Patents by Inventor Ken Kawata
Ken Kawata 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).
-
Patent number: 10835895Abstract: An acetylacetone derivative is useful for capturing a metal element by complexation. A convenient and very versatile synthesis method can be used to synthesize the derivative.Type: GrantFiled: March 30, 2017Date of Patent: November 17, 2020Assignee: THE UNIVERSITY OF TOKYOInventors: Takashi Kato, Ken Kawata
-
Publication number: 20190111418Abstract: An acetylacetone derivative is useful for capturing a metal element by complexation. A convenient and very versatile synthesis method can be used to synthesize the derivative.Type: ApplicationFiled: March 30, 2017Publication date: April 18, 2019Inventors: Takashi KATO, Ken KAWATA
-
Patent number: 9255058Abstract: Disclosed is a complex alcohol ester composition comprising a polyester in which at least two molecules of a polyol represented by a formula I: R(OH)n (wherein R represents an n-valent aliphatic, alicyclic or aromatic group, one or more carbon atoms not adjacent to each other in R may be individually substituted with an oxygen atom, and n indicates an integer of 2 or more) are linked through at least two ester bonds via at least one molecule of a polybasic acid, and at least a part of the non-linked side chain ends of the polyol have a group represented by a formula II: (AO)kR2 (wherein R2 represents a hydrocarbon group, A represents a divalent linking group, and k indicates an integer) via a polybasic acid. The complex alcohol ester composition can be used a lubricant agent.Type: GrantFiled: September 27, 2010Date of Patent: February 9, 2016Assignee: FUJIFILM CorporationInventors: Ken Kawata, Akio Tamura, Saisuke Watanabe
-
Patent number: 9145432Abstract: A compound represented by following formula (I): A-L-{D1-(E)q-D2-(B)m—Z1—R}p. In the formula, A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfonyloxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk)-) or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divalent group; and R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group.Type: GrantFiled: September 6, 2013Date of Patent: September 29, 2015Assignee: FUJIFILM CorporationInventors: Saisuke Watanabe, Hiyoku Nakata, Ken Kawata
-
Patent number: 9117475Abstract: [Problem] Provided is a novel lubricant composition that is useful as a material of a lubricating layer of a magnetic recording medium. [Means for Resolution] The lubricant composition contains at least one kind of compound represented by the following Formula (1). In the formula, X represents a cyclic group that may be substituted, and Y represents a single bond or a linking group having a valency of 2 or more. Here, at least one of X and Y includes 1 or more polar groups such as a hydroxyl group; Z represents a linking group having a valency of 2 or more and constituted with a carbon atom (C), a fluorine atom (F), and 1 or 2 kinds of arbitrary atoms (here, a hydrogen atom is excluded); n represents a real number of 1 to 10; m represents a real number of 0 to 1; and s and t independently represent a real number of 1 or greater.Type: GrantFiled: March 24, 2010Date of Patent: August 25, 2015Assignee: FUJIFILM CorporationInventors: Hiyoku Nakata, Akiko Hattori, Atsushi Tatsugawa, Ken Kawata
-
Patent number: 9080127Abstract: A composition comprising at least one compound represented by the following formula (Z) is disclose. A-L-{D1-(E)q-D2-(B)m—Z1—R}p??(Z) In the formula, A represents a p-valent, linear or cyclic residue; L represents a single bond or a divalent linking group; p indicates an integer of at least 2; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfoxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk)-), or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divalent group; R represents a hydrogen atom, or a substituted or unsubstituted alkyl group having at most 7 carbon atoms; B represents oxyethylene group or the like; Z1 represents a single bond, or a divalent group.Type: GrantFiled: June 23, 2010Date of Patent: July 14, 2015Assignee: FUJIFILM CorporationInventors: Ken Kawata, Saisuke Watanabe, Hiroshi Kawamoto
-
Patent number: 8828565Abstract: Disclosed is a lubricant composition comprising at least one kind of compound represented by following formula (1): where X represents a cyclic group that may be substituted; Y represents a divalent or higher-valent linking group having at least one polar group and having no aromatic cyclic group; p1 represents an integer of 1 to 4; p2, p3, and p4 each represent an integer of 0 to 4; q represents an integer of 0 to 30; n represents an integer of 1 to 10; s represents an integer of 1 to 4; and t represents an integer of 2 to 10.Type: GrantFiled: March 7, 2012Date of Patent: September 9, 2014Assignee: FUJIFILM CorporationInventors: Hiroki Sugiura, Masayuki Harada, Ken Kawata, Akiko Hattori, Atsushi Tatsugawa
-
Publication number: 20140012028Abstract: A compound represented by following formula (I): A-L-{D1-(E)q-D2-(B)m—Z1—R}p. In the formula, A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfonyloxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk)-) or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divalent group; and R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group.Type: ApplicationFiled: September 6, 2013Publication date: January 9, 2014Applicant: FUJIFILM CorporationInventors: Saisuke WATANABE, Hiyoku Nakata, Ken Kawata
-
Patent number: 8552213Abstract: To provide a novel compound. It is disclosed a compound represented by following formula (I): A-L-{D1-(E)q-D2-(B)m—Z1—R}p. In the formula, A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfonyloxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk)-) or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divaltn group; and R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group.Type: GrantFiled: March 27, 2009Date of Patent: October 8, 2013Assignee: FUJIFILM CorporationInventors: Saisuke Watanabe, Hiyoku Nakata, Ken Kawata
-
Patent number: 8524644Abstract: A composition is disclosed comprising an oily medium and at least one compound represented by the following formula (Z) A-L-[D1-(E)q-D2-(B)m—Z1—R]p??(Z) wherein A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents a carbonyl group or a sulfonyl group; D2 represents a carbonyl group, a sulfonyl group, a carboxyl group, a sulfonyloxyl group, a carbamoyl group, or a sulfamoyl group; E represents a divalent group; R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group; B represents an oxyethylene group or the like; and Z1 represents a single bond or a divalent group.Type: GrantFiled: March 27, 2009Date of Patent: September 3, 2013Assignee: FUJIFILM CorporationInventors: Ken Kawata, Saisuke Watanabe
-
Publication number: 20120231297Abstract: Disclosed is a lubricant composition comprising at least one kind of compound represented by following formula (1): where X represents a cyclic group that may be substituted; Y represents a divalent or higher-valent linking group having at least one polar group and having no aromatic cyclic group; p1 represents an integer of 1 to 4; p2, p3, and p4 each represent an integer of 0 to 4; q represents an integer of 0 to 30; n represents an integer of 1 to 10; s represents an integer of 1 to 4; and t represents an integer of 2 to 10.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicant: FUJIFILM CORPORATIONInventors: Hiroki SUGIURA, Masayuki HARADA, Ken KAWATA, Akiko HATTORI, Atsushi TATSUGAWA
-
Publication number: 20120201962Abstract: A composition comprising at least one compound represented by the following formula (Z) is disclose. A-L-{D1-(E)q-D2-(B)m—Z1—R}p??(Z) In the formula, A represents a p-valent, linear or cyclic residue; L represents a single bond or a divalent linking group; p indicates an integer of at least 2; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfoxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk)-), or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divalent group; R represents a hydrogen atom, or a substituted or unsubstituted alkyl group having at most 7 carbon atoms; B represents oxyethylene group or the like; Z1 represents a single bond, or a divalent group.Type: ApplicationFiled: June 23, 2010Publication date: August 9, 2012Applicant: FUJIFILM CorporationInventors: Ken Kawata, Saisuke Watanabe, Hiroshi Kawamoto
-
Publication number: 20120184474Abstract: To provide a novel complex alcohol ester composition useful as a lubricant agent. The novel complex alcohol ester composition includes a polyester in which at least two molecules of a polyol represented by a formula (I): R(OH)n (wherein R represents an n-valent aliphatic, alicyclic or aromatic group, one or more carbon atoms not adjacent to each other in R may be individually substituted with an oxygen atom, and n indicates an integer of 2 or more) are linked through at least two ester bonds via at least one molecule of a polybasic acid, and at least a part of the non-linked side chain ends of the polyol have a group represented by a formula (II): (AO)kR2 (wherein R2 represents a hydrocarbon group, A represents a divalent linking group, and k indicates an integer) via a polybasic acid.Type: ApplicationFiled: September 27, 2010Publication date: July 19, 2012Applicant: FUJIFILM CorporationInventors: Ken Kawata, Akio Tamura, Saisuke Watanabe
-
Publication number: 20120021253Abstract: [Problem] Provided is a novel lubricant composition that is useful as a material of a lubricating layer of a magnetic recording medium. [Means for Resolution] The lubricant composition contains at least one kind of compound represented by the following Formula (1). In the formula, X represents a cyclic group that may be substituted, and Y represents a single bond or a linking group having a valency of 2 or more. Here, at least one of X and Y includes 1 or more polar groups such as a hydroxyl group; Z represents a linking group having a valency of 2 or more and constituted with a carbon atom (C), a fluorine atom (F), and 1 or 2 kinds of arbitrary atoms (here, a hydrogen atom is excluded); n represents a real number of 1 to 10; m represents a real number of 0 to 1; and s and t independently represent a real number of 1 or greater.Type: ApplicationFiled: March 3, 2010Publication date: January 26, 2012Applicant: FUJIFILM CORPORATIONInventors: Hiyoku Nakata, Akiko Hattori, Atsushi Tatsugawa, Ken Kawata
-
Patent number: 7947328Abstract: A metal pattern forming method includes the steps of: applying one of a metal salt solution and an acetylene compound solution onto the substrate, the acetylene compound solution containing an acetylene compound expressed by a general formula of: (R.Type: GrantFiled: September 25, 2008Date of Patent: May 24, 2011Assignee: Fujifilm CorporationInventors: Ken Kawata, Seiichi Inoue, Yasuhiko Maeda
-
Publication number: 20110034357Abstract: To provide a novel composition useful as lubricant composition or the like. It is disclosed a composition comprising an oily medium and at least one compound represented by following formula (Z). A-L-{D1-(E)q-D2-(B)m—Z1—R}p??(Z) A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfonyloxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk) or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divalent group; R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group; B represents an oxyethylene group or the like; and Z1 represents a single bond or a divalent group.Type: ApplicationFiled: March 27, 2009Publication date: February 10, 2011Inventors: Ken Kawata, Saisuke Watanabe
-
Publication number: 20110015422Abstract: To provide a novel compound. It is disclosed a compound represented by following formula (I): A-L-{D1-(E)q-D2-(B)m—Z1—R}p. In the formula, A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—); D2 represents a carbonyl group (—C(?O)—), a sulfonyl group (—S(?O)2—), a carboxyl group (—C(?O)O—), a sulfonyloxyl group (—S(?O)2O—), a carbamoyl group (—C(?O)N(Alk)-) or a sulfamoyl group (—S(?O)2N(Alk)-); E represents a divaltn group; and R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group.Type: ApplicationFiled: March 27, 2009Publication date: January 20, 2011Applicant: FUJIJILM CorporationInventors: Saisuke Watanabe, Hiyoku Nakata, Ken Kawata
-
Patent number: 7622432Abstract: A novel lubricant composition is disclosed. The composition comprises the compound selected from the formula (1), where D represents an m-valent cyclic group capable of bonding to “m” of —X—R; Xs respectively represent a single bond or a bivalent linking group selected from the group consisting of NR1, where R1 is a hydrogen atom or a C1-30 alkyl group, oxygen, sulfur, carbonyl, sulfonyl and any combinations thereof; Rs respectively represent a substituted or non-substituted alkyl, alkenyl, alkynyl, aryl or heterocyclic group provided that at least one R contains an ester bond; and m is an integer from 2 to 11.Type: GrantFiled: April 13, 2004Date of Patent: November 24, 2009Assignee: Fujifilm CorporationInventors: Masayuki Negoro, Ken Kawata
-
Publication number: 20090143262Abstract: A lubricant composition containing a polymer having a mesogen structure in a main chain and/or side chains thereof is disclosed.Type: ApplicationFiled: March 30, 2006Publication date: June 4, 2009Applicant: FUJIFILM CorporationInventor: Ken Kawata
-
Publication number: 20090118146Abstract: The novel impregnating oil composition for a sintered bearing is disclosed. The composition comprises a base oil, at least one compound represented by a formula (1). In the formula, D represents an m-valent cyclic group capable of binding to “m” of —X—R; each X represents a single bond or a bivalent linking group selected from the group consisting of NR1, where R1 is a hydrogen atom or a C1-30 alkyl group, oxygen, sulfur, carbonyl, sulfonyl and any combinations thereof; each R represents a substituted or non-substituted, alkyl group, alkenyl group, alkynyl group, aryl group or heterocyclic group, or a halogen atom, hydroxy, amino, mercapto, cyano, sulfide, carboxy or salt thereof, a sulfo or salt thereof, hydroxylamine, ureido or urethane; and m is an integer from 2 to 11.Type: ApplicationFiled: August 25, 2006Publication date: May 7, 2009Inventors: Masayuki Negoro, Ken Kawata