonia in the presence of a titanium silicate and a silicon compound other than the titanium silicate. In the method, the reaction is conducted with suppressing the inactivation of the titanium silicate as a catalyst, to produce the cyclohexanone oxime with a high yield.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: December 7, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Masami Fukao
  • Publication number: 20040204609
    Abstract: In producing cyclohexanone oxime by a method comprising the step of reacting cyclohexanone, hydrogen peroxide and ammonia in the presence of titanium silicate, a brand-new titanium silicate and a recycled titanium silicate which has been recovered from a production method of cyclohexanone oxime are used. In accordance with the present invention, cyclohexanone is subjected to ammoximation by hydrogen peroxide and ammonia with suppressing the degradation- of titanium silicate as a catalyst, to produce cyclohexanone oxime with a high yield.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Miyuki Oikawa, Masami Fukao
  • Publication number: 20040002619
    Abstract: A cyclohexanone oxime is produced in a method comprising the step of reacting a cyclohexanone with a hydrogen peroxide and an ammonia in the presence of a titanium silicate and a silicon compound other than the titanium silicate. In the method, the reaction is conducted with suppressing the inactivation of the titanium silicate as a catalyst, to produce the cyclohexanone oxime with a high yield.
    Type: Application
    Filed: June 10, 2003
    Publication date: January 1, 2004
    Inventors: Miyuki Oikawa, Masami Fukao
  • Publication number: 20030232886
    Abstract: There are disclosed imine compounds of formula (7) and (11), and processes for preparing the same: 1
    Type: Application
    Filed: June 26, 2003
    Publication date: December 18, 2003
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
  • Patent number: 6653507
    Abstract: There are disclosed are A diastereomer salt of formula (1): a process for producing the same, a process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid of formula (2′): a novel optically active amine compound of formula (4): a novel optically active amine compound of formula (8): an imine compound of formula (7) or (11):
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: November 25, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
  • Publication number: 20020143212
    Abstract: There are disclosed are
    Type: Application
    Filed: May 20, 2002
    Publication date: October 3, 2002
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
  • Patent number: 6403832
    Abstract: There are disclosed are a diastereomer salt of formula (1): a process for producing the same, a process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid of formula (2′): a novel optically active amine compound of formula (4): a novel optically active amine compound of formula (8): an imine compound of formula (7) or (11):
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: June 11, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
  • Patent number: 6172234
    Abstract: There are disclosed a process for producing the optically active cyclic amino acid ester derivative of the formula (I): by optical resolution method, a process for producing the same and a process for producing an optically active cyclic amino acid using the compound of the formula (I).
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: January 9, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yukihiro Honda, Miyuki Oikawa, Isao Kurimoto
  • Patent number: 5191003
    Abstract: A rubber composition comprising a rubber, a filler and a diamide compound represented by the formula: ##STR1## wherein X is hydrogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, alkanoyl of 2 to 19 total carbon atoms, amino, nitro, cyano, hydroxy, carboxy or halogen, and n is an integer of 2 to 12. This rubber composition is increased in its loss factor and is useful for tires and rubber vibration isolators. For example, the resulting tires prepared from the rubber composition are improved in their gripping performance.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: March 2, 1993
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Naoki Inui, Chinehito Ebina, Miyuki Oikawa, Hideo Nagasaki, Shinichi Yachigo, Manji Sasaki