Patents by Inventor Ichiro Nakamura
Ichiro Nakamura 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: 20050113526Abstract: An allyl type crosslinking agent for use in production of a super water-absorbent polymer comprising a polymerizable compound having a carbon-carbon double bond or a salt thereof. The crosslinking agent comprises a linear hydroxypolyallyl ether having at least one hydroxyl group and at least two allyl groups obtained by allyletherification of hydroxyl groups in a linear polyol compound selected from the group consisting of erythritol, xylitol and sorbitol. This allyl type crosslinking agent is highly soluble in an aqueous solvent, and can give an excellent super water-absorbent polymer, which cannot be obtained in the prior arts, having high levels of both of water absorptivity under atmospheric pressure and water absorptivity under pressurized conditions.Type: ApplicationFiled: January 3, 2005Publication date: May 26, 2005Inventors: Shin-ichiro Nakamura, Yasumi Shimizu, Tohru Matsutomi, Thomas Daniel
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Patent number: 6835325Abstract: A crosslinking agent containing a polyallyl ether compound having at least one hydroxyl group derived from a glycidyl group and at least two allyl groups can be used for the production of a highly water-absorbing polymer comprising a polymerizable compound having a carbon-carbon double bond or a salt thereof, has a high solubility in aqueous solution of the monomer and gives a highly water-absorbing polymer having water absorptivity required at practical levels.Type: GrantFiled: April 19, 2002Date of Patent: December 28, 2004Assignee: Daiso Co., Ltd.Inventors: Shin-ichiro Nakamura, Yasumi Shimizu, Tohru Matsutomi
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Publication number: 20040178393Abstract: A conductive paste having a desired viscosity which does not change with time, and having stable viscosity characteristics, and an electronic component formed using the conductive paste are provided, the conductive paste including a conductive powder, an organic vehicle, at least one compound selected from the group consisting of a compound which has a tertiary amine structure and which is dissolved into the organic vehicle, and a compound which has a heterocyclic structure including nitrogen but not including sulfur and which is dissolved into the organic vehicle.Type: ApplicationFiled: March 25, 2004Publication date: September 16, 2004Applicant: Murata Manufacturing Co., Ltd.Inventors: Hiroyuki Kurihara, Ichiro Nakamura, Taketsugu Ogura, Motohiro Shimizu
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Patent number: 6767322Abstract: A cover glass frame as a second frame body mounting thereto a cover glass is fitted onto an objective lens frame, which is a first frame body mounting thereto a tip end lens and an objective lens as optical members, in a manner to be movable in a direction of optical axis, and is fixed after having been adjusted in position in the direction of optical axis. The objective lens frame and the cover glass frame thus fitted and fixed are fitted into and joined to a cylindrical member to constitute an imaging unit, which is then arranged in a tip end portion of an insertion part of an endoscope. Thereby, focus adjustment can be performed on the optical members, which are assembled into the imaging unit, and a tip end side portion of the insertion part of the endoscope can be made small in outer diameter to prevent entry of vapor into the imaging unit even when autoclave sterilization is carried out.Type: GrantFiled: June 6, 2000Date of Patent: July 27, 2004Assignee: Olympus CorporationInventors: Yasuyuki Futatsugi, Masakazu Higuma, Yosuke Yoshimoto, Ichiro Nakamura, Takao Yamaguchi, Takeaki Nakamura, Takahiro Kishi, Yasuhito Kura, Jun Hiroya
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Patent number: 6738125Abstract: It is an object of the invention to provide a liquid crystal display apparatus in which the cell gap is uniform and the display quality is high, and also a method for manufacturing the same. In the liquid crystal display apparatus, a color filter side substrate in which a protrusion is formed by a black mask, and a TFT side substrate in which a recess is formed by a resin film such as an orientation film are bonded together via dispersed spacers therebetween, and a liquid crystal is filled between the substrates. In the resin film such as an orientation film, patterning is performed except a portion which is opposed to the protrusion, thereby forming the recess in the TFT side substrate. The formation of the recess prevents the cell gap from being pushed up even when the dispersed spacers are placed on the protrusion. Even in the case where the substrates are not flat, therefore, the cell gap can be maintained uniform.Type: GrantFiled: December 26, 2000Date of Patent: May 18, 2004Assignee: Sharp Kabushiki KaishaInventors: Naoshi Yamada, Nobuhiro Waka, Ichiro Nakamura, Eiichiro Nishimura, Kazushi Tsuji, Kohichi Toriumi, Chikanori Tsukamura, Okifumi Nakagawa, Takaharu Yamada, Hiroyuki Araki
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Patent number: 6716161Abstract: An endoscope suitable for autoclave sterilization includes an insertion section having an objective lens section disposed at the extreme end thereof for focusing a subject image and an eyepiece section located on the base end side of the inserting section and including at least an eyepiece lens. an image guide fiber is disposed in the bundle for transmitting the subject image in an observation section focused by the objective lens section. An eyepiece lens unit is disposed in the eyepiece section, the eyepiece lens unit causing the eyepiece lens to confront the base end structure whose hermetic seal level is higher than the watertight seal level of the shell of the endoscope. A focus position changing means is disposed to the eyepiece lens unit to change the focus position of the eyepiece lens. The eyepiece section is so constructed and/or assembled that the autoclave sterilization process does not cause water vapor or the like to adversely affect the operability of the eyepiece section.Type: GrantFiled: March 13, 2002Date of Patent: April 6, 2004Assignee: Olympus CorporationInventors: Masakazu Higuma, Yasuyuki Futatsugi, Ichiro Nakamura, Yosuke Yoshimoto, Hidetoshi Saito, Susumu Aono, Takao Yamaguchi, Yutaka Tatsuno, Takahiro Kishi, Yasuhito Kura, Kazutaka Nakatsuchi, Takeaki Nakamura
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Publication number: 20030208022Abstract: An allyl type crosslinking agent for use in production of a super water-absorbent polymer comprising a polymerizable compound having a carbon-carbon double bond or a salt thereof, comprising a linear hydroxypolyallyl ether having at least one hydroxyl groups and at least two allyl groups obtained by allyletherification of hydroxyl groups in a linear polyol compound selected from the group consisting of erythritol, xylitol and sorbitol, is provided. This allyl type crosslinking agent is highly soluble in an aqueous solvent, and can give an excellent super water-absorbent polymer, which cannot be obtained in the prior arts, having high levels of both of water absorptivity under atmospheric pressure and water absorptivity under pressurized conditions are obtained.Type: ApplicationFiled: May 6, 2002Publication date: November 6, 2003Inventors: Shin-Ichiro Nakamura, Yasumi Shimizu, Tohru Matsutomi, Thomas Daniel
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Publication number: 20030208020Abstract: Highly water absorbing polymer comprising a polymerizable compound having carbon-carbon double bonds or a salt thereof, obtainable by using a crosslinking agent comprising a hydroxy polyallyl ether having one or more hydroxy groups and two or more allyl groups.Type: ApplicationFiled: May 6, 2002Publication date: November 6, 2003Inventors: Thomas Daniel, Ulrich Riegel, Shin-Ichiro Nakamura, Yasumi Shimizu, Tohru Matsutomi
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Publication number: 20030201424Abstract: A ceramic slurry composition has a powdered ceramic uniformly dispersed therein without excessive damage thereto. A method for producing a ceramic green sheet using the ceramic slurry composition and a method for producing multilayer ceramic electronic devices are also disclosed. The ceramic slurry composition contains the powdered ceramic, a dispersing agent, a binder and a solvent, in which an anionic dispersing agent is used as the dispersing agent, and the content of the anionic dispersing agent is set to be such that the total acid content thereof corresponds to about 10 to 150% of the total base content of the powdered ceramic. In addition, the powdered ceramic having an average particle diameter of about 0.01 to 1 &mgr;m is used.Type: ApplicationFiled: April 8, 2003Publication date: October 30, 2003Applicant: Murata Manufacturing Co., Ltd.Inventors: Ichiro Nakamura, Hidehiko Tanaka
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Patent number: 6607690Abstract: A ceramic green sheet is manufactured by preparing a support which includes a releasing layer formed on its top surface and has a smoothness that at least a region of the top surface of the support to be coated with a ceramic slurry has substantially no projections having a height of equal to or more than about 1 &mgr;m, and applying a ceramic slurry to the releasing layer of the support, which ceramic slurry contains a ceramic powder dispersed in a medium. This ceramic green sheet has a small thickness of, for example, about 0.3 to 3 &mgr;m, has no depressions or through holes caused by a filler in the support and is excellent in smoothness.Type: GrantFiled: October 5, 2001Date of Patent: August 19, 2003Assignee: Murata Manufacturing Co. LtdInventors: Toshiya Anahara, Ichiro Nakamura
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Patent number: 6589446Abstract: A ceramic slurry composition has a powdered ceramic uniformly dispersed therein without excessive damage thereto. A method for producing a ceramic green sheet using the ceramic slurry composition and a method for producing multilayer ceramic electronic devices are also disclosed. The ceramic slurry composition contains the powdered ceramic, a dispersing agent, a binder and a solvent, in which an anionic dispersing agent is used as the dispersing agent, and the content of the anionic dispersing agent is set to be such that the total acid content thereof corresponds to about 10 to 150% of the total base content of the powdered ceramic. In addition, the powdered ceramic having an average particle diameter of about 0.01 to 1 &mgr;m is used.Type: GrantFiled: October 10, 2000Date of Patent: July 8, 2003Assignee: Murata Manufacturing Co. LtdInventors: Ichiro Nakamura, Hidehiko Tanaka
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Patent number: 6579394Abstract: A method of producing ceramic slurry capable of producing uniformly dispersed ceramic slurry without excessively damaging a ceramic powder, and a method of producing a ceramic slurry composition used for producing a multilayer ceramic electronic part, from which an undissolved binder is precisely removed. Also provided is a method of producing a ceramic green sheet, and a method of producing a multilayer ceramic electronic part. A ceramic powder having an average particle diameter of about 0.01 to 1 &mgr;m is mixed with a dispersion solvent (solvent) and disintegrated by a medium-type dispersion method using a dispersion medium such as balls, beads, or the like to obtain mixed and disintegrated slurry, followed by high-pressure dispersion under a pressure of about 100 kg/cm2 or more.Type: GrantFiled: July 21, 2000Date of Patent: June 17, 2003Assignee: Murata Manufacturing Co., LtdInventors: Ichiro Nakamura, Kazuyuki Naka
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Publication number: 20030089551Abstract: An elevator in which the sheave diameter is reduced and the attendant lowering of the rope life and strength is suppressed to secure safety and reliability. To this end, a rope is used in which a plurality of element wires constituting the wire rope are each covered with resin material and the whole wire rope is covered with resin material, thereby reducing the wear due to slippage between the element wires and the wear due to contact with the sheave, which wear occurs when the rope is entrained around the sheave. When the elevator sheave diameter is reduced, a worried lowering of the rope life can be suppressed or the rope life can be improved. Thus, it is possible to achieve reduction of size and weight of equipment including motors and hoists, installation space saving for elevators, improved safety and reliability of the system by virtue of the increased rope life.Type: ApplicationFiled: April 18, 2002Publication date: May 15, 2003Inventors: Kensuke Kato, Takashi Teramoto, Hiromi Inaba, Hiroshi Nagase, Ichiro Nakamura, Yuuji Yoshitomi
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Patent number: 6547721Abstract: An endoscope capable of being autoclaved in accordance with the present invention includes an insertion unit, an internal endoscope space, and contents. The insertion unit has a soft member, which is made of a soft polymeric material, as at least part of a casing thereof. The internal endoscope space includes the internal space of the insertion unit that is formed at a first sealing level at which the internal space is sealed in a watertight manner relative to an outside. The contents include at least one hermetically sealed unit composed of a plurality of airtight partition members and formed at a second sealing level higher than the first sealing level by joining the meeting portions of the airtight partition members using an airtight joining material. All or part of the airtight partition members is stowed in the internal endoscope space.Type: GrantFiled: August 6, 1999Date of Patent: April 15, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Masakazu Higuma, Yasuyuki Futatsugi, Takeaki Nakamura, Yosuke Yoshimoto, Takahiro Kishi, Yasuhito Kura, Yutaka Tatsuno, Takao Yamaguchi, Susumu Aono, Ichiro Nakamura, Jun Hiroya, Hidetoshi Saito, Kazutaka Nakatsuchi
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Patent number: 6511564Abstract: A method for producing a ceramic slurry used for fabricating a ceramic electronic component includes a mixing and pulverizing step for mixing and pulverizing a ceramic powder having an average particle size of about 0.01 to 1 &mgr;m, a solvent and a dispersant by a dispersion process using a pulverizing medium, such as balls or beads, to obtain a mixed and pulverized slurry; and a high pressure dispersion step for performing high pressure dispersion at a pressure of about 100 kg/cm2 or more after a filtered binder solution is added to the mixed and pulverized slurry to obtain a dispersed slurry (final dispersed slurry), the filtered binder solution being prepared by dissolving a binder in a solvent, followed by filtration. A method for forming a ceramic green sheet and a method for fabricating a monolithic ceramic electronic component using the ceramic slurry are also disclosed.Type: GrantFiled: November 30, 2000Date of Patent: January 28, 2003Assignee: Murata Manufacturing Co. Ltd.Inventors: Ichiro Nakamura, Hiroyuki Kurihara
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Publication number: 20020153513Abstract: A conductive paste having a desired viscosity which does not change with time, and having stable viscosity characteristics, and an electronic component formed using the conductive paste are provided, the conductive paste including a conductive powder, an organic vehicle, at least one compound selected from the group consisting of a compound which has a tertiary amine structure and which is dissolved into the organic vehicle, and a compound which has a heterocyclic structure including nitrogen but not including sulfur and which is dissolved into the organic vehicle.Type: ApplicationFiled: February 19, 2002Publication date: October 24, 2002Applicant: Murata Manufacturing Co., Ltd.Inventors: Hiroyuki Kurihara, Ichiro Nakamura, Taketsugu Ogura, Motohiro Shimizu
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Publication number: 20020125618Abstract: A ceramic green sheet is manufactured by preparing a support which includes a releasing layer formed on its top surface and has a smoothness that at least a region of the top surface of the support to be coated with a ceramic slurry has substantially no projections having a height of equal to or more than about 1 &mgr;m, and applying a ceramic slurry to the releasing layer of the support, which ceramic slurry contains a ceramic powder dispersed in a medium. This ceramic green sheet has a small thickness of, for example, about 0.3 to 3 &mgr;m, has no depressions or through holes caused by a filler in the support and is excellent in smoothness.Type: ApplicationFiled: October 5, 2001Publication date: September 12, 2002Applicant: Murata Manufacturing Co., Ltd.Inventors: Toshiya Anahara, Ichiro Nakamura
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Publication number: 20020128539Abstract: An endoscope suitable for autoclave sterilization includes an insertion section having an objective lens section disposed at the extreme end thereof for focusing a subject image and an eyepiece section located on the base end side of the inserting section and including at least an eyepiece lens. an image guide fiber is disposed in the bundle for transmitting the subject image in an observation section focused by the objective lens section. An eyepiece lens unit is disposed in the eyepiece section, the eyepiece lens unit causing the eyepiece lens to confront the base end structure whose hermetic seal level is higher than the watertight seal level of the shell of the endoscope. A focus position changing means is disposed to the eyepiece lens unit to change the focus position of the eyepiece lens. The eyepiece section is so constructed and/or assembled that the autoclave sterilization process does not cause water vapor or the like to adversely affect the operability of the eyepiece section.Type: ApplicationFiled: March 13, 2002Publication date: September 12, 2002Applicant: Olympus Optical Co., Ltd.Inventors: Masakazu Higuma, Yasuyuki Futatsugi, Ichiro Nakamura, Yosuki Yoshimoto, Hidetoshi Saito, Susumu Aono, Takao Yamaguchi, Yutaka Tatsuno, Takahiro Kishi, Yasuhito Kura, Kazutaka Nakatsuchi, Takeaki Nakamura
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Patent number: 6346287Abstract: A process for producing baked snacks such as crackers and pretzels. By using this process, baked snacks can be easily produced without any restriction in the composition (moisture content, oil content, etc.) or the production procedure for avoiding blistering, as in the conventional processes.Type: GrantFiled: May 12, 2000Date of Patent: February 12, 2002Assignee: Fuji Oil Company, LimitedInventors: Masahisa Ibuki, Ichiro Nakamura
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Publication number: 20010005257Abstract: It is an object of the invention to provide a liquid crystal display apparatus in which the cell gap is uniform and the display quality is high, and also a method for manufacturing the same. In the liquid crystal display apparatus, a color filter side substrate in which a protrusion is formed by a black mask, and a TFT side substrate in which a recess is formed by a resin film such as an orientation film are bonded together via dispersed spacers therebetween, and a liquid crystal is filled between the substrates. In the resin film such as an orientation film, patterning is performed except a portion which is opposed to the protrusion, thereby forming the recess in the TFT side substrate. The formation of the recess prevents the cell gap from being pushed up even when the dispersed spacers are placed on the protrusion. Even in the case where the substrates are not flat, therefore, the cell gap can be maintained uniform.Type: ApplicationFiled: December 26, 2000Publication date: June 28, 2001Inventors: Naoshi Yamada, Nobuhiro Waka, Ichiro Nakamura, Eiichiro Nishimura, Kazushi Tsuji, Kohichi Toriumi, Chikanori Tsukamura, Okifumi Nakagawa, Takaharu Yamada, Hiroyuki Araki