Patents by Inventor Makoto Takeishi
Makoto Takeishi 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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Patent number: 7993473Abstract: The heat-treating oil composition of the present invention is characterized by comprising a mixed base oil containing a low-boiling base oil having a 5% distillation temperature of from 300 to 400° C. in an amount of not less than 5% by mass but less than 50% by mass, and a high-boiling base oil having a 5% distillation temperature of 500° C. or higher in an amount of more than 50% by mass but not more than 95% by mass. There is provided a quenching oil composition capable of exhibiting a less fluctuation in hardness or quenching distortion of a metal material treated therewith even when a large number of the metal materials are quenched therewith at the same time.Type: GrantFiled: June 26, 2006Date of Patent: August 9, 2011Assignees: Idemitsu Kosan Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Masahiro Kobessho, Katsumi Ichitani, Makoto Takeishi, Yasuyuki Fujiwara, Yoshimi Aoyama
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Patent number: 7851422Abstract: A quenching oil for reduced pressure quenching which comprises a base oil having a kinematic viscosity at 40° C. of 40 mm2/s or more and a vapor blanket breaking agent; and a method for quenching wherein the quenching oil is used and quenching is carried out while adjusting the pressure on the surface of the oil. The method allows the achievement of cooling characteristics over a wide range from those conventionally achieved by a cold oil to those by a hot oil, by the use of a single quenching oil.Type: GrantFiled: March 9, 2005Date of Patent: December 14, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Katsumi Ichitani, Makoto Takeishi
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Patent number: 7503985Abstract: Provided is a quenching method capable of producing quenched articles having little distortion and having a desired hardness. The quenching method with a coolant is specifically so controlled that the surface of the quenching bath is kept under pressure all the time throughout the step of cooling the articles being processed therein.Type: GrantFiled: December 5, 2002Date of Patent: March 17, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Katsumi Ichitani, Makoto Takeishi
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Publication number: 20090056834Abstract: The heat-treating oil composition of the present invention is characterized by comprising a mixed base oil containing a low-boiling base oil having a 5% distillation temperature of from 300 to 400° C. in an amount of not less than 5% by mass but less than 50% by mass, and a high-boiling base oil having a 5% distillation temperature of 500° C. or higher in an amount of more than 50% by mass but not more than 95% by mass. There is provided a quenching oil composition capable of exhibiting a less fluctuation in hardness or quenching distortion of a metal material treated therewith even when a large number of the metal materials are quenched therewith at the same time.Type: ApplicationFiled: June 26, 2006Publication date: March 5, 2009Applicants: Idemitsu Kosan Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Masahiro Kobessho, Katsumi Ichitani, Makoto Takeishi, Yasuyuki Fujiwara, Yoshimi Aoyama
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Patent number: 7347927Abstract: A heat treatment oil composition comprising a mixed base oil containing 50-95 weight % of (A) a low viscosity base oil with kinematic viscosity of 5-60 mm2/s at 40° C., and 50-5 weight % of (B) a high viscosity base oil with kinematic viscosity of more than 300 mm2/s at 40° C. is proposed. By the use of this heat treatment oil composition for hardening of metallic material, it enables to generate little cooling unevenness, to assure the hardness of hardening processed product, and to reduce quenching distortion.Type: GrantFiled: April 26, 2002Date of Patent: March 25, 2008Assignee: Idemitsu Kosan Co., Ltd.Inventors: Katsumi Ichitani, Makoto Takeishi
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Publication number: 20070191241Abstract: A quenching oil for reduced pressure quenching which comprises a base oil having a kinematic viscosity at 40° C. of 40 mm2/s or more and a vapor blanket breaking agent; and a method for quenching wherein the quenching oil is used and quenching is carried out while adjusting the pressure on the surface of the oil. The method allows the achievement of cooling characteristics over a wide range from those conventionally achieved by a cold oil to those by a hot oil, by the use of a single quenching oil.Type: ApplicationFiled: March 9, 2005Publication date: August 16, 2007Applicant: Idemitsu Kosan Co., Ltd.Inventors: Katsumi Ichitani, Makoto Takeishi
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Publication number: 20030201205Abstract: A heat treatment oil composition comprising a mixed base oil containing 50-95 weight % of (A) a low viscosity base oil with kinematic viscosity of 5-60 mm2/s at 40° C., and 50-5 weight % of (B) a high viscosity base oil with kinematic viscosity of more than 300 mm2/s at 40° C. is proposed. By the use of this heat treatment oil composition for hardening of metallic material, it enables to generate little cooling unevenness, to assure the hardness of hardening processed product, and to reduce quenching distortion.Type: ApplicationFiled: December 19, 2002Publication date: October 30, 2003Inventors: Katsumi Ichitani, Makoto Takeishi
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Publication number: 20030136484Abstract: Provided is a quenching method capable of producing quenched articles having little distortion and having a desired hardness. The quenching method with a coolant is specifically so controlled that the surface of the quenching bath is kept under pressure all the time throughout the step of cooling the articles being processed therein.Type: ApplicationFiled: December 5, 2002Publication date: July 24, 2003Applicant: Idemitsu Kosan Co., Ltd.Inventors: Katsumi Ichitani, Makoto Takeishi
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Patent number: 6403225Abstract: The invention relates to an article superior in slipping a waterdrop down a surface of the article. The article has a substrate; and a functional layer formed on a surface of the substrate. The functional layer is chemically bonded to the surface of the substrate through siloxane-bonding. The article is prepared by a method including: (a) dissolving in a solvent (1) a silicone that is one of a first silicone having at an end a hydrolyzable functional group and a second silicone having at an end a hydrolyzable functional group and at the other end a fluoroalkyl group, (2) an acid, and (3) water, thereby to prepare a mixed liquid; (b) applying the mixed liquid to the surface of the substrate, thereby to form thereon a precursory layer; and (c) drying the precursory layer into the functional layer. In the preparation of the article, a silica precursor sol is optionally added to the mixed liquid.Type: GrantFiled: November 10, 1999Date of Patent: June 11, 2002Assignees: Nissan Motor Co., Ltd.Inventors: Ikuo Narisawa, Makoto Takeishi, Heihachi Murase, Toshihiro Takekawa, Yasuaki Kai, Tetsuro Tayu
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Patent number: 6114446Abstract: The present invention relates to a polymer composition capable of forming a super-hydrophobic surface which is difficult to be wetted with water and from which an adhered waterdrop can easily slide down comprising(A) a reaction product formed by a reaction of(a) a hydroxyl group-containing fluoropolymer obtained by copolymerizing a fluoroolefin, a hydroxyl group-containing vinyl monomer and another unsaturated monomer capable of coploymerizing with them,(b) an epoxy-terminated siloxane polymer represented by the formula ##STR1## wherein m is a number of 6-300 and n is a number of 0-6, at the equivalent ratio of the hydroxyl groups of the fluoropolymer (a) to the epoxy groups of the siloxane polymer (b) of 1/0.05 to 1/0.8, in the presence of(c) a sulphonic acid compound, and(B) a polyisocyanate compound, which may be blocked, or a melamine type crosslinking agent.Type: GrantFiled: June 25, 1999Date of Patent: September 5, 2000Assignees: Kansai Paint Co., Ltd., Ikuo NarisawaInventors: Ikuo Narisawa, Makoto Takeishi, Heihachi Murase
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Patent number: 5304558Abstract: Novel diphenylmethyl piperazine derivatives of this invention have a chemical structure represented by the following Formula [I]: ##STR1## wherein R represents ##STR2## The compounds have an effect of inhibiting the overcontraction and overextension of the myocardium without being accompanied by a myocardium-inhibiting effect. By using the novel diphenylmethyl piperazine derivatives as an effective ingredient, it is possible to obtain a myocardial necrosis inhibitor which can protect against myocardial necrosis, and a drug for the treatment and prevention of acute myocardial infarction.Type: GrantFiled: March 2, 1993Date of Patent: April 19, 1994Assignee: Kirin Brewery Co., Ltd.Inventors: Noboru Kaneko, Makoto Takeishi, Tatsushi Oosawa, Kouji Akimoto, Hideo Oota, Tatsuo Nakajima