Patents by Inventor Fumio Kawahara
Fumio Kawahara 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: 20100073670Abstract: A technique for an infrared radiation thermometer used for thermography detects measurement abnormality of the infrared radiation thermometer and estimates the causes of the measurement abnormality such as contamination of an objective lens and a malfunction in a mechanism section of the infrared radiation thermometer.Type: ApplicationFiled: March 25, 2008Publication date: March 25, 2010Inventors: Yuichi Furukawa, Shingo Nakamura, Yuji Okada, Fumio Kawahara
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Patent number: 7401769Abstract: A method of manufacturing a gas spring including the steps of fitting and inserting a first seal member, an annular space member, a second seal member, and a rod guide, to an outer periphery of a piston rod in accordance with this order from a side of a piston, a step of providing a piston rod assembly in which a lubricant is previously injected, in an annular chamber defined among the first seal member, the space member and the second seal member, and a step of charging a pressurized gas into an inner portion of a cylinder from an opening portion of the cylinder under a sealed state, and thereafter pressing the rod guide fitted and inserted to the piston rod, thereby inserting the piston rod assembly into the inner portion of the cylinder from the opening portion of the cylinder and fixing the rod guide to the cylinder.Type: GrantFiled: June 11, 2003Date of Patent: July 22, 2008Assignee: Showa CorporationInventor: Fumio Kawahara
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Patent number: 6858568Abstract: Lubricants are taught that can quickly and easily form a lubricating layer on a metal surface of a metal before plastic processing. Such lubricants preferably include a primary lubricating agent or component having a bridge complex that satisfies the following conditions: (1) the complex contains at least two central metal atoms; (2) at least one first multidentate ligand forms a bridge between two central metal atoms; and (3) at least one second multidentate ligand is bound to at least one central metal atom and has at least one coordinating atom that can coordinate with metal atoms, but which is not coordinated with any of the central metal atoms or is only partially coordinated with at least one of those central metal atoms. A third multidentate ligand is preferably also bound to one of the central metal atoms and may preferably include at least two sulfur atoms that are coordinated to the central metal atom.Type: GrantFiled: November 15, 2001Date of Patent: February 22, 2005Assignee: MEC International CorporationInventors: Heijiro Ojima, Fumio Kawahara, Mitsuru Tomono
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Patent number: 6852678Abstract: An aqueous lubricant is provided which by simple application onto metal surfaces forms lubricating films required for heavy working of metals, and which contains no oil. The aqueous lubricant is prepared by suspending or dispersing a metal chelate compound in water with a surfactant or the like. The metal chelate compound has a polydentate or multidentate chelate ligand, in which at least one of the coordinating atoms is sulfur, coordinated to the coordination site of at least one metal species selected from among zinc, manganese, iron, molybdenum, tin and antimony. When applied onto metal surfaces, the aqueous lubricant forms effective lubricating films on the metal surfaces. The lubricating films contain sulfur as coordinating atoms and therefore, extreme pressure produces sulfur radicals through decomposition by tribo-chemical reactions. The sulfur radicals are highly reactive and react rapidly with the metal surface to produce metal sulfides with a lubricating effect.Type: GrantFiled: November 19, 2001Date of Patent: February 8, 2005Assignees: MEC International Corporation, Toyota Jidosha Kabushiki KaishaInventors: Heijiro Ojima, Masahiko Takeuchi, Fumio Ikesue, Noritoshi Kaskimura, Fumio Kawahara, Mitsuru Tomono
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Publication number: 20040100006Abstract: A method of manufacturing a gas spring including the steps of fitting and inserting a first seal member, an annular space member, a second seal member, and a rod guide, to an outer periphery of a piston rod in accordance with this order from a side of a piston, a step of providing a piston rod assembly in which a lubricant is previously injected, in an annular chamber defined among the first seal member, the space member and the second seal member, and a step of charging a pressurized gas into an inner portion of a cylinder from an opening portion of the cylinder under a sealed state, and thereafter pressing the rod guide fitted and inserted to the piston rod, thereby inserting the piston rod assembly into the inner portion of the cylinder from the opening portion of the cylinder and fixing the rod guide to the cylinder.Type: ApplicationFiled: June 11, 2003Publication date: May 27, 2004Inventor: Fumio Kawahara
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Publication number: 20020123435Abstract: Lubricants are taught that can quickly and easily form a lubricating layer on a metal surface of a metal before plastic processing. Such lubricants preferably include a primary lubricating agent or component having a bridge complex that satisfies the following conditions: (1) the complex contains at least two central metal atoms; (2) at least one first multidentate ligand forms a bridge between two central metal atoms; and (3) at least one second multidentate ligand is bound to at least one central metal atom and has at least one coordinating atom that can coordinate with metal atoms, but which is not coordinated with any of the central metal atoms or is only partially coordinated with at least one of those central metal atoms. A third multidentate ligand is preferably also bound to one of the central metal atoms and may preferably include at least two sulfur atoms that are coordinated to the central metal atom.Type: ApplicationFiled: November 15, 2001Publication date: September 5, 2002Applicant: MEC International CorporationInventors: Heijiro Ojima, Fumio Kawahara, Mitsuru Tomono
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Publication number: 20020111278Abstract: An aqueous lubricant is provided which by simple application onto metal surfaces forms lubricating films required for heavy working of metals, and which contains no oil. The aqueous lubricant is prepared by suspending or dispersing a metal chelate compound in water with a surfactant or the like. The metal chelate compound has a polydentate or multidentate chelate ligand, in which at least one of the coordinating atoms is sulfur, coordinated to the coordination site of at least one metal species selected from among zinc, manganese, iron, molybdenum, tin and antimony. When applied onto metal surfaces, the aqueous lubricant forms effective lubricating films on the metal surfaces. The lubricating films contain sulfur as coordinating atoms and therefore, extreme pressure produces sulfur radicals through decomposition by tribo-chemical reactions. The sulfur radicals are highly reactive and react rapidly with the metal surface to produce metal sulfides with a lubricating effect.Type: ApplicationFiled: November 19, 2001Publication date: August 15, 2002Inventors: Heijiro Ojima, Masahiko Takeuchi, Fumio Ikesue, Noritoshi Kashimura, Fumio Kawahara, Mitsuru Tomono
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Patent number: 5780301Abstract: Disclosed is a synthetic medium with PDGF, vitronectin, IL-1.beta. and BSA added to Eagle's minimum essential medium or medium with transferrin, insulin, progesterone and putrescine further added thereto. When cultivating the postnatal central neurons using the inventive medium, there are effects such that good attachment to substrate, extension of neuritic processes and maintenance of survival are achieved, that more stable sure cultivation becomes possible as well over the astrocyte-conditioned medium used hitherto, and the like.Type: GrantFiled: February 13, 1995Date of Patent: July 14, 1998Assignee: Kyorin Pharmaceutical Co., Ltd.Inventors: Hiroshi Saito, Hiroshi Katsuki, Fumio Kawahara
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Patent number: 5693214Abstract: An apparatus for separating an aqueous colloidal solution into water and agglomerate of colloidal particles by applying a high frequency voltage to the aqueous colloidal solution comprises a tank accommodating the aqueous colloidal solution, and at least one pair of electrodes disposed in the tank. The electrodes is configured such that lines of electric force are locally concentrated when the voltage is applied to said solution.Type: GrantFiled: December 20, 1996Date of Patent: December 2, 1997Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Corp.Inventors: Naoki Abe, Fumio Kawahara, Takao Ohara
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Patent number: 5665243Abstract: Disclosed herein is a technique of removing metal contained in a solution through chelation, which makes it possible to preclude undesired aggregation and permit effective aggregation through an aggregating process. A surface active agent containing a hydrophobic group, a hydrophilic group and a chelating group is added to the solution to be processed, and subsequently an aggregating process is carried out. The chelating group chelates metal, the hydrophilic group prevents undesired aggregation, and the hydrophobic group is effectively aggregated in the aggregating process. Various uses are possible by selecting the charge of ligand.Type: GrantFiled: August 30, 1996Date of Patent: September 9, 1997Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Corporation, Heijiro OjimaInventors: Naoki Abe, Koji Mizuno, Masayuki Sumiyoshi, Katsuya Murakami, Kojiro Murayama, Koichi Sugiura, Fumio Kawahara, Mitsuru Tomoto, Heijiro Ojima
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Patent number: 5650056Abstract: An apparatus for removing metal contained in a solution through chelation which includes a means for adding a surface active agent containing a hydrophobic group, a hydrophilic group and a chelating group to a metal containing solution held within a metal solution accommodating means. An electric field applying means is adapted to apply an electric field to the solution containing means and further means is provided for separating an aggregate from the metal contained solution.Type: GrantFiled: August 30, 1996Date of Patent: July 22, 1997Assignees: Toyota Jidosha Kabushiki Kaisha, Mec International Corporation, Heijiro OjimaInventors: Naoki Abe, Koji Mizuno, Masayuki Sumiyoshi, Katsuya Murakami, Kojiro Murayama, Koichi Sugiura, Fumio Kawahara, Mitsuru Tomono, Heijiro Ojima
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Patent number: 5587060Abstract: Disclosed herein is a technique of removing metal contained in a solution through chelation, which makes it possible to preclude undesired aggregation and permit effective aggregation through an aggregating process. A surface active agent containing a hydrophobic group, a hydrophilic group and a chelating group is added to the solution to be processed, and subsequently an aggregating process is carried out. The chelating group chelates metal, the hydrophilic group prevents undesired aggregation, and the hydrophobic group is effectively aggregated in the aggregating process. Various uses are possible by selecting the charge of ligand.Type: GrantFiled: September 12, 1995Date of Patent: December 24, 1996Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Corporation, Heijiro OjimaInventors: Naoki Abe, Koji Mizuno, Masayuki Sumiyoshi, Katsuya Murakami, Kojiro Murayama, Koichi Sugiura, Fumio Kawahara, Mitsuru Tomono, Heijiro Ojima
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Patent number: 5478099Abstract: A bicycle wheel suspension is disclosed, which comprises two front fork assemblies capable of being elongated and contracted, each having an inner and an outer tube and slidable relative to each other. The lower ends of these front fork assemblies can support an axle. The front fork assemblies include respective attenuating mechanisms and. The attenuating mechanism in one front fork assembly can adjust the attenuating force during the contraction stroke of this front fork assembly. The attenuating mechanism in the other front fork assembly can adjust the attenuating force during the elongation stroke of this front fork assembly.Type: GrantFiled: June 7, 1995Date of Patent: December 26, 1995Assignee: Showa CorporationInventor: Fumio Kawahara
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Patent number: 5449787Abstract: N,N'-disubstituted amide derivatives having potent and selective antagonistic action to 5-HT.sub.3 receptor have been developed by the present invention, which provides antagonistic drugs to 5-HT.sub.3 receptor containing novel N,N'-disubstituted amide derivatives represented by a general formula [I] ##STR1## (wherein R.sub.1 denotes a hydrogen atom or lower alkyl group, R.sub.2 and R.sub.3, which may be identical or different, denote respectively a hydrogen atom, lower alkyl group, lower alkenyl group, nonsubstituted or substituted aryl-lower alkyl group, acyl group or lower alkoxycarbonyl group, R.sub.4 denotes a hydrogen atom, lower alkyl group or lower alkoxy group, A denotes CH or N, and n denotes 1), their hydrates or acid addition salts.Type: GrantFiled: September 6, 1994Date of Patent: September 12, 1995Assignee: Kyorin Pharmaceutical Co., Ltd.Inventors: Mitsutomo Miyashita, Toshio Maeda, Fumio Kawahara, Fukutaro Taga
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Patent number: 5338421Abstract: A method of separating an aqueous colloidal solution by agglomeration into water and agglomerate of colloidal particles by applying voltage to the aqueous colloidal solution to promote the agglomeration of colloidal particles. The frequency of the voltage to be applied to the aqueous colloidal solution is increased to about 10 kHz to improve efficiency of agglomeration and suppress electrolysis of water. As the frequency is increased, hydrogen is generated earlier than the reaction of oxygen generated by the electrolysis of water with the colloidal particles, thus not oxidizing the colloidal particles. Further, as the frequency is increased, the colloidal particles tend to obtain a greater oscillation energy, thus facilitating the agglomeration thereof.Type: GrantFiled: August 2, 1993Date of Patent: August 16, 1994Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Corporation, Zeotek LRC CorporationInventors: Naoki Abe, Fumio Kawahara, Noboru Inoue
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Patent number: 4472543Abstract: A flame retardant diaphragm for speakers, etc. comprises an admixture of natural fibers and inorganic fibers. The admixture is impregnated with a thermosetting resin and an organic bromine compound, and heat-treated under pressure. The organic bromine compound acts as a flame retarder.Type: GrantFiled: May 26, 1982Date of Patent: September 18, 1984Assignees: Pioneer Electronic Corporation, Mogami Denki Kabushiki KaishaInventors: Kazuo Tsuchiya, Fumio Kawahara, Shigeru Watanabe
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Patent number: 4451609Abstract: A flame-retarded speaker diaphragm is prepared by making a cone from cellulose fibers, impregnating the cellulosic cone with a solution of a trimethylol melamine monomer, an organic phosphorus- and nitrogen-containing compound, and a trialkyl amine catalyst in an alcohol solvent, and heating the impregnated cone until the solvent is removed and the melamine resin is cured. Flame retardancy is imparted to the cellulose cone-shaped diaphragm without the sacrifice of its frequency response.Type: GrantFiled: June 24, 1982Date of Patent: May 29, 1984Assignees: Pioneer Electronic Corporation, Mogami Denki Kabushiki KaishaInventors: Fumio Kawahara, Masanori Takahashi, Katsuyoshi Kumagai