Patents by Inventor Takafumi Itoh
Takafumi Itoh 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: 20230264382Abstract: A method of producing a wood-based material that is modified is provided. Specifically, there is provided a method of producing a wood-based material, comprising 1) a step of impregnating a wood-based material with a furan derivative resinification solution that comprises a furan derivative, an inorganic salt inhibiting polymerization of the furan derivative at normal temperature, and an inorganic salt accelerating polymerization of the furan derivative; and 2) a step of polymerizing the furan derivative in the furan derivative resinification solution impregnated into the wood-based material within the wood-based material by means of heating.Type: ApplicationFiled: July 27, 2021Publication date: August 24, 2023Inventors: Takafumi ITOH, Hisashi MIYAFUJI, Yuzo FURUTA, Keisuke KOJIRO, Hiroaki HORIYAMA, Yukari OTSUKA, Fujio OHARA, Hiroki ITO, Yoshiko YAMAZAKI
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Patent number: 9967920Abstract: This invention provides an electrical apparatus that includes a main body portion, a battery pack, and a frame portion. The main body portion comprises a converting portion that may convert electric power to one of light, wind, heat, and sound; and an outputting portion. The battery pack may detachably mounted on a battery holder provided at the main body portion, and may supply electric power to the converting portion. The frame portion may rotatably support the main body portion, and may define a first ground contact plane that can contact a ground surface and a second ground contact plane that can contact the ground surface at a different angle from an angle of the first ground contact plane. The main body portion may be rotatable relative to the frame portion without contacting the ground surface.Type: GrantFiled: April 16, 2014Date of Patent: May 8, 2018Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Masato Sakai, Yoshinori Ishizawa, Masanori Okada, Hiroyuki Hasegawa, Takashi Kawamata
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Patent number: 9693470Abstract: An electric device includes: a device body; and a frame guard. The device body has a plurality of surfaces for defining a three-dimensional configuration. The frame guard is configured to guard the device body. The frame guard is connected to the device body and disposed outside the device body. The plurality of surfaces is all disposed inside the frame guard.Type: GrantFiled: June 3, 2014Date of Patent: June 27, 2017Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Masanori Okada, Rui Akiba, Masato Sakai
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Patent number: 9596776Abstract: In order to provide the electrical apparatus capable of improving the handleability, the electrical apparatus of the present invention includes the fan main body portion converting electrical power into wind to output the converted wind from a front face side to an outside of the fan main body portion, the pair of side frames supporting the fan main body portion, the pair of bottom frames extending from lower ends of the side frames to a rear side, the connecting frame connecting the pair of bottom frames, and the battery retaining portion having a rechargeable battery for supplying electrical power to the fan main body portion detachably attached thereto, where the battery retaining portion is provided in the connecting frame and disposed with a space from an air inlet port at a rear face of the tan main body portion.Type: GrantFiled: January 30, 2015Date of Patent: March 14, 2017Assignee: HITACHI KOKI CO., LTD.Inventors: Shigeru Takahashi, Masanori Watanabe, Takafumi Itoh, Jyunichi Suzuki
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Patent number: 9391305Abstract: The backpack-type power supply includes a rechargeable battery, a case, a harness, and an operation unit. The case accommodates the rechargeable battery. A user wears the case on a back of the user by the harness. The operation unit includes at least one of a switch and a display unit. The switch is configured to enable or disable the rechargeable battery. The display unit is configured to display a battery level of the rechargeable battery.Type: GrantFiled: July 3, 2013Date of Patent: July 12, 2016Assignee: Hitachi Koki Co., Ltd.Inventors: Takuya Yoshinari, Haruhisa Fujisawa, Takafumi Itoh
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Patent number: 9345156Abstract: A power supply device includes a main body, a cover member, a rechargeable battery, and an inverter device. The main body is configured of box-shape formed with an opening. The cover member is configured to open and close the opening. The rechargeable battery is accommodated in the main body. The inverter device is configured to be accommodated in the main body. The inverter device converts a direct voltage from the battery to an alternating voltage and outputs the alternating voltage.Type: GrantFiled: August 17, 2012Date of Patent: May 17, 2016Assignee: Hitachi Koki Co., Ltd.Inventors: Masayuki Ogura, Shinji Watanabe, Haruhisa Fujisawa, Kazuhiko Funabashi, Takuhiro Murakami, Yasushi Nakano, Hideki Watanabe, Norihide Tao, Takafumi Itoh
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Publication number: 20150282356Abstract: In order to provide the electrical apparatus capable of improving the handleability, the electrical apparatus of the present invention includes the fan main body portion converting electrical power into wind to output the converted wind from a front face side to an outside of the fan main body portion, the pair of side frames supporting the fan main body portion, the pair of bottom frames extending from lower ends of the side frames to a rear side, the connecting frame connecting the pair of bottom frames, and the battery retaining portion having a rechargeable battery for supplying electrical power to the fan main body portion detachably attached thereto, where the battery retaining portion is provided in the connecting frame and disposed with a space from an air inlet port at a rear face of the tan main body portion.Type: ApplicationFiled: January 30, 2015Publication date: October 1, 2015Inventors: Shigeru TAKAHASHI, Masanori WATANABE, Takafumi ITOH, Jyunichi SUZUKI
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Publication number: 20150194646Abstract: A backpack-type power supply includes a rechargeable battery, a case, and a harness. The case accommodates the rechargeable battery. The case has a surface. By the harness, a user wears the case on a back of the user with the surface facing the back. The surface is formed with a recession and a protrusion.Type: ApplicationFiled: July 4, 2013Publication date: July 9, 2015Inventors: Takuya Yoshinari, Haruhisa Fujisawa, Takafumi Itoh, Naoto Wakatabe, Jyun Enta
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Publication number: 20150043138Abstract: An electric device includes: a device body; and a frame guard. The device body has a plurality of surfaces for defining a three-dimensional configuration. The frame guard is configured to guard the device body. The frame guard is connected to the device body and disposed outside the device body. The plurality of surfaces is all disposed inside the frame guard.Type: ApplicationFiled: June 3, 2014Publication date: February 12, 2015Applicant: HITACHI KOKI CO., LTD.Inventors: Takafumi Itoh, Masanori Okada, Rui Akiba, Masato Sakai
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Publication number: 20140313706Abstract: This invention provides an electrical apparatus that includes a main body portion, a battery pack, and a frame portion. The main body portion comprises a converting portion that may convert electric power to one of light, wind, heat, and sound; and an outputting portion. The battery pack may detachably mounted on a battery holder provided at the main body portion, and may supply electric power to the converting portion. The frame portion may rotatably support the main body portion, and may define a first ground contact plane that can contact a ground surface and a second ground contact plane that can contact the ground surface at a different angle from an angle of the first ground contact plane. The main body portion may be rotatable relative to the frame portion without contacting the ground surface.Type: ApplicationFiled: April 16, 2014Publication date: October 23, 2014Applicant: HITACHI KOKI CO., LTD.Inventors: Takafumi Itoh, Masato Sakai, Yoshinori Ishizawa, Masanori Okada, Hiroyuki Hasegawa, Takashi Kawamata
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Publication number: 20140153171Abstract: A power supply device includes a main body, a cover member, a rechargeable battery, and an inverter device. The main body is configured of box-shape formed with an opening. The cover member is configured to open and close the opening. The rechargeable battery is accommodated in the main body. The inverter device is configured to be accommodated in the main body. The inverter device converts a direct voltage from the battery to an alternating voltage and outputs the alternating voltage.Type: ApplicationFiled: August 17, 2012Publication date: June 5, 2014Applicant: Hitachi Koki Co., Ltd.Inventors: Masayuki Ogura, Shinji Watanabe, Haruhisa Fujisawa, Kazuhiko Funabashi, Takuhiro Murakami, Yasushi Nakano, Hideki Watanabe, Norihide Tao, Takafumi Itoh
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Publication number: 20140011061Abstract: The backpack-type power supply includes a rechargeable battery, a case, a harness, and an operation unit. The case accommodates the rechargeable battery. A user wears the case on a back of the user by the harness. The operation unit includes at least one of a switch and a display unit. The switch is configured to enable or disable the rechargeable battery. The display unit is configured to display a battery level of the rechargeable battery.Type: ApplicationFiled: July 3, 2013Publication date: January 9, 2014Inventors: Takuya Yoshinari, Haruhisa Fujisawa, Takafumi Itoh
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Patent number: D701102Type: GrantFiled: February 8, 2013Date of Patent: March 18, 2014Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Shinichi Kakefuda, Masanori Okada, Miyoji Onose
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Patent number: D726142Type: GrantFiled: December 20, 2013Date of Patent: April 7, 2015Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Rui Akiba, Masanori Okada, Masato Sakai
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Patent number: D744139Type: GrantFiled: September 5, 2013Date of Patent: November 24, 2015Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Masato Sakai, Masanori Okada
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Patent number: D756738Type: GrantFiled: March 6, 2015Date of Patent: May 24, 2016Assignee: Hitachi Koki Co., Ltd.Inventor: Takafumi Itoh
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Patent number: D762435Type: GrantFiled: March 26, 2015Date of Patent: August 2, 2016Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Shinichi Kakefuda
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Patent number: D800650Type: GrantFiled: March 15, 2016Date of Patent: October 24, 2017Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Rui Akiba, Yuji Kishima
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Patent number: D831458Type: GrantFiled: August 29, 2017Date of Patent: October 23, 2018Assignee: Hitachi Koki Co., Ltd.Inventors: Takafumi Itoh, Shinichi Kakefuda, Hisashi Irokawa
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Patent number: D867843Type: GrantFiled: October 26, 2018Date of Patent: November 26, 2019Assignee: Koki Holdings Co., Ltd.Inventors: Takafumi Itoh, Rui Akiba