Patents by Inventor Kunio Yamamoto
Kunio Yamamoto 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).
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Publication number: 20090069515Abstract: A solid titanium catalyst component (I) of the present invention is characterized in that it contains titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is not a hydrogen atom. When using this solid titanium catalyst component (I), an olefin polymer having a broad molecular weight distribution can be produced.Type: ApplicationFiled: January 19, 2006Publication date: March 12, 2009Applicant: MITSUI CHEMICALS,INC.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Patent number: 7500587Abstract: A combustion-type power tool includes a housing, a cylinder head disposed at one end of the housing, a cylinder in the housing, a piston slidably disposed in the cylinder, and a driver blade connected to the piston. A combustion-chamber is provided in the housing, a fan is disposed in the combustion chamber, and a motor having an output shaft is coupled to the fan. A motor holder accommodates the motor, and the cylinder head is formed with a motor holder receiving portion in which the motor holder is slidably movably disposed. An elastic member is disposed in a gap formed between the motor holder and the motor holder receiving portion.Type: GrantFiled: October 4, 2006Date of Patent: March 10, 2009Assignee: Hitachi Koki Co., Ltd.Inventors: Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Shinki Ohtsu, Haruhisa Fujisawa
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Publication number: 20080306228Abstract: The process for producing an olefin polymer according to the present invention is characterized in that it comprises polymerizing an olefin having 3 or more carbon atoms in the presence of a catalyst for olefin polymerization containing a solid titanium catalyst component (I) which contains titanium, magnesium, halogen, and a cyclic ester compound (a) specified by the following formula (1): wherein n is an integer of 5 to 10, R2 and R3 are each independently COOR1 or a hydrogen atom, and at least one of R2 and R3 is COOR1; and R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms, and a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is a hydrogen atom) in the cyclic backbone may be replaced with a double bond, and an organometallic compound catalyst component (II), at an internal pressure of the polymerization vessel which is 0.25 times or more as high as the saturation vapor pressure of the olefin at a polymerization temperature.Type: ApplicationFiled: January 19, 2006Publication date: December 11, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Publication number: 20080125555Abstract: A catalyst for olefin polymerization of the present invention includes a solid titanium catalyst component (I) including titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is not a hydrogen atom, and an organometal compound catalyst component (II). When this catalyst for olefin polymerization is used, an olefin polymer having a broad molecular weight distribution can be produced.Type: ApplicationFiled: July 26, 2007Publication date: May 29, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Publication number: 20080097050Abstract: A solid titanium catalyst component (I) of the present invention is characterized in that it contains titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is not a hydrogen atom. When using this solid titanium catalyst component (I), an olefin polymer having a broad molecular weight distribution can be produced.Type: ApplicationFiled: July 26, 2007Publication date: April 24, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Patent number: 7305940Abstract: In the combustion-type power tool, a first shelter wall and a second shelter wall are disposed to partially surround an area between an ignition plug and an ignition ground. Two gaps are provided between the first and second shelter walls. The first shelter wall extends radially outwardly from an outer peripheral surface of a motor boss, and also protrudes from an end face in an axial direction of a fan shaft. The first shelter wall has a lower end surface inclined such that an axial length between the end face and the lower end surface is gradually reduced toward radially outer end of the first shelter wall.Type: GrantFiled: February 17, 2006Date of Patent: December 11, 2007Assignee: Hitachi Koki Co., Ltd.Inventors: Tomomasa Nishikawa, Yasuki Ohmori, Shinki Ohtsu, Kunio Yamamoto, Yoshitaka Akiba, Haruhisa Fujisawa
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Publication number: 20070034661Abstract: A combustion-type power tool includes a housing, a cylinder head disposed at one end of the housing, a cylinder in the housing, a piston slidably disposed in the cylinder, and a driver blade connected to the piston. A combustion-chamber is provided in the housing, a fan is disposed in the combustion chamber, and a motor having an output shaft is coupled to the fan. A motor holder accommodates the motor, and the cylinder head is formed with a motor holder receiving portion in which the motor holder is slidably movably disposed. An elastic member is disposed in a gap formed between the motor holder and the motor holder receiving portion.Type: ApplicationFiled: October 4, 2006Publication date: February 15, 2007Inventors: Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Shinki Ohtsu, Haruhisa Fujisawa
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Patent number: 7121442Abstract: A combustion-type nail driver uses a motor for driving a fan. A motor holder formed from plastic accommodates the motor. A cylinder head has a motor holder receiving portion in which the motor holder is slidably movably disposed. A coil spring has one end secured to the motor holder and another end secured to the cylinder head to thereby support the motor holder. Initial acceleration applied to the motor when combustion occurs can be suppressed and impact imparted upon the motor can also be suppressed by friction between the outer periphery of the motor holder and the inner periphery of the motor holder receiving portion. A heat shielding plate is interposed between the lower end surface of the motor and the cylinder head in order to prevent hot air combustion gas from entering into the motor.Type: GrantFiled: April 19, 2005Date of Patent: October 17, 2006Assignee: Hitachi Koki Co., Ltd.Inventors: Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Shinki Ohtsu, Haruhisa Fujisawa
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Publication number: 20060186165Abstract: In the combustion-type power tool, a first shelter wall and a second shelter wall are disposed to partially surround an area between an ignition plug and an ignition ground. Two gaps are provided between the first and second shelter walls. The first shelter wall extends radially outwardly from an outer peripheral surface of a motor boss, and also protrudes from an end face in an axial direction of a fan shaft. The first shelter wall has a lower end surface inclined such that an axial length between the end face and the lower end surface is gradually reduced toward radially outer end of the first shelter wall.Type: ApplicationFiled: February 17, 2006Publication date: August 24, 2006Inventors: Tomomasa Nishikawa, Yasuki Ohmori, Shinki Ohtsu, Kunio Yamamoto, Yoshitaka Akiba, Haruhisa Fujisawa
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Publication number: 20060129009Abstract: A fuel gas has a gas including at least 40 weight % or more of 1-butene and propane, or at least 56 weight % or more of 1-butene and propylene. A combustion type power tool is driven by the fuel gas. A compressed gas container for a combustion type power tool has an inner side vessel filled with the fuel gas. When the fuel gas includes propane, 1-butene may be equal to or higher than 59 weight % and equal to or lower than 95 weight %. When the fuel gas includes propylene, the 1-butene may be equal to or higher than 70 weight % and equal to or lower than 96 weight %.Type: ApplicationFiled: November 23, 2005Publication date: June 15, 2006Inventors: Tomomasa Nishikawa, Shinki Ohtsu, Yasuki Ohmori, Kunio Yamamoto
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Patent number: 7010541Abstract: A man-hour management system (1 in FIG.Type: GrantFiled: April 26, 2001Date of Patent: March 7, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kunio Yamamoto, Tokiyuki Ichikawa, Toyozo Morinaka
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Publication number: 20050229598Abstract: A combustion-type nail driver uses a motor for driving a fan. A motor holder formed from plastic accommodates the motor. A cylinder head has a motor holder receiving portion in which the motor holder is slidably movably disposed. A coil spring has one end secured to the motor holder and another end secured to the cylinder head to thereby support the motor holder. Initial acceleration applied to the motor when combustion occurs can be suppressed and impact imparted upon the motor can also be suppressed by friction between the outer periphery of the motor holder and the inner periphery of the motor holder receiving portion. A heat shielding plate is interposed between the lower end surface of the motor and the cylinder head in order to prevent hot air combustion gas from entering into the motor.Type: ApplicationFiled: April 19, 2005Publication date: October 20, 2005Inventors: Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Shinki Ohtsu, Haruhisa Fujisawa
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Patent number: 6921009Abstract: A nailing machine, in which a part constituting a nose is changed so as to increase the service life of a driver blade for driving a nail. The nailing machine includes a nose having a nose hole in which the nail is supplied, and the driver blade made of metal. At least a part of a surface of the nose hole to be in contact with a front surface of the driver blade is provided with a protective body. The protective body is made of an organic material or a composite material of an organic material and a metal material. Due to this, direct mutual contact of the metal parts is prevented.Type: GrantFiled: October 25, 2002Date of Patent: July 26, 2005Assignee: Hitachi Koki Co., Ltd.Inventors: Satsuo Sato, Takuhiro Murakami, Kunio Yamamoto
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Publication number: 20030080171Abstract: A nailing machine, such as a pneumatic nailing machine, in which a part constituting a nose is changed so as to increase the service life of a driver blade for driving a nail. The nailing machine includes a nose having a nose hole in which the nail is supplied, and the driver blade made of metal. At least a part of a surface of the nose hole to be in contact with a front surface of the driver blade is provided with a protective body. The protective body is made of an organic material or a composite material of an organic material and a metal material. Due to this, direct mutual contact of the metal parts is prevented.Type: ApplicationFiled: October 25, 2002Publication date: May 1, 2003Applicant: Hitachi Koki Co., Ltd.Inventors: Satsuo Sato, Takuhiro Murakami, Kunio Yamamoto
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Publication number: 20010051891Abstract: A man-hour management system (1 in FIG.Type: ApplicationFiled: April 26, 2001Publication date: December 13, 2001Inventors: Kunio Yamamoto, Tokiyuki Ichikawa, Toyozo Morinaka
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Patent number: 6246679Abstract: An integrated communication system for voice and data connecting an Ethernet LAN to an external communication network by utilizing a conventional communication system. An interface connected to the Ethernet LAN and transferring a voice signal at a data link level without processors is stored in a personal computer. An ISDN voice interface for connecting the personal computer to the external communication network with a voice channel is connected to the LAN. The input/output data of the ISDN voice interface and various routers performing data communication on the LAN is multiplexed/demultiplexed in a plurality of channels by an ADSL multiplexer. The input/output data of the multiplexer is connected to the external communication network through an access network having a user interface.Type: GrantFiled: July 22, 1998Date of Patent: June 12, 2001Assignee: Fujitsu LimitedInventor: Kunio Yamamoto
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Patent number: 6111882Abstract: An on-demand system controlling on-demand services between a media server and subscriber terminals, the system includes an ATM-HUB unit which performs a path setting operation in accordance with a PVC (Permanent Virtual Connection) function, and a path setting management server. The ATM-HUB unit has previously set paths between the subscriber terminals and the path setting management server and between a controller of the ATM-HUB unit and the path setting management server in accordance with the PVC function at a time of setting environments of the system. A subscriber terminal supplying a media transmission request to the path setting management server via the path set between the subscriber terminal and the path setting management server.Type: GrantFiled: March 26, 1997Date of Patent: August 29, 2000Assignee: Fujitsu LimitedInventor: Kunio Yamamoto
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Patent number: 5991276Abstract: A multipoint videoconference system which efficiently delivers video and voice information along with various types of material data to realize a more realistic teleconferencing environment. The system comprises a plurality of videoconference terminals, a videoconference server, and a videoconference administration server. Each videoconference terminal transmits a video signal, a voice signal, and a material data signal over an ATM network. The videoconference server rearranges the video signals, the voice signals, and the material data signals received from the plurality of videoconference terminals. It sends the rearranged signals back to the videoconference terminals via the ATM network. The videoconference administration server controls network connections between the videoconference server and the videoconference terminals.Type: GrantFiled: April 21, 1997Date of Patent: November 23, 1999Assignee: Fujitsu LimitedInventor: Kunio Yamamoto
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Patent number: D529578Type: GrantFiled: April 25, 2005Date of Patent: October 3, 2006Assignee: Hitachi Koki Co., Ltd.Inventor: Kunio Yamamoto
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Patent number: D554734Type: GrantFiled: April 25, 2005Date of Patent: November 6, 2007Assignee: Hitachi Koki Co., Ltd.Inventor: Kunio Yamamoto