Patents by Inventor Masaaki Tsuzaki
Masaaki Tsuzaki 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: 20150051426Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: October 27, 2014Publication date: February 19, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Publication number: 20150037505Abstract: To provide a lubricant solution which does not impair the global environment, which provides an excellent solubility of a lubricant, which has a sufficient drying property and with which a uniform lubricant coating film can be formed, and a method for producing an article provided with a lubricant coating film, using the lubricant solution. A lubricant solution which is a solution of a lubricant, wherein the solvent is a solvent containing 1,1-dichloro-2,3,3,3-tetrafluoro-1-propene. A method for producing an article provided with a lubricant coating film, which comprises applying the lubricant solution to an object to be coated, and evaporating the solvent to form a lubricant coating film on the object.Type: ApplicationFiled: October 14, 2014Publication date: February 5, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masaaki TSUZAKI, Mai Hashimoto, Hiroaki Mitsuoka
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Publication number: 20140305161Abstract: There is provided a method and an apparatus for efficiently obtaining 2,3,3,3-tetrafluoropropene with low contents of both organic impurities and water. The method for continuously purifying crude 2,3,3,3-tetrafluoropropene containing water and one or more organic impurities, the method including using an apparatus having a distillation column with X stages (3?X, the stage closest to a column top is the first stage) and a unit for cooling and condensing a distillate; supplying the crude 2,3,3,3-tetrafluoropropene to an m-th stage (n+1?m?X, 2?n?X?1) of the distillation column, recirculating at least part of the distillate cooled and condensed in the unit for cooling and condensing to an h-th stage (1?h?n?1) of the distillation column; and taking out a liquid phase part of an n-th stage of the distillation column to obtain a purified product of 2,3,3,3-tetrafluoropropene.Type: ApplicationFiled: June 16, 2014Publication date: October 16, 2014Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Satoshi Kawaguchi, Hirokazu Takagi, Masaaki Tsuzaki, Masato Fukushima, Hidekazu Okamoto
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Publication number: 20110277790Abstract: To provide a process for removing water, which is free from formation of stains due to transfer of an article among dipping sumps, with which the water removal performance will not be decreased even for an article having a complicated shape, which can suppress suspension of water in a water removal solvent in a dipping sump, and which can maintain stable water removal performance continuously for a long period of time only with one dipping sump.Type: ApplicationFiled: July 25, 2011Publication date: November 17, 2011Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Mai Hashimoto, Masaaki Tsuzaki
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Patent number: 7754665Abstract: A lubricant solution and a method for coating a lubricant using a solvent which does not adversely affect the global environment and provides an excellent solubility to a fluorinated or silicon lubricant and which is little influential over a synthetic resin such as an acrylic resin or a polycarbonate resin. A lubricant solution of the present invention comprises a lubricant and a solvent which contains a nonafluorohexane.Type: GrantFiled: December 17, 2004Date of Patent: July 13, 2010Assignee: Asahi Glass Company, LimitedInventors: Masaaki Tsuzaki, Hidekazu Okamoto
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Patent number: 7662192Abstract: The present invention provides a method for cleaning and rinsing an article, with excellent cleaning and rinsing performance. The present invention provides a method for cleaning and rinsing an article, characterized by comprising a cleaning step of contacting an article having a contaminant attached, with a hydrocarbon solvent containing an aromatic hydrocarbon or a glycol ether, and a rinsing step of contacting it with a fluorinated ether, wherein the fluorinated ether is a compound represented by the formula 1: R1—O—R2??Formula 1 wherein each of R1 and R2 which are independent of each other, is a fluorinated alkyl group, wherein the number of fluorine atoms contained in each of R1 and R2 is at least one, and the total number of carbon atoms contained in R1 and R2 is from 4 to 8.Type: GrantFiled: December 27, 2005Date of Patent: February 16, 2010Assignee: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Hidekazu Okamoto, Masaaki Tsuzaki, Maki Shigematsu
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Patent number: 7662764Abstract: To provide a solvent composition capable of removing soils such as dusts and oils attached to the surface of an article made of an acrylic resin or an article coated with an acrylic resin, without damaging it. An azeotrope-like solvent composition comprising from 38 to 41 mass % of (2,2,2-trifluoroethoxy)-1,1,2,2-tetrafluoroethane and from 59 to 62 mass % of perfluorohexane. A mixed solvent composition comprising from 30 to 60 mass % of (2,2,2-trifluoroethoxy)-1,1,2,2-tetrafluoroethane and from 40 to 70 mass % of perfluorohexane.Type: GrantFiled: March 28, 2007Date of Patent: February 16, 2010Assignee: Asahi Glass Company, LimitedInventors: Michiomi Nagase, Masaaki Tsuzaki
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Patent number: 7527697Abstract: To provide a process for removing water, capable of maintaining good water removal performance for a long time continuously and constantly. A process for removing water, which comprises a dipping step of dipping an article having water attached on its surface, in a solvent composition comprising at least one member selected from a hydrochlorofluorocarbon, a hydrofluorocarbon and a hydrofluoroether, and an alcohol, as the essential components, to carry out removal of water, a specific gravity separation step of separating water from the solvent composition containing the water removed from the article, by a specific gravity separation method, and a filtration step of filtering the solvent composition having the water removed in the specific gravity separation step, through a coalescer type filter to further remove water remaining in the solvent composition.Type: GrantFiled: July 5, 2006Date of Patent: May 5, 2009Assignee: Asahi Glass Company, LimitedInventors: Masaaki Tsuzaki, Tsuyoshi Hanada
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Publication number: 20080161221Abstract: To provide a new uninflammable solvent composition which is capable of removing soils such as oils attached to electronic components such as ICs, precision machine components or glass substrates, or flux and dusts attached on e.g. printed boards. A mixed solvent composition comprising from 40 to 90 mass % of 1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane and from 10 to 60 mass % of isopropanol, and an azeotropic solvent composition comprising 62 mass % of 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane and 38 mass % of isopropanol.Type: ApplicationFiled: March 10, 2008Publication date: July 3, 2008Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hidekazu OKAMOTO, Masaaki Tsuzaki
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Publication number: 20070173432Abstract: To provide a solvent composition capable of removing soils such as dusts and oils attached to the surface of an article made of an acrylic resin or an article coated with an acrylic resin, without damaging it. An azeotrope-like solvent composition comprising from 38 to 41 mass % of (2,2,2-trifluoroethoxy)-1,1,2,2-tetrafluoroethane and from 59 to 62 mass % of perfluorohexane. A mixed solvent composition comprising from 30 to 60 mass % of (2,2,2-trifluoroethoxy)-1,1,2,2-tetrafluoroethane and from 40 to 70 mass % of perfluorohexane.Type: ApplicationFiled: March 28, 2007Publication date: July 26, 2007Applicant: ASAHI GLASS CO., LTD.Inventors: Michiomi NAGASE, Masaaki Tsuzaki
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Patent number: 7163645Abstract: A solvent composition comprising 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether in an amount of from 25.0 to 75.0% (by mass, and the same applies hereinafter), trans-1,2-dichloroethylene in an amount of from 15.0 to 74.9%, and a C1-3 alcohol in an amount of from 0.1 to 10.0%, to the total amount of the 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether, the trans-1,2-dichloroethylene and the C1-3 alcohol. The solvent composition of the present invention can remove soil such as flux with a high cleaning performance.Type: GrantFiled: January 3, 2005Date of Patent: January 16, 2007Assignee: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Masaaki Tsuzaki
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Publication number: 20060249179Abstract: To provide a process for removing water, capable of maintaining good water removal performance for a long time continuously and constantly. A process for removing water, which comprises a dipping step of dipping an article having water attached on its surface, in a solvent composition comprising at least one member selected from a hydrochlorofluorocarbon, a hydrofluorocarbon and a hydrofluoroether, and an alcohol, as the essential components, to carry out removal of water, a specific gravity separation step of separating water from the solvent composition containing the water removed from the article, by a specific gravity separation method, and a filtration step of filtering the solvent composition having the water removed in the specific gravity separation step, through a coalescer type filter to further remove water remaining in the solvent composition.Type: ApplicationFiled: July 5, 2006Publication date: November 9, 2006Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masaaki Tsuzaki, Tsuyoshi Hanada
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Publication number: 20060135390Abstract: The present invention provides a method for cleaning and rinsing an article, with excellent cleaning and rinsing performance. The present invention provides a method for cleaning and rinsing an article, characterized by comprising a cleaning step of contacting an article having a contaminant attached, with a hydrocarbon solvent containing an aromatic hydrocarbon or a glycol ether, and a rinsing step of contacting it with a fluorinated ether, wherein the fluorinated ether is a compound represented by the formula 1: R1—O—R2 ??Formula 1 wherein each of R1 and R2 which are independent of each other, is a fluorinated alkyl group, wherein the number of fluorine atoms contained in each of R1 and R2 is at least one, and the total number of carbon atoms contained in R1 and R2 is from 4 to 8.Type: ApplicationFiled: December 27, 2005Publication date: June 22, 2006Applicant: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Hidekazu Okamoto, Masaaki Tsuzaki, Maki Shigematsu
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Patent number: 7053035Abstract: A solvent composition which comprises a fluorinated solvent containing no chlorine atom in its molecule, a hydrocarbon solvent and a glycol ether and which is free from phase separation, wherein the compositional ratio of the fluorinated solvent and the hydrocarbon solvent is a compositional ratio such that a two component mixture composed solely of the fluorinated solvent and the hydrocarbon in such a compositional ratio would separate into two phases.Type: GrantFiled: March 5, 2003Date of Patent: May 30, 2006Assignee: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Masaaki Tsuzaki
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Patent number: 7037380Abstract: A compound such as Alq3 accumulated on the inner surface of a chamber at the time of organic EL device production and wasted is recovered and recycled, whereby the production cost is reduced. The inner surface of a chamber or the surface of components in the chamber to which a compound such as Alq3 has adhered is cleaned with a fluorinated alcohol such as 2,2,3,3,4,4,5,5-octafluoropentanol to recover Alq3.Type: GrantFiled: December 16, 2004Date of Patent: May 2, 2006Assignee: Asahi Glass Company, LimitedInventors: Nobuya Hayashi, Shinichiro Narui, Hidekazu Okamoto, Masaaki Tsuzaki
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Publication number: 20050155632Abstract: A compound such as Alq3 accumulated on the inner surface of a chamber at the time of organic EL device production and wasted is recovered and recycled, whereby the production cost is reduced. The inner surface of a chamber or the surface of components in the chamber to which a compound such as Alq3 has adhered is cleaned with a fluorinated alcohol such as 2,2,3,3,4,4,5,5-octafluoropentanol to recover Alq3.Type: ApplicationFiled: December 16, 2004Publication date: July 21, 2005Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Nobuya Hayashi, Shinichiro Narui, Hidekazu Okamoto, Masaaki Tsuzaki
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Publication number: 20050109988Abstract: A solvent composition comprising 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether in an amount of from 25.0 to 75.0% (by mass, and the same applies hereinafter), trans-1,2-dichloroethylene in an amount of from 15.0 to 74.9%, and a C1-3 alcohol in an amount of from 0.1 to 10.0%, to the total amount of the 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether, the trans-1,2-dichloroethylene and the C1-3 alcohol. The solvent composition of the present invention can remove soil such as flux with a high cleaning performance.Type: ApplicationFiled: January 3, 2005Publication date: May 26, 2005Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Tsuyoshi Hanada, Masaaki Tsuzaki
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Publication number: 20050107271Abstract: A lubricant solution and a method for coating a lubricant using a solvent which does not adversely affect the global environment and provides an excellent solubility to a fluorinated or silicon lubricant and which is little influential over a synthetic resin such as an acrylic resin or a polycarbonate resin. A lubricant solution of the present invention comprises a lubricant and a solvent which contains a nonafluorohexane.Type: ApplicationFiled: December 17, 2004Publication date: May 19, 2005Applicant: Asahi Glass Company, LimitedInventors: Masaaki Tsuzaki, Hidekazu Okamoto
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Patent number: 6740362Abstract: A method for mixing an organic chemical substance with a carrier solvent, wherein the carrier solvent comprises at least one fluorinated solvent A selected from the group consisting of (perfluorohexyloxy)methane and tridecafluorohexane.Type: GrantFiled: November 13, 2002Date of Patent: May 25, 2004Assignee: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Masaaki Tsuzaki
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Publication number: 20030171240Abstract: A solvent composition which comprises a fluorinated solvent containing no chlorine atom in its molecule, a hydrocarbon solvent and a glycol ether and which is free from phase separation, wherein the compositional ratio of the fluorinated solvent and the hydrocarbon solvent is a compositional ratio such that a two component mixture composed solely of the fluorinated solvent and the hydrocarbon in such a compositional ratio would separate into two phases.Type: ApplicationFiled: March 5, 2003Publication date: September 11, 2003Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Tsuyoshi Hanada, Masaaki Tsuzaki