Patents by Inventor Satoshi Nagai
Satoshi Nagai 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: 20040128109Abstract: The present invention provides a method of inspecting a target component part (e.g., valve casing) of an apparatus (e.g., steam control valve) included in a steam turbine system. When a time period in a range of 24 to 100 hours passes from the shutting-down of the turbine system, or before a temperature of an atmosphere surrounding the component part is lowered to 100° C., the width of the opening of the crack formed in the component part or a clearance relating to the component part is measured without disassembling the target component part and an enclosing member (e.g., valve casing) from the apparatus. As the measurement is performed when a thermal stress is induced in the component parts or when the temperature distribution is wide, the risk level of the crack or the clearance is determined accurately.Type: ApplicationFiled: October 9, 2003Publication date: July 1, 2004Inventors: Kazuhiro Saito, Kazunari Fujiyama, Taiji Hirasawa, Satoshi Nagai, Toshihiro Fujiwara, Hitoshi Kichise, Hirotsugu Kodama, Mitsuyoshi Okazaki
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Publication number: 20040116618Abstract: The polycarbonate resin of the present invention has an improved refractive index, balance of dispersion, photoelastic constant, and so on while still maintaining the characteristics of polycarbonate, such as excellent impact resistance and heat resistance, and is characterized by comprising an aromatic-aliphatic copolymerized polycarbonate resin (A) and an aromatic polycarbonate resin (B) having a structural unit represented by the following formula (1): 1Type: ApplicationFiled: October 9, 2003Publication date: June 17, 2004Inventors: Satoshi Nagai, Makoto Sasaki, Noritaka Murase, Hisashi Yoshida, Tomoyuki Hashimoto
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Publication number: 20040063825Abstract: Aromatic-aliphatic copolycarbonate resin composition obtained by compounding 0.001 to 0.5 part by weight of a benzotriazole ultraviolet absorbent and 0.005 to 0.1 part by weight of a phosphorus antioxidant having a specified structure per 100 parts by weight of an aromatic-aliphatic copolycarbonate resin. A polycarbonate resin composition according to the present invention cuts ultraviolet rays efficiently, shows excellent color tone and melt stability, and shows extremely little coloration at the time of molding.Type: ApplicationFiled: May 19, 2003Publication date: April 1, 2004Inventors: Satoshi Nagai, Yoshinori Isahaya, Makoto Sasaki, Takashi Tsunoda
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Publication number: 20040049413Abstract: A feedback collecting section obtains from an employee feedback on a hotel based on his or her previous personal experience about the hotel, a favorites processing section provides information relating to the employee's favorite hotels, a recommendation processing section provides information relating to recommended hotels selected based on the employee feedback, and a room availability inquiring section provides a list of available rooms that is created by a travel agent website by adding to it the employee feedback.Type: ApplicationFiled: August 6, 2003Publication date: March 11, 2004Applicant: Fujitsu LimitedInventors: Hitoshi Momma, Yuji Kawata, Daisuke Hoki, Satoshi Nagai, Jin Kure, Iori Takeda
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Patent number: 6687832Abstract: A system for controlling topology views for operators in network management includes a data-storage unit which stores data of a base topology view, a security-management unit which controls access-authorization information with respect to each of the operators, the access-authorization information for a given operator defining network elements accessible by the given operator, and a topology-view-management unit which generates data of a dependent topology view by making a partial copy of the data of the base topology view only with respect to the network elements accessible by the given operator, thereby providing the dependent topology view to be presented to the given operator.Type: GrantFiled: August 9, 1999Date of Patent: February 3, 2004Assignee: Fujitsu LimitedInventors: Asuro Harada, Yuki Kajitani, Yasuhiro Yamaguchi, Hiroaki Abe, Naoki Hayashi, Satoshi Nagai, Takeshi Aihana, Fumiyoshi Tomohara
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Patent number: 6632331Abstract: Aldehyde compounds contained in polycyclic diols as impurities are effectively removed by distilling the polycyclic diols in the presence of an alkali metal compound and/or a alkaline earth compound. The distilled polycyclic diols are useful as a diol component of a polymer such as polycarbonate with less yellowing.Type: GrantFiled: July 26, 2001Date of Patent: October 14, 2003Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Shu Yoshida, Satoshi Nagai, Takashi Konishi, Makoto Sasaki
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Publication number: 20030191605Abstract: An apparatus for maintaining plant equipment incorporates: an input unit to receive information on targets and ranges of plant equipment to be maintained, that constitute a plant, inspection information and operation-history information; a failure-event tree breakdown unit to perform tree-breakdown on failures to be expected from events to be inspected; a failure-unreliability function calculation unit to calculate unreliability of each item in the failure-event tree breakdown; a failure-derived monetary loss calculation unit to multiply each unreliability and a cost of recovery from each event to be inspected and accumulate results of multiplication in accordance with the failure-event tree breakdown, thus obtaining a recovery cost; a preventive maintenance expense calculation unit to calculate preventive maintenance expenses for preventing failure events; and a maintenance decision-making unit to decide maintenance timing and technique through comparison between the recovery cost and the preventive maintenaType: ApplicationFiled: April 9, 2003Publication date: October 9, 2003Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kazunari Fujiyama, Toshihiro Fujiwara, Kazuhiro Saito, Taiji Hirawawa, Satoshi Nagai, Hitoshi Kichise, Mitsuyoshi Okazaki, Hirotsugu Kodama, Seiichi Asatsu, Masanori Minowa, Takayuki Iwahashi, Shigeru Harada, Mamoru Sudo, Fumiharu Ishii
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Publication number: 20030191606Abstract: Entered in a plant-maintenance apparatus are data on inspection, diagnosis, repair and operation histories for equipment that constitute a plant to be maintained. Failure-event tree breakdown is performed on failures to be expected for the equipment. Predicted is unreliability of at least one starting item in the failure-event tree breakdown. Unreliability of each item in the failure-event tree is calculated based on failure unreliability function. Unreliability and a cost of recovery from each failure event in the failure-event tree are multiplied and results of the multiplication are accumulated in accordance with the tree breakdown, thus obtaining a recovery cost. Preventive maintenance expenses are calculated for preventing failure events. Maintenance timing and technique are decided through comparison between the recovery cost and the preventive maintenance expenses.Type: ApplicationFiled: April 9, 2003Publication date: October 9, 2003Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kazunari Fujiyama, Toshihiro Fujiwara, Kazuhiro Saito, Taiji Hirasawa, Satoshi Nagai, Hitoshi Kichise, Mitsuyoshi Okazaki, Hirotsugu Kodama, Seiichi Asatsu, Masanori Minowa, Takayuki Iwahashi, Shigeru Harada, Mamoru Sudo, Fumiharu Ishii
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Patent number: 6376641Abstract: An aromatic-aliphatic copolycarbonate and a process for producing the same which comprises polycondensation of an aromatic dihydroxy compound, such as 1,1-bis(4-hydroxyphenyl)cyclohexane, tricyclo(5.2.1.02,6)decanedimethanol, and a carbonic acid diester in a molten state under heating, wherein the carbonic acid diester has a chlorine content of 20 ppm or lower. The copolycarbonate has improved refractive index, balance of dispersion, and photoelastic constant while retaining high impact resistance, high heat resistance, and excellent hue.Type: GrantFiled: June 9, 1999Date of Patent: April 23, 2002Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Satoshi Nagai, Osamu Kondo, Kyohei Takakuwa, Yoshinori Isahaya, Takayasu Fujimori
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Publication number: 20020033324Abstract: Aldehyde compounds contained in polycyclic diols as impurities are effectively removed by distilling the polycyclic diols in the presence of an alkali metal compound and/or a alkaline earth compound. The distilled polycyclic diols are useful as a diol component of a polymer such as polycarbonate with less yellowing.Type: ApplicationFiled: July 26, 2001Publication date: March 21, 2002Inventors: Shu Yoshida, Satoshi Nagai, Takashi Konishi, Makoto Sasaki
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Patent number: 6359103Abstract: An aromatic-aliphatic copolycarbonate and a process for producing the same which comprises polycondensation of an aromatic dihydroxy compound, such as 1,1-bis(4-hydroxyphenyl)cyclohexane, tricyclo(5.2.1.02,6)decanedimethanol, and a carbonic acid diester in a molten state under heating, wherein the carbonic acid diester has a chlorine content of 20 ppm or lower. The copolycarbonate has improved refractive index, balance of dispersion, and photoelastic constant while retaining high impact resistance, high heat resistance, and excellent hue.Type: GrantFiled: August 17, 2000Date of Patent: March 19, 2002Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Satoshi Nagai, Osamu Kondo, Kyohei Takakuwa, Yoshinori Isahaya, Takayasu Fujimori
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Publication number: 20020013445Abstract: An aromatic-aliphatic copolycarbonate and a process for producing the same which comprises polycondensation of an aromatic dihydroxy compound, such as 1,1-bis(4-hydroxyphenyl)cyclohexane, tricyclo(5.2.1.02,6)decanedimethanol, and a carbonic acid diester in a molten state under heating, wherein the carbonic acid diester has a chlorine content of 20 ppm or lower. The copolycarbonate has improved refractive index, balance of dispersion, and photoelastic constant while retaining high impact resistance, high heat resistance, and excellent hue.Type: ApplicationFiled: June 9, 1999Publication date: January 31, 2002Inventors: SATOSHI NAGAI, OSAMU KONDO, KYOHEI TAKAKUWA, TAKAYASU FUJIMORI, YOSHINORI ISAHAYA
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Patent number: 6271336Abstract: A process for producing an aromatic-aliphatic copolycarbonate which is excellent in impact resistance and heat resistance and has large Abbe number, small photoelasticity constant, and excellent color tone. The process comprises conducting polycondensation in a reactor made of a stainless steel comprising at least 12 wt % nickel, at least 22 wt % chromium, and at least 50 wt % iron.Type: GrantFiled: November 30, 2000Date of Patent: August 7, 2001Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Hiromitsu Nagashima, Shu Yoshida, Satoshi Nagai, Yoshinori Isahaya
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Patent number: 6265523Abstract: Processes for producing an aromatic/aliphatic copolycarbonate which has excellent impact resistance, excellent heat resistance, a high Abbe's number, a low photoelastic coefficient, and an excellent color tone.Type: GrantFiled: June 1, 1999Date of Patent: July 24, 2001Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Satoshi Nagai, Osamu Kondo, Shu Yoshida, Makoto Sasaki, Takashi Konishi, Takayasu Fujimori
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Publication number: 20010002418Abstract: A process for producing an aromatic-aliphatic copolycarbonate which is excellent in impact resistance and heat resistance and has large Abbe number, small photoelasticity constant, and excellent color tone. The process comprises conducting polycondensation in a reactor made of a stainless steel comprising at least 12 wt % nickel, at least 22 wt % chromium, and at least 50 wt % iron.Type: ApplicationFiled: November 30, 2000Publication date: May 31, 2001Inventors: Hiromitsu Nagashima, Shu Yoshida, Satoshi Nagai, Yoshinori Isahaya
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Patent number: 6217375Abstract: A wiring harness arranging construction is provided to arrange a wiring harness in a position more toward a passenger compartment than a hinge and a weatherstrip. The construction includes a container casing 10 with a space 10p for accommodating a looped harness, an insertion opening 10f and a withdrawal opening 10g for the harness which are opposed to each other, and a harness fixing portion 10h projecting from the outer surface of the insertion opening 10f. After being inserted through the insertion opening 10f and wound around a windup spring 30 inside the casing 10, the wiring harness is withdrawn through the withdrawal opening 10g. The container casing 10 is secured to either one of a door and a body, and the wiring harness withdrawn from the container casing 10 is extended to the other of the door and the body and secured thereto by a clamp.Type: GrantFiled: April 19, 1999Date of Patent: April 17, 2001Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Satoshi Nagai, Tetuya Funaki, Masahisa Suzuki, Yasuhiro Ando, Shinya Miyamoto
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Patent number: 6133697Abstract: The present invention is to provide a fluorescent lamp dimming apparatus capable of continuously dimming the fluorescent lamp, and capable of eliminating a fluctuation of light outputs, and in particular, capable of turning ON the fluorescent lamp in a low temperature.Type: GrantFiled: September 23, 1999Date of Patent: October 17, 2000Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Lighting Fixture Co., Ltd.Inventors: Satoshi Nagai, Kenichiro Nishi, Takahisa Hamaguchi, Kentaro Eguchi, Jun Bunya, Osamu Ishikawa
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Patent number: 5957702Abstract: A wiring harness arranging construction is provided to arrange a wiring harness in a position more toward a passenger compartment than a hinge and a weatherstrip. The construction includes a container casing 10 with a space 10p for accommodating a looped harness, an insertion opening 10f and a withdrawal opening 10g for the harness which are opposed to each other, and a harness fixing portion 10h projecting from the outer surface of the insertion opening 10f. After being inserted through the insertion opening 10f and wound around a windup spring 30 inside the casing 10, the wiring harness is withdrawn through the withdrawal opening 10g. The container casing 10 is secured to either one of a door and a body, and the wiring harness withdrawn from the container casing 10 is extended to the other of the door and the body and secured thereto by a clamp.Type: GrantFiled: December 23, 1997Date of Patent: September 28, 1999Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Satoshi Nagai, Tetuya Funaki, Masahisa Suzuki, Yasuhiro Ando, Shinya Miyamoto
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Patent number: 5952793Abstract: A current flowing through a discharge lamp 4 is detected by a current detecting circuit 5, and the detected current is outputted as a lamp current signal A to a feedback control circuit 7 where a difference between the lamp current signal A and the dimming control signal B is obtained and amplified, and then a simplified signal D is outputted to an adder 12 which adds the amplified signal D to the dimming control signal B to constitute a control signal E. The control signal is fed back to a high frequency power supply 2. When a comparing circuit 15 detects that the light level of the dimming control signal B with respect to the full light becomes higher than or equal to 40% to 60%, the feedback circuit is disconnected by operating a switch 13 provided between an error amplifying circuit 9 and an adder 12 to stop the feedback control.Type: GrantFiled: March 11, 1997Date of Patent: September 14, 1999Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Lighting Fixture Co., Ltd.Inventors: Kenichiro Nishi, Satoshi Nagai, Kentaro Eguchi, Takeshi Arai, Jun Bunya, Kazutaka Shimizu, Koji Shibata, Isamu Ogawa
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Discharge lamp igniting apparatus for performing a feedback control of a discharge lamp and the like
Patent number: 5910713Abstract: A current flowing through a discharge lamp 4 is detected by a current detecting circuit 5, and the detected current is outputted as a lamp current signal A to a feedback control circuit 7 where a difference between the lamp current signal A and the dimming control signal B is obtained and amplified, and then a amplified signal D is outputted to an adder 12 which adds the amplified signal D to the dimming control signal B to constitute a control signal E. The control signal is fed back to a high frequency power supply 2. When a comparing circuit 15 detects that the light level of the dimming control signal B with respect to the full light becomes higher than or equal to 40% to 60%, the feedback circuit is disconnected by operating a switch 13 provided between an error amplifying circuit 9 and an adder 12 to stop the feedback control.Type: GrantFiled: August 6, 1998Date of Patent: June 8, 1999Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Lighting Fixture Co., Ltd.Inventors: Kenichiro Nishi, Satoshi Nagai, Kentaro Eguchi, Takeshi Arai, Jun Bunya, Kazutaka Shimizu, Koji Shibata, Isamu Ogawa