Patents by Inventor Takafumi Fujii
Takafumi Fujii 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: 7585361Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1): (wherein, A, B, C and D independently represents a 6-membered ring having aromaticity, at least one or more is a benzene ring, at least one or more contains a nitrogen-containing heteroaromatic ring; in addition, E represents alkylene and each of X and Y independently represents a substituted or unsubstituted anilino group or a substituted or unsubstituted naphthylamino group; and b is 0 to 2.9, c is 0.1 to 3 and the sum of b and c is 1 to 3) which has a good hue as a cyan ink, is excellent in light fastness, ozone fastness and moisture fastness, and does not cause bronze phenomenon, as well as is thus suitable for inkjet recording.Type: GrantFiled: April 5, 2007Date of Patent: September 8, 2009Assignee: Nippon Kayaku Kabushiki KaishaInventors: Takashi Yoneda, Yoshiaki Kawaida, Hiroyuki Tsukui, Takafumi Fujii
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Publication number: 20090151599Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1): (wherein, A, B, C and D independently represents a 6-membered ring having aromaticity, at least one or more is a benzene ring, at least one or more contains a nitrogen-containing heteroaromatic ring; in addition, E represents alkylene and each of X and Y independently represents a substituted or unsubstituted anilino group or a substituted or unsubstituted naphthylamino group; and b is 0 to 2.9, c is 0.1 to 3 and the sum of b and c is 1 to 3) which has a good hue as a cyan ink, is excellent in light fastness, ozone fastness and moisture fastness, and does not cause bronze phenomenon, as well as is thus suitable for inkjet recording.Type: ApplicationFiled: April 5, 2007Publication date: June 18, 2009Inventors: Takafumi Fujii, Takashi Yoneda, Yoshiaki Kawaida, Hiroyuki Tsukui
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Publication number: 20090029120Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1): (wherein, A, B, C and D independently represent a 6-membered ring having aromaticity, at least one or more of them are benzene rings and at least one or more of them contain nitrogen-containing heteroaromatic rings; E represents alkylene, X is a substituted anilino group and have at least one or more of sulfo group, carboxy group and phosphono group as a substituent, Y represents a hydroxy group or an amino group, b is respectively 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3) in free acid form, which is suitable for inkjet recording because it has good hue as a cyan ink, is excellent in light fastness, ozone fastness and moisture fastness, and does not cause bronzing phenomenon.Type: ApplicationFiled: February 8, 2007Publication date: January 29, 2009Inventors: Takafumi Fujii, Yoshiaki Kawaida
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Patent number: 7419537Abstract: The present invention relates to a phthalocyanine colorant characterized in that it has, as substituents, at least one unsubstituted sulfamoyl group and at least one substituted sulfamoyl group, the total number of these groups being 2 to 4, the substituent on the substituted sulfamoyl group has a substituted triazinyl group bonded thereto through a crosslinking group, and the unsubstituted sulfamoyl group and the substituted sulfamoyl group are bonded to the phthalocyanine ring at the ?-position. Said phthalocyanine colorant is suitable for use in an ink, especially a cyan ink, for an ink-jet printer. A printed matter obtained by printing with said ink is excellent in light fastness, ozone fastness and moisture fastness.Type: GrantFiled: March 29, 2004Date of Patent: September 2, 2008Assignee: Nippon Kayaku Kabushiki KaishaInventors: Takafumi Fujii, Hirokazu Kitayama, Shinichi Namba
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Publication number: 20080190942Abstract: A heat insulated container, in which the presence of this heat insulation performance can be confirmed from the outward appearance. In a heat insulated container formed by coating a radiation preventing film on at least one surface of an external surface of an internal glass container and an internal surface of an external glass container, disposing the internal container inside the external container with a gap provided therebetween, joining the internal container and the external container, and evacuating the gap to a vacuum and sealing it, an average particle diameter of particles on the surface of the radiation preventing film is made a predetermined value or more. According to the heat insulated container, since the average particle diameter of the particles on the surface of the radiation preventing film is a predetermined value or more, sufficient heat retaining performance can be obtained.Type: ApplicationFiled: March 28, 2005Publication date: August 14, 2008Applicant: THERMOS K.K.Inventors: Takafumi Fujii, Yu Kobayashi
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Publication number: 20080006598Abstract: A heat insulated container preventing a pad from scratching the side surfaces of containers, from peeling off a radiation preventing film and from creating a heat transfer path that promotes heat transfer. The heat insulated container is formed as follows: interposing a positioning jig between an internal container and an upper external container member of an external container comprising the upper external container member and a lower external container member to form a gap of a preset dimension therebetween; joining together an opening of the upper external container member and the opening of the internal container and removing the positioning jig from the gap; and then joining together the upper external container member and the lower external container member and evacuating the gap between the external container and the internal container to a vacuum and sealing the same.Type: ApplicationFiled: March 28, 2005Publication date: January 10, 2008Applicant: THERMOS K.K.Inventors: Takafumi Fujii, Yu Kobayashi
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Publication number: 20070295684Abstract: An object is to prevent cracking of a radiant heat preventing film which occurs near an opening area. A heat insulated container 10 produced by coating an external surface of a glass internal container 12 with a radiant heat preventing film 24, disposing the internal container 12 inside an external container 16 with a gap 14 interposed therebetween, heating an opening area so as to melt the same to thereby unite the internal container 12 with the external container 16, and evacuating the gap 14 to a vacuum, is characterized in that a region 26 not coated with the radiant heat preventing film 24 is provided in the vicinity of the opening area of the external surface. As a result, cracking does not occur in the radiant heat preventing film 24 at the time of heating and melting the opening area 18.Type: ApplicationFiled: March 23, 2005Publication date: December 27, 2007Inventors: Takafumi Fujii, Yu Kobayashi
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Patent number: 7297196Abstract: The present invention provides magenta dyestuff represented by the formula (1): (wherein symbols are as defined in the present description), with hue and vividness suitable to ink-jet recording, records excellent in fastness to light, gas, water and so on and a superior ink composition using said dyestuff.Type: GrantFiled: May 20, 2004Date of Patent: November 20, 2007Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takafumi Fujii, Yasuo Murakami
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Patent number: 7223301Abstract: The present invention provides magenta dyestuff represented by the formula (1): (symbols are as defined in the present description), with hue and vividness suitable to ink-jet recording, excellent fastness to light, gas, water and so on in records and an ink composition using said dyestuff.Type: GrantFiled: May 20, 2004Date of Patent: May 29, 2007Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takafumi Fujii, Yasuo Murakami, Noriko Kajiura
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Publication number: 20070045302Abstract: A microwave overheating prevention container has at least an external surface in internal and external surfaces of a metallic container coated with a nonmetallic material which is a synthetic resin material. The metallic container comprises an internal container and an external container where end faces are joined together with a space provided between the internal and external containers. The space between the internal container and the external container is vacuumed.Type: ApplicationFiled: August 21, 2006Publication date: March 1, 2007Applicants: Thermos Limited Liability Company, Thermos K.K.Inventors: Takafumi Fujii, Yu Kobayashi
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Publication number: 20070022903Abstract: The present invention relates to a phthalocyanine colorant characterized in that it has, as substituents, at least one unsubstituted sulfamoyl group and at least one substituted sulfamoyl group, the total number of these groups being 2 to 4, the substituent on the substituted sulfamoyl group has a substituted triazinyl group bonded thereto through a crosslinking group, and the unsubstituted sulfamoyl group and the substituted sulfamoyl group are bonded to the phthalocyanine ring at the ?-position. Said phthalocyanine colorant is suitable for use in an ink, especially a cyan ink, for an ink-jet printer. A printed matter obtained by printing with said ink is excellent in light fastness, ozone fastness and moisture fastness.Type: ApplicationFiled: March 29, 2004Publication date: February 1, 2007Inventors: Takafumi Fujii, Hirokazu Kitayama, Shinichi Namba
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Publication number: 20070006772Abstract: The present invention relates to a phthalocyanine colorant characterized in that it has, as substituents, at least one unsubstituted sulfamoyl group and at least one substituted sulfamoyl group, the total number of these groups being 2 to 4, and the unsubstituted sulfamoyl group and the substituted sulfamoyl group are bonded to the phthalocyanine ring at the ?-position. Said phthalocyanine colorant is suitable for use in an ink, especially a cyan ink, for an ink-jet printer. A printed matter obtained by printing with said ink is excellent in light fastness, ozone fastness and moisture fastness.Type: ApplicationFiled: March 23, 2004Publication date: January 11, 2007Inventors: Takafumi Fujii, Hirokazu Kitayama, Shinichi Namba
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Publication number: 20060219131Abstract: The present invention provides magenta dyestuff represented by the formula (1): (symbols are as defined in the present description), with hue and vividness suitable to ink-jet recording, excellent fastness to light, gas, water and so on in records and an ink composition using said dyestuff.Type: ApplicationFiled: May 20, 2004Publication date: October 5, 2006Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takafumi Fujii, Yasuo Murakami, Noriko Kajiura
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Patent number: 7034149Abstract: The present invention relates to a cyan dye mixture, an ink composition containing the mixture and a method of ink-jet recording with the ink composition. The print obtained by the method is characterized by discoloring or fading little even when allowed to stand in a well ventilated shade or in an ozone gas. The cyan dye mixture comprises compounds which are obtained by chlorosulfonating, as a starting material, copper phthalocyanine or a sulfonated copper phthalocyanine and then aminating the chlorosulfonation product with an aminating agent used in an amount of at least 2.5 mol per mol of the starting material, and which are represented by the following formula (1): wherein M represents a proton, alkali metal ion, alkaline earth metal ion, onium ion of an organic amine, or ammonium ion; m is an integer of 1 to 4; and n is an integer of 0 to 3; provided that m+n is an integer of 1 to 4.Type: GrantFiled: July 25, 2001Date of Patent: April 25, 2006Assignee: Nippon Kayaku Kabushiki KaishaInventors: Kitayama Hirokazu, Shinichi Namba, Takafumi Fujii, Junji Otani, Junko Yoshioka, Yasuo Shirasaki
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Patent number: 7015327Abstract: New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excelleType: GrantFiled: April 1, 2005Date of Patent: March 21, 2006Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyuki Matsumoto, Katsunori Fujii, Takafumi Fujii, Yasuo Shirasaki
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Patent number: 7005167Abstract: A heat insulating container is described, including an outer glass container and an inner glass container housed therein with a gap formed in-between as a heat insulating layer. A radiant heat preventive film containing a metal oxide is disposed on at least one of the external surface of the inner container or the internal surface of the outer container, wherein the radiant heat preventive film has a reflectivity of 35% or higher with a wavelength of 15 ?m. When the thickness of the radiant heat preventive film is 3000 ?, the Hall mobility “x” (cm2/V·s) and the carrier concentration “y” (cm?3) of the same satisfy the following formulae: y??5×1020x+2×1021 and y??6×1018x+3×1020. When the thickness of the radiant heat preventive film is 5000 ?, x and y satisfy the following formulae: y??5×1020x+3×1021 and y??6×1018x+7×1020. Such radiant heat preventive films can have high reflectivity.Type: GrantFiled: June 10, 2003Date of Patent: February 28, 2006Assignee: Thermos K.K.Inventors: Naoho Baba, Takafumi Fujii, Isao Watanabe
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Publication number: 20050230399Abstract: The present invention provides a vacuum insulating double vessel having transparent slits and a method for manufacturing the same which can form transparent slits safely and simply without using any particular equipment and particular chemical and which can be mass-produced at a low cost. This vacuum insulating double vessel includes a vacuum insulating layer provided between an inner vessel and an outer vessel of the double vessel made of a transparent material, and metal films applied to the outer surface of the inner vessel and the inner surface of the outer vessel which face the vacuum insulating layer, and the vacuum insulating double vessel comprises strip-shaped metal film unapplied portions in a vessel height direction in the metal film applied portions, and a plurality of opening vestiges, on the outer vessel, which result from sealing a plurality of openings used for injecting and discharging chemical solutions for applying the metal films, and used as air passages.Type: ApplicationFiled: April 15, 2004Publication date: October 20, 2005Applicant: THERMOS K.K.Inventors: Takafumi Fujii, Eiji Otsuka
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Patent number: 6929361Abstract: New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excelType: GrantFiled: September 25, 2002Date of Patent: August 16, 2005Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyuki Matsumoto, Katsunori Fujii, Takafumi Fujii, Yasuo Shirasaki
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Publication number: 20050171351Abstract: New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excelleType: ApplicationFiled: April 1, 2005Publication date: August 4, 2005Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Takafumi Fujii, Yasuo Shirasaki
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Patent number: 6915917Abstract: A heat insulating container and its manufacturing method is provided. The heat insulating container comprises an inner container and an outer glass container, in which the breakage of the glass containers can be prevented even if a minute flaw is formed on either of the glass containers. The insulating container possesses a superior radiant heat insulating capability. The inner glass container is housed in the outer glass container with a gap in between, which air-gap functions as a heat insulating layer. A radiant heat preventive film containing metal oxide is provided at least either on the outer surface of the inner glass container or on the inner surface of the outer glass container with an intermediate film containing SiO2 in between.Type: GrantFiled: April 1, 2003Date of Patent: July 12, 2005Assignee: Thermos K.K.Inventors: Isao Watanabe, Takafumi Fujii, Naoho Baba