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).

  • Patent number: 7585361
    Abstract: 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: Grant
    Filed: April 5, 2007
    Date of Patent: September 8, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Takashi Yoneda, Yoshiaki Kawaida, Hiroyuki Tsukui, Takafumi Fujii
  • Publication number: 20090151599
    Abstract: 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: Application
    Filed: April 5, 2007
    Publication date: June 18, 2009
    Inventors: Takafumi Fujii, Takashi Yoneda, Yoshiaki Kawaida, Hiroyuki Tsukui
  • Publication number: 20090029120
    Abstract: 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: Application
    Filed: February 8, 2007
    Publication date: January 29, 2009
    Inventors: Takafumi Fujii, Yoshiaki Kawaida
  • Patent number: 7419537
    Abstract: 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: Grant
    Filed: March 29, 2004
    Date of Patent: September 2, 2008
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Takafumi Fujii, Hirokazu Kitayama, Shinichi Namba
  • Publication number: 20080190942
    Abstract: 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: Application
    Filed: March 28, 2005
    Publication date: August 14, 2008
    Applicant: THERMOS K.K.
    Inventors: Takafumi Fujii, Yu Kobayashi
  • Publication number: 20080006598
    Abstract: 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: Application
    Filed: March 28, 2005
    Publication date: January 10, 2008
    Applicant: THERMOS K.K.
    Inventors: Takafumi Fujii, Yu Kobayashi
  • Publication number: 20070295684
    Abstract: 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: Application
    Filed: March 23, 2005
    Publication date: December 27, 2007
    Inventors: Takafumi Fujii, Yu Kobayashi
  • Patent number: 7297196
    Abstract: 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: Grant
    Filed: May 20, 2004
    Date of Patent: November 20, 2007
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takafumi Fujii, Yasuo Murakami
  • Patent number: 7223301
    Abstract: 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: Grant
    Filed: May 20, 2004
    Date of Patent: May 29, 2007
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takafumi Fujii, Yasuo Murakami, Noriko Kajiura
  • Publication number: 20070045302
    Abstract: 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: Application
    Filed: August 21, 2006
    Publication date: March 1, 2007
    Applicants: Thermos Limited Liability Company, Thermos K.K.
    Inventors: Takafumi Fujii, Yu Kobayashi
  • Publication number: 20070022903
    Abstract: 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: Application
    Filed: March 29, 2004
    Publication date: February 1, 2007
    Inventors: Takafumi Fujii, Hirokazu Kitayama, Shinichi Namba
  • Publication number: 20070006772
    Abstract: 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: Application
    Filed: March 23, 2004
    Publication date: January 11, 2007
    Inventors: Takafumi Fujii, Hirokazu Kitayama, Shinichi Namba
  • Publication number: 20060219131
    Abstract: 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: Application
    Filed: May 20, 2004
    Publication date: October 5, 2006
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Yasuo Shirasaki, Takafumi Fujii, Yasuo Murakami, Noriko Kajiura
  • Patent number: 7034149
    Abstract: 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: Grant
    Filed: July 25, 2001
    Date of Patent: April 25, 2006
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kitayama Hirokazu, Shinichi Namba, Takafumi Fujii, Junji Otani, Junko Yoshioka, Yasuo Shirasaki
  • Patent number: 7015327
    Abstract: 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 excelle
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: March 21, 2006
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Takafumi Fujii, Yasuo Shirasaki
  • Patent number: 7005167
    Abstract: 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: Grant
    Filed: June 10, 2003
    Date of Patent: February 28, 2006
    Assignee: Thermos K.K.
    Inventors: Naoho Baba, Takafumi Fujii, Isao Watanabe
  • Publication number: 20050230399
    Abstract: 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: Application
    Filed: April 15, 2004
    Publication date: October 20, 2005
    Applicant: THERMOS K.K.
    Inventors: Takafumi Fujii, Eiji Otsuka
  • Patent number: 6929361
    Abstract: 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 excel
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: August 16, 2005
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Takafumi Fujii, Yasuo Shirasaki
  • Publication number: 20050171351
    Abstract: 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 excelle
    Type: Application
    Filed: April 1, 2005
    Publication date: August 4, 2005
    Inventors: Hiroyuki Matsumoto, Katsunori Fujii, Takafumi Fujii, Yasuo Shirasaki
  • Patent number: 6915917
    Abstract: 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: Grant
    Filed: April 1, 2003
    Date of Patent: July 12, 2005
    Assignee: Thermos K.K.
    Inventors: Isao Watanabe, Takafumi Fujii, Naoho Baba