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: 11923206Abstract: 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: GrantFiled: November 18, 2022Date of Patent: March 5, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Masayuki Sakakura, Yoshiaki Oikawa
-
Patent number: 8003825Abstract: 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: GrantFiled: April 21, 2006Date of Patent: August 23, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Masami Fukao, Miyuki Oikawa
-
Publication number: 20100016637Abstract: 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: ApplicationFiled: July 13, 2009Publication date: January 21, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Miyuki OIKAWA, Masaru KITAMURA
-
Patent number: 7161036Abstract: 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: GrantFiled: December 20, 2004Date of Patent: January 9, 2007Assignee: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Masami Fukao
-
Publication number: 20060252962Abstract: 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: ApplicationFiled: April 21, 2006Publication date: November 9, 2006Applicant: Sumitomo Chemical Company, LimitedInventors: Masami Fukao, Miyuki Oikawa
-
Patent number: 7067699Abstract: 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: GrantFiled: April 6, 2004Date of Patent: June 27, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Masami Fukao
-
Publication number: 20050137423Abstract: 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: ApplicationFiled: December 20, 2004Publication date: June 23, 2005Inventors: Miyuki Oikawa, Masami Fukao
-
Patent number: 6894190Abstract: There are disclosed imine compounds of formula (7) and (11), and processes for preparing the same:Type: GrantFiled: June 26, 2003Date of Patent: May 17, 2005Assignee: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
-
Patent number: 6828459Abstract: 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: GrantFiled: June 10, 2003Date of Patent: December 7, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Masami Fukao
-
Publication number: 20040204609Abstract: 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: ApplicationFiled: April 6, 2004Publication date: October 14, 2004Inventors: Miyuki Oikawa, Masami Fukao
-
Publication number: 20040002619Abstract: 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: ApplicationFiled: June 10, 2003Publication date: January 1, 2004Inventors: Miyuki Oikawa, Masami Fukao
-
Publication number: 20030232886Abstract: There are disclosed imine compounds of formula (7) and (11), and processes for preparing the same: 1Type: ApplicationFiled: June 26, 2003Publication date: December 18, 2003Applicant: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
-
Patent number: 6653507Abstract: 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: GrantFiled: May 20, 2002Date of Patent: November 25, 2003Assignee: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
-
Publication number: 20020143212Abstract: There are disclosed areType: ApplicationFiled: May 20, 2002Publication date: October 3, 2002Applicant: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
-
Patent number: 6403832Abstract: 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: GrantFiled: August 4, 2000Date of Patent: June 11, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Miyuki Oikawa, Hideki Ushio, Isao Kurimoto, Takayuki Higashii
-
Patent number: 6172234Abstract: 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: GrantFiled: July 27, 1999Date of Patent: January 9, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Yukihiro Honda, Miyuki Oikawa, Isao Kurimoto
-
Patent number: 5191003Abstract: 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: GrantFiled: August 7, 1991Date of Patent: March 2, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Naoki Inui, Chinehito Ebina, Miyuki Oikawa, Hideo Nagasaki, Shinichi Yachigo, Manji Sasaki