Patents by Inventor Katsumi Ichitani
Katsumi Ichitani 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: 11479737Abstract: A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and an alkylene glycol ether (B), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a solubility in 100 mL of water at 20° C. of 2.0 g/100 mL-H2O or less and a molecular weight per 1 mol of 1,000 g/mol or less.Type: GrantFiled: March 31, 2017Date of Patent: October 25, 2022Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Katsumi Ichitani, Rikki Homma
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Patent number: 11180817Abstract: Provided is a water-based quenching liquid composition which is slow in a cooling rate and is able to suppress quenching crack. The water-based quenching liquid composition is one containing water (A), a linear polyalkylene glycol compound (B), and a branched polyhydric alcohol alkylene oxide adduct (C), wherein the linear polyalkylene glycol compound (B) has a mass average molecular weight of 10,000 or more, and the branched polyhydric alcohol alkylene oxide adduct (C) is a mixed adduct of alkylene oxides having 2 to 3 carbon atoms and has a mass average molecular weight of 10,000 or more.Type: GrantFiled: December 22, 2017Date of Patent: November 23, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Takashi Kondo, Rikki Homma, Katsumi Ichitani
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Patent number: 11015230Abstract: A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and at least one kind selected from an alkylene glycol ether (B) and a monocarboxylic acid (C), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a boiling point of 200° C. or more and a molecular weight per 1 mol of 1,000 g/mol or less.Type: GrantFiled: March 31, 2017Date of Patent: May 25, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Katsumi Ichitani, Rikki Homma
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Publication number: 20200354648Abstract: A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and an alkylene glycol ether (B), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a solubility in 100 mL of water at 20° C. of 2.0 g/100 mL-H2O or less and a molecular weight per 1 mol of 1,000 g/mol or less.Type: ApplicationFiled: March 31, 2017Publication date: November 12, 2020Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Katsumi ICHITANI, Rikki HOMMA
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Patent number: 10731099Abstract: A heat treatment oil composition is provided that suppresses the decrease of luster in a heat treatment of a metal material, and is capable of suppressing the increase of the number of second (characteristic number of second) until reaching the temperature where the vapor blanket stage ends with the lapse of time and the decrease of the kinetic viscosity with the lapse of time. The heat treatment oil composition contains (A) a base oil and (B) a vapor blanket breaking agent selected from one or more of a petroleum resin, a terpene resin, rosin, and derivatives thereof.Type: GrantFiled: February 16, 2016Date of Patent: August 4, 2020Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Hideaki Hattori, Katsumi Ichitani
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Publication number: 20190292614Abstract: Provided is a water-based quenching liquid composition which is slow in a cooling rate and is able to suppress quenching crack. The water-based quenching liquid composition is one containing water (A), a linear polyalkylene glycol compound (B), and a branched polyhydric alcohol alkylene oxide adduct (C), wherein the linear polyalkylene glycol compound (B) has a mass average molecular weight of 10,000 or more, and the branched polyhydric alcohol alkylene oxide adduct (C) is a mixed adduct of alkylene oxides having 2 to 3 carbon atoms and has a mass average molecular weight of 10,000 or more.Type: ApplicationFiled: December 22, 2017Publication date: September 26, 2019Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Takashi KONDO, Rikki HOMMA, Katsumi ICHITANI
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Patent number: 10421924Abstract: Disclosed herein is a method of using a water-based coolant for quenching or cutting a metal material. The water-based coolant is formed of: water; at least one inorganic acid salt selected from the group consisting of a carbonate, a hydrogen carbonate, a sesquicarbonate, a phosphate, a borate, a molybdate and a tungstate; a metal corrosion inhibitor; and optionally at least one of a bactericide, a water-soluble rust inhibitor, an antioxidant and a detergent dispersant.Type: GrantFiled: May 12, 2017Date of Patent: September 24, 2019Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Mayu Hasegawa, Masahisa Goto, Katsumi Ichitani, Kenro Noguchi
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Publication number: 20190100815Abstract: A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and at least one kind selected from an alkylene glycol ether (B) and a monocarboxylic acid (C), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a boiling point of 200° C. or more and a molecular weight per 1 mol of 1,000 g/mol or less.Type: ApplicationFiled: March 31, 2017Publication date: April 4, 2019Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Katsumi ICHITANI, Rikki HOMMA
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Publication number: 20180023022Abstract: A heat treatment oil composition is provided that suppresses the decrease of luster in a heat treatment of a metal material, and is capable of suppressing the increase of the number of second (characteristic number of second) until reaching the temperature where the vapor blanket stage ends with the lapse of time and the decrease of the kinetic viscosity with the lapse of time. The heat treatment oil composition contains (A) a base oil and (B) a vapor blanket breaking agent selected from one or more of a petroleum resin, a terpene resin, rosin, and derivatives thereof.Type: ApplicationFiled: February 16, 2016Publication date: January 25, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Hideaki HATTORI, Katsumi ICHITANI
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Publication number: 20180023021Abstract: A heat treatment oil composition is provided that is capable of reducing the fluctuation in cooling capability among components subjected to mass quenching while retaining a cooling capability equivalent to the No. 1 oil of Class 2 of JIS K2242:2012 in a heat treatment of a metal material, such as quenching, and is capable of suppressing deterioration in cooling capability thereof with the lapse of time under repetition of the heat treatment. The heat treatment oil composition contains (A) a base oil and (B) at least one selected from a petroleum resin and/or a derivative of a petroleum resin, and has a characteristic time obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:2012 of 1.00 second or less and a 300° C. number of second, which is a cooling time from 800° C. to 300° C. in the cooling curve, of 6.00 seconds or more and 14.50 seconds or less.Type: ApplicationFiled: January 29, 2016Publication date: January 25, 2018Applicant: IDEMITSU KOSAN CO., LTDInventors: Hideaki HATTORI, Katsumi ICHITANI
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Publication number: 20170247633Abstract: Disclosed herein is a method of using a water-based coolant for quenching or cutting a metal material. The water-based coolant is formed of: water; at least one inorganic acid salt selected from the group consisting of a carbonate, a hydrogen carbonate, a sesquicarbonate, a phosphate, a borate, a molybdate and a tungstate; a metal corrosion inhibitor; and optionally at least one of a bactericide, a water-soluble rust inhibitor, an antioxidant and a detergent dispersant.Type: ApplicationFiled: May 12, 2017Publication date: August 31, 2017Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Mayu HASEGAWA, Masahisa GOTO, Katsumi ICHITANI, Kenro NOGUCHI
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Patent number: 9637804Abstract: A heat-treatment oil composition contains (A) a first base oil with a kinematic viscosity at 40 degrees C. in a range of 5 mm2/s to 60 mm2/s in an amount of 50 mass % to 95 mass % of a total amount of the composition, (B) a second base oil with a kinematic viscosity at 40 degrees C. of 300 mm2/s or more in an amount of 5 mass % to 50 mass %, and (C) an alpha-olefin copolymer. The heat-treatment oil composition according to the invention can reduce distortion unevenness and hardness unevenness accompanying mass-quenching.Type: GrantFiled: March 14, 2013Date of Patent: May 2, 2017Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Kenro Noguchi, Masayuki Kato, Katsumi Ichitani, Masahiro Kobessho, Masahiro Yamada, Norihiro Takasaki
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Publication number: 20150315512Abstract: A water-based coolant contains: at least one inorganic acid salt selected from among carbonate, hydrogen carbonate, sesquicarbonate, phosphate, borate, molybdate and tungstate; and a metal corrosion inhibitor. The water-based coolant is excellent in cooling performance and unlikely to cause corrosion of a metal material to be cooled. Therefore, the water-based coolant is suitably usable as a quenchant or a cutting oil.Type: ApplicationFiled: December 10, 2013Publication date: November 5, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Mayu HASEGAWA, Masahisa GOTO, Katsumi ICHITANI, Kenro NOGUCHI
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Patent number: 9023234Abstract: An aqueous heat treatment liquid composition exhibiting a favorable rust resistance with a high cooling capability and a high uneven-cooling resistance is provided. The aqueous heat treatment liquid composition contains a hyperbranched polyglycerol. A mass average absolute molecular weight of the aqueous heat treatment liquid composition is preferably in a range of 5,000 to 500,000. When the aqueous heat treatment liquid composition is used for quenching of a metallic component, the aqueous heat treatment liquid composition can exhibit a favorable rust resistance with a high cooling capability and a high uneven-cooling resistance.Type: GrantFiled: February 22, 2011Date of Patent: May 5, 2015Assignee: Idemitsu Kosan Co., Ltd.Inventors: Katsumi Ichitani, Fumiaki Takagi, Masami Yamanaka
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Publication number: 20150013843Abstract: A heat-treatment oil composition contains (A) a first base oil with a kinematic viscosity at 40 degrees C. in a range of 5 mm2/s to 60 mm2/s in an amount of 50 mass % to 95 mass % of a total amount of the composition, (B) a second base oil with a kinematic viscosity at 40 degrees C. of 300 mm2/s or more in an amount of 5 mass % to 50 mass %, and (C) an alpha-olefin copolymer. The heat-treatment oil composition according to the invention can reduce distortion unevenness and hardness unevenness accompanying mass-quenching.Type: ApplicationFiled: March 14, 2013Publication date: January 15, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Kenro Noguchi, Masayuki Kato, Katsumi Ichitani, Masahiro Kobessho, Masahiro Yamada, Norihiro Takasaki
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Publication number: 20150000710Abstract: A water-based coolant contains at least one inorganic acid salt of phosphate, phosphite, sulfate, sulfite, borate, molybdate, tungstate, carbonate, hydrogen carbonate and sesquicarbonate. Since the water-based coolant of the invention exhibits a high cooling capability but does not easily corrode a metallic material (a cooling object), the water-based coolant of the invention is suitable as a quenching oil or a cutting oil for the metallic material.Type: ApplicationFiled: February 27, 2013Publication date: January 1, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Mayu Hasegawa, Masahisa Goto, Katsumi Ichitani, Kenro Noguchi
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Publication number: 20130001461Abstract: An aqueous heat treatment liquid composition exhibiting a favorable rust resistance with a high cooling capability and a high uneven-cooling resistance is provided. The aqueous heat treatment liquid composition contains a hyperbranched polyglycerol. A mass average absolute molecular weight of the aqueous heat treatment liquid composition is preferably in a range of 5,000 to 500,000. When the aqueous heat treatment liquid composition is used for quenching of a metallic component, the aqueous heat treatment liquid composition can exhibit a favorable rust resistance with a high cooling capability and a high uneven-cooling resistance.Type: ApplicationFiled: February 22, 2011Publication date: January 3, 2013Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Katsumi Ichitani, Fumiaki Takagi, Masami Yamanaka
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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: 7841766Abstract: A metal surface temperature measuring device includes: a container to contain a coolant; a measurement target; a heater to heat the measurement target; a moving mechanism for moving the measurement target; and a thermometer to measure the surface temperature of the measurement target. A main body of the measurement target is formed of silver or copper, and a surface of the main body is coated with a thin film of pure iron or an iron alloy at a thickness of 1 to 100 ?m. Further, at least the container, the heater, and the measurement target are disposed in a chamber of an inert gas atmosphere.Type: GrantFiled: March 14, 2006Date of Patent: November 30, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hideo Kanamori, Katsumi Ichitani