Patents by Inventor Takatoshi Kitagawa
Takatoshi Kitagawa 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: 10029474Abstract: A liquid storage unit including a first liquid storage chamber having a constant volume and being capable of holding liquid supplied from a liquid tank; a second liquid storage chamber communicating with the first liquid storage chamber; a pressure control chamber configured to change a pressure of the pressure control chamber through actuation of a pressure control unit; and an elastic member being configured to tightly partition the second liquid storage chamber and the pressure control chamber from each other and being deformable so as to increase and decrease a volume of the second liquid storage chamber in accordance with the pressure of the pressure control chamber. The elastic member is capable of removing bubbles in the first liquid storage chamber by increasing and decreasing the volume of the second liquid storage chamber through the deformation.Type: GrantFiled: May 18, 2015Date of Patent: July 24, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Hitoshi Takada, Yasuo Kotaki, Tetsuya Ohashi, Ryoji Inoue, Takatoshi Kitagawa, Hironori Murakami, Takeho Miyashita, Hiroki Hayashi, Hironori Fukuchi, Norihiro Ikebe, Takashi Fukushima
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Patent number: 9957368Abstract: The present invention is a phenolic resin foam board having a thickness of 40 mm or more to 300 mm or less, when the phenolic resin foam board is sliced into n pieces (n?5) at approximately equal intervals of 8 mm or more to 10 mm or less, a density of an n-th specimen is dn, an average density of n pieces of specimens is dave, a lowest density among the densities of n pieces of specimens is dmin, 0?(dave?dmin)/dave?0.12 is established, and when values for Di=(di+d(i+1))/2 are calculated, Di values are plotted and points corresponding to the Di values are connected, resulting in a density distribution curve, no straight line parallel to the horizontal axis intersects the density distribution curve at four points.Type: GrantFiled: February 26, 2014Date of Patent: May 1, 2018Assignee: ASAHI KASEI CONSTRUCTION MATERIALS CORPORATIONInventors: Takayuki Kuroda, Hisashi Mihori, Takatoshi Kitagawa
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Patent number: 9636919Abstract: A liquid discharge head including a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, a discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with a discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.Type: GrantFiled: April 28, 2016Date of Patent: May 2, 2017Assignee: Canon Kabushiki KaishaInventors: Ryoji Inoue, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Takashi Fukushima, Hironori Murakami, Norihiro Ikebe, Hironori Fukuchi, Kyosuke Toda, Hiroki Hayashi, Takatoshi Kitagawa
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Publication number: 20160236480Abstract: A liquid discharge head including a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, a discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with a discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.Type: ApplicationFiled: April 28, 2016Publication date: August 18, 2016Inventors: Ryoji Inoue, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Takashi Fukushima, Hironori Murakami, Norihiro Ikebe, Hironori Fukuchi, Kyosuke Toda, Hiroki Hayashi, Takatoshi Kitagawa
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Patent number: 9352576Abstract: A liquid discharge head includes a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, a discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with a discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.Type: GrantFiled: May 19, 2015Date of Patent: May 31, 2016Assignee: Canon Kabushiki KaishaInventors: Ryoji Inoue, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Takashi Fukushima, Hironori Murakami, Norihiro Ikebe, Hironori Fukuchi, Kyosuke Toda, Hiroki Hayashi, Takatoshi Kitagawa
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Publication number: 20160002428Abstract: The present invention is a phenolic resin foam board having a thickness of 40 mm or more to 300 mm or less, when the phenolic resin foam board is sliced into n pieces (n?5) at approximately equal intervals of 8 mm or more to 10 mm or less, a density of an n-th specimen is dn, an average density of n pieces of specimens is dave, a lowest density among the densities of n pieces of specimens is dmin, 0?(dave?dmin)/dave?0.12 is established, and when values for Di=(di+d(i+1))/2 are calculated, Di values are plotted and points corresponding to the Di values are connected, resulting in a density distribution curve, no straight line parallel to the horizontal axis intersects the density distribution curve at four points.Type: ApplicationFiled: February 26, 2014Publication date: January 7, 2016Applicant: ASAHI KASEI CONSTRUCTION MATERIALS CORPORATIONInventors: Takayuki KURODA, Hisashi MIHORI, Takatoshi KITAGAWA
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Publication number: 20150343793Abstract: A liquid storage unit including a first liquid storage chamber having a constant volume and being capable of holding liquid supplied from a liquid tank; a second liquid storage chamber communicating with the first liquid storage chamber; a pressure control chamber configured to change a pressure of the pressure control chamber through actuation of a pressure control unit; and an elastic member being configured to tightly partition the second liquid storage chamber and the pressure control chamber from each other and being deformable so as to increase and decrease a volume of the second liquid storage chamber in accordance with the pressure of the pressure control chamber. The elastic member is capable of removing bubbles in the first liquid storage chamber by increasing and decreasing the volume of the second liquid storage chamber through the deformation.Type: ApplicationFiled: May 18, 2015Publication date: December 3, 2015Inventors: Hitoshi Takada, Yasuo Kotaki, Tetsuya Ohashi, Ryoji Inoue, Takatoshi Kitagawa, Hironori Murakami, Takeho Miyashita, Hiroki Hayashi, Hironori Fukuchi, Norihiro Ikebe, Takashi Fukushima
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Publication number: 20150343790Abstract: A liquid discharge head including a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, an discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with an discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.Type: ApplicationFiled: May 19, 2015Publication date: December 3, 2015Inventors: Ryoji Inoue, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Takashi Fukushima, Hironori Murakami, Norihiro Ikebe, Hironori Fukuchi, Kyosuke Toda, Hiroki Hayashi, Takatoshi Kitagawa
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Patent number: 9120904Abstract: There is provided an expandable phenolic resin composition comprising: a phenolic resin; an acid curing catalyst for the resin; a foaming agent; and a surfactant, wherein the foaming agent comprises a hydrocarbon-based foaming agent; and the surfactant is a polyoxyethylene alkyl ether having an alkyl ether moiety having 14 to 22 carbon atoms, and the content of the surfactant is 0.01 to 10 parts by weight relative to 100 parts by weight of the phenolic resin.Type: GrantFiled: November 4, 2009Date of Patent: September 1, 2015Assignee: ASAHI KASEI CONTRUCTION MATERIALS CORPORATIONInventors: Takatoshi Kitagawa, Hisashi Mihori, Yoshihito Fukasawa
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Patent number: 8646887Abstract: The liquid cartridge includes a housing configured to accommodate the liquid container for storing liquid, a groove portion formed on an outer surface of the housing, a liquid lead-out opening, formed on a bottom surface of the groove portion communicating with the liquid container and configured such that the liquid lead-out path for guiding the liquid inside the liquid container to the outside is connected to or disconnected from the liquid lead-out path, a flow path extending toward the inside of the housing from an end of the groove portion in a liquid dripping direction, and a liquid absorbing member provided at an end opposite to the groove portion of the flow path.Type: GrantFiled: May 16, 2011Date of Patent: February 11, 2014Assignee: Canon Kabushiki KaishaInventors: Hideki Ogura, Yasuo Kotaki, Tatsuo Nanjo, Takatoshi Kitagawa, Keisuke Matsuo, Norihiro Ikebe, Eiichiro Shimizu
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Patent number: 8317305Abstract: In a configuration to inform conditions of an ink tank such as an ink residual quantity by use of a light emitting portion such as a light emitting diode, a display in a position easily viewable to a user is achieved without requiring electric wiring that hinders user visibility and operability. A display section for displaying information by letting light out is separated from a light emitting portion, and a light guiding portion for achieving optical connection between both of the constituents is provided on an ink tank holder. In this way, it is possible to dispose the light emitting portion and the display section respectively in optimum locations, and to ensure freedom of disposing the display section in a position achieving fine user visibility.Type: GrantFiled: March 6, 2009Date of Patent: November 27, 2012Assignee: Canon Kabushiki KaishaInventors: Takatoshi Kitagawa, Nobuyuki Hatasa
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Patent number: 8287109Abstract: A present invention provides an ink housing container inhibiting a resin used to form a layer located outside the innermost layer from flowing into a position other than a predetermined one. In an ink tank having an ink container and a cover member, the ink container is formed by a plurality of layers by means of molding. A flow-in preventing portion is formed at a cover member-side end of a side wall of an inner layer one of a plurality of layers forming the ink container. The flow-in preventing portion is formed so as to project from the cover member-side end.Type: GrantFiled: July 24, 2009Date of Patent: October 16, 2012Assignee: Canon Kabushiki KaishaInventor: Takatoshi Kitagawa
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Publication number: 20120198686Abstract: A method of producing a liquid cartridge having an identification part corresponding to a type of liquid held inside the liquid cartridge, the method includes preparing the liquid cartridge having a plurality of protrusions protruding from an external wall; and forming the identification part corresponding to the type of liquid by melting at least one of the protrusions. In this way, a strong mis-loading prevention part that prevents mis-loading of the liquid cartridge into a liquid consuming apparatus can be constituted without generating waste.Type: ApplicationFiled: January 31, 2012Publication date: August 9, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Takatoshi Kitagawa, Yasuo Kotaki, Hitoshi Takada, Koichi Kubo, Hiroki Hayashi, Takeho Miyashita
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Publication number: 20110285797Abstract: The liquid cartridge includes a housing configured to accommodate the liquid container for storing liquid, a groove portion formed on an outer surface of the housing, a liquid lead-out opening, formed on a bottom surface of the groove portion communicating with the liquid container and configured such that the liquid lead-out path for guiding the liquid inside the liquid container to the outside is connected to or disconnected from the liquid lead-out path, a flow path extending toward the inside of the housing from an end of the groove portion in a liquid dripping direction, and a liquid absorbing member provided at an end opposite to the groove portion of the flow path.Type: ApplicationFiled: May 16, 2011Publication date: November 24, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Hideki Ogura, Yasuo Kotaki, Tatsuo Nanjo, Takatoshi Kitagawa, Keisuke Matsuo, Norihiro Ikebe, Eiichiro Shimizu
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Publication number: 20110263731Abstract: There is provided an expandable phenolic resin composition comprising: a phenolic resin; an acid curing catalyst for the resin; a foaming agent; and a surfactant, wherein the foaming agent comprises a hydrocarbon-based foaming agent; and the surfactant is a polyoxyethylene alkyl ether having an alkyl ether moiety having 14 to 22 carbon atoms, and the content of the surfactant is 0.01 to 10 parts by weight relative to 100 parts by weight of the phenolic resin.Type: ApplicationFiled: November 4, 2009Publication date: October 27, 2011Applicant: ASAHI KASEI CONSTRUCTION MATERIALS CORPORATIONInventors: Takatoshi Kitagawa, Hisashi Mihori, Yoshihito Fukasawa
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Patent number: 7918547Abstract: A liquid container for containing liquid includes an optical path formation member for forming an optical path for guiding to an operating portion light received from an outside at a predetermined position of the liquid container, the optical path forming member constituting a part of the liquid container, wherein the operating portion is caused to emit light by the light guided by the optical path.Type: GrantFiled: October 20, 2005Date of Patent: April 5, 2011Assignee: Canon Kabushiki KaishaInventors: Nobuyuki Hatasa, Takatoshi Kitagawa
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Publication number: 20100026774Abstract: A present invention provides an ink housing container inhibiting a resin used to form a layer located outside the innermost layer from flowing into a position other than a predetermined one. In an ink tank having an ink container and a cover member, the ink container is formed by a plurality of layers by means of molding. A flow-in preventing portion is formed at a cover member-side end of a side wall of an inner layer one of a plurality of layers forming the ink container. The flow-in preventing portion is formed so as to project from the cover member-side end.Type: ApplicationFiled: July 24, 2009Publication date: February 4, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Takatoshi Kitagawa
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Publication number: 20090174736Abstract: In a configuration to inform conditions of an ink tank such as an ink residual quantity by use of a light emitting portion such as a light emitting diode, a display in a position easily viewable to a user is achieved without requiring electric wiring that hinders user visibility and operability. A display section for displaying information by letting light out is separated from a light emitting portion, and a light guiding portion for achieving optical connection between both of the constituents is provided on an ink tank holder. In this way, it is possible to dispose the light emitting portion and the display section respectively in optimum locations, and to ensure freedom of disposing the display section in a position achieving fine user visibility.Type: ApplicationFiled: March 6, 2009Publication date: July 9, 2009Applicant: Canon Kabushiki KaishaInventors: Takatoshi Kitagawa, Nobuyuki Hatasa
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Publication number: 20090122092Abstract: A liquid container for containing liquid includes an optical path formation member for forming an optical path for guiding to an operating portion light received from an outside at a predetermined position of the liquid container, the optical path forming member constituting a part of the liquid container, wherein the operating portion is caused to emit light by the light guided by the optical path.Type: ApplicationFiled: October 20, 2005Publication date: May 14, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Nobuyuki Hatasa, Takatoshi Kitagawa
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Patent number: D696721Type: GrantFiled: July 20, 2012Date of Patent: December 31, 2013Assignee: Canon Kabushiki KaishaInventors: Takatoshi Kitagawa, Hideo Fukazawa, Takashi Kusanagi, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Koichi Kubo, Takeho Miyashita