Patents by Inventor Takafumi Abe
Takafumi Abe 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: 11788547Abstract: A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.Type: GrantFiled: June 29, 2022Date of Patent: October 17, 2023Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Takahide Tadokoro, Katsuyuki Yamamoto, Hiroya Ito, Yuki Ugajin, Shingo Hamada, Takashi Ikeda, Takafumi Abe
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Publication number: 20220325721Abstract: A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.Type: ApplicationFiled: June 29, 2022Publication date: October 13, 2022Inventors: Takuya TERAMOTO, Takahide TADOKORO, Katsuyuki YAMAMOTO, Hiroya ITO, Yuki UGAJIN, Shingo HAMADA, Takashi IKEDA, Takafumi ABE
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Patent number: 11434924Abstract: A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.Type: GrantFiled: August 9, 2017Date of Patent: September 6, 2022Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Takahide Tadokoro, Katsuyuki Yamamoto, Hiroya Ito, Yuki Ugajin, Shingo Hamada, Takashi Ikeda, Takafumi Abe
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Patent number: 11397013Abstract: An air-sending device includes a fan and a grille provided downstream of the fan in a direction of airflow generated by the fan. The grille includes a first grille that includes a plurality of first bars spaced from each other, and a second grille that includes a plurality of second bars spaced from each other. The plurality of second bars are more densely arranged than the plurality of first bars. The second grille is provided upstream of the first grille in the direction of the airflow generated by the fan, and spaced from the first grille to face the first grille.Type: GrantFiled: May 22, 2018Date of Patent: July 26, 2022Assignee: Mitsubishi Electric CorporationInventors: Takafumi Abe, Takahide Tadokoro, Katsuyuki Yamamoto
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Patent number: 11187238Abstract: A propeller fan includes a cylindrical shaft portion provided on a rotation axis of the propeller fan; a plurality of blades provided on an outer peripheral side of the shaft portion; a connection portion provided adjacent to the shaft portion and connecting two of the plurality of blades that are adjacent to each other in a circumferential direction of the propeller fan; a first rib provided on at least one of a pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on a downstream side in the flow of air, and a second rib provided on at least one of a negative-pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on an upstream side in the flow of air.Type: GrantFiled: August 9, 2017Date of Patent: November 30, 2021Assignee: Mitsubishi Electric CorporationInventors: Katsuyuki Yamamoto, Takuya Teramoto, Takahide Tadokoro, Hiroya Ito, Yuki Ugajin, Shingo Hamada, Takashi Ikeda, Takafumi Abe
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Patent number: 11187239Abstract: A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.Type: GrantFiled: August 9, 2017Date of Patent: November 30, 2021Assignee: Mitsubishi Electric CorporationInventors: Takahide Tadokoro, Takuya Teramoto, Katsuyuki Yamamoto, Hiroya Ito, Yuki Ugajin, Shingo Hamada, Takashi Ikeda, Takafumi Abe
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Publication number: 20210033292Abstract: An air-sending device includes a fan and a grille provided downstream of the fan in a direction of airflow generated by the fan. The grille includes a first grille that includes a plurality of first bars spaced from each other, and a second grille that includes a plurality of second bars spaced from each other. The plurality of second bars are more densely arranged than the plurality of first bars. The second grille is provided upstream of the first grille in the direction of the airflow generated by the fan, and spaced from the first grille to face the first grille.Type: ApplicationFiled: May 22, 2018Publication date: February 4, 2021Inventors: Takafumi ABE, Takahide TADOKORO, Katsuyuki YAMAMOTO
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Publication number: 20210003142Abstract: A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.Type: ApplicationFiled: August 9, 2017Publication date: January 7, 2021Inventors: Takahide TADOKORO, Takuya TERAMOTO, Katsuyuki YAMAMOTO, Hiroya ITO, Yuki UGAJIN, Shingo HAMADA, Takashi IKEDA, Takafumi ABE
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Publication number: 20210003140Abstract: A propeller fan includes a cylindrical shaft portion provided on a rotation axis of the propeller fan; a plurality of blades provided on an outer peripheral side of the shaft portion; a connection portion provided adjacent to the shaft portion and connecting two of the plurality of blades that are adjacent to each other in a circumferential direction of the propeller fan; a first rib provided on at least one of a pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on a downstream side in the flow of air, and a second rib provided on at least one of a negative-pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on an upstream side in the flow of air.Type: ApplicationFiled: August 9, 2017Publication date: January 7, 2021Inventors: Katsuyuki YAMAMOTO, Takuya TERAMOTO, Takahide TADOKORO, Hiroya ITO, Yuki UGAJIN, Shingo HAMADA, Takashi IKEDA, Takafumi ABE
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Publication number: 20200166048Abstract: A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.Type: ApplicationFiled: August 9, 2017Publication date: May 28, 2020Inventors: Takuya TERAMOTO, Takahide TADOKORO, Katsuyuki YAMAMOTO, Hiroya ITO, Yuki UGAJIN, Shingo HAMADA, Takashi IKEDA, Takafumi ABE
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Patent number: 8993774Abstract: A process of production of an aromatic alcohol or a heterocyclic aromatic alcohol, containing a step of reacting an aromatic amine or a heterocyclic aromatic amine having an aromatic ring or a heterocyclic aromatic ring having thereon at least one substituent —CHR1NR2R3 (wherein R1, R2 and R3 each independently represent hydrogen, an alkyl group having from 1 to 4 carbon atoms, or a benzyl group), with an alcohol, in the presence of a basic catalyst.Type: GrantFiled: December 22, 2011Date of Patent: March 31, 2015Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Yutaka Kanbara, Takafumi Abe, Norio Fushimi
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Publication number: 20150007352Abstract: A content storage device comprises a content storage unit which stores master content with content handling information including conditions of copy limitations added thereto, content information management units which acquire to individually manage content information related to the conditions of the copy limitations from the content handling information added to the stored content in storing the master content, a content information provision unit which reads to provide management information in response to a request, and a copy limitation processing unit which determines the conditions of the copy limitations from the management information of the content information management unit in copy requesting of the master content and instructs execution of copy processing only when the conditions are satisfied, and updates the conditions of the copy limitations in accordance with instructing execution of the copy processing.Type: ApplicationFiled: September 18, 2014Publication date: January 1, 2015Inventors: Shinichi Kurihara, Sunao Wada, Yasuo Ooya, Junji Hiroshima, Takafumi Abe
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Publication number: 20130303775Abstract: A process of production of an aromatic alcohol or a heterocyclic aromatic alcohol, containing a step of reacting an aromatic amine or a heterocyclic aromatic amine having an aromatic ring or a heterocyclic aromatic ring having thereon at least one substituent —CHR1NR2R3 (wherein R1, R2 and R3 each independently represent hydrogen, an alkyl group having from 1 to 4 carbon atoms, or a benzyl group), with an alcohol, in the presence of a basic catalyst.Type: ApplicationFiled: December 22, 2011Publication date: November 14, 2013Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yutaka Kanbara, Takafumi Abe, Norio Fushimi
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Publication number: 20090217387Abstract: A content storage device comprises a content storage unit which stores master content with content handling information including conditions of copy limitations added thereto, content information management units which acquire to individually manage content information related to the conditions of the copy limitations from the content handling information added to the stored content in storing the master content, a content information provision unit which reads to provide management information in response to a request, and a copy limitation processing unit which determines the conditions of the copy limitations from the management information of the content information management unit in copy requesting of the master content and instructs execution of copy processing only when the conditions are satisfied, and updates the conditions of the copy limitations in accordance with instructing execution of the copy processing.Type: ApplicationFiled: January 30, 2009Publication date: August 27, 2009Inventors: Shinichi KURIHARA, Sunao Wada, Yasuo Ooya, Junji Hiroshima, Takafumi Abe
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Patent number: 7465832Abstract: A method of producing xylylenediamine of the present invention includes the steps of: subjecting a liquid mixture of phthalonitriles with liquid ammonia or a mixture of liquid ammonia and an organic solvent to a first catalytic hydrogenation treatment, thereby hydrogenating the phthalonitriles to obtain a reaction product (A), wherein a content of the liquid ammonia or the mixture of liquid ammonia and an organic solvent is 80 wt % or more; removing the liquid ammonia in the reaction product (A) to obtain a reaction product (B); subjecting the reaction product (B) to a second catalytic hydrogenation treatment, thereby hydrogenating cyanobenzylamine to obtain a reaction product (C); and distilling the reaction product (C) to purify xylylenediamine.Type: GrantFiled: May 17, 2007Date of Patent: December 16, 2008Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Tomohiro Sugawara, Takafumi Abe, Tatsuyuki Kumano, Kinji Kato
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Patent number: 7375247Abstract: A method for producing MMA-d8 which includes a step of exchanging D in hydroxyl group of methanol-d4 represented by the formula: CD3OD with H to prepare the methanol-d3 represented by the formula CD3OH and simultaneously recovering a deuterium-containing compound, and a step of reacting methanol-d3 with sulfuric acid salt of methacrylic acid amide represented by the formula CD2=(CD3)CO(NH2.H2SO4) to prepare MMA-d8 represented by the formula: CD2=(CD3)COOCD3.Type: GrantFiled: September 1, 2004Date of Patent: May 20, 2008Assignee: Taiyo Nippon Sanso CorporationInventors: Yuichi Sugano, Takafumi Abe, Toshifumi Abe
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Publication number: 20070270613Abstract: A method of producing xylylenediamine of the present invention includes the steps of: subjecting a liquid mixture of phthalonitriles with liquid ammonia or a mixture of liquid ammonia and an organic solvent to a first catalytic hydrogenation treatment, thereby hydrogenating the phthalonitriles to obtain a reaction product (A), wherein a content of the liquid ammonia or the mixture of liquid ammonia and an organic solvent is 80 wt % or more; removing the liquid ammonia in the reaction product (A) to obtain a reaction product (B); subjecting the reaction product (B) to a second catalytic hydrogenation treatment, thereby hydrogenating cyanobenzylamine to obtain a reaction product (C); and distilling the reaction product (C) to purify xylylenediamine.Type: ApplicationFiled: May 17, 2007Publication date: November 22, 2007Inventors: Tomohiro Sugawara, Takafumi Abe, Tatsuyuki Kumano, Kinji Kato
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Publication number: 20070043242Abstract: A method for producing MMA-d8 which includes a step of exchanging D in hydroxyl group of methanol-d4 represented by the formula: CD3OD with H to prepare the methanol-d3 represented by the formula CD3OH and simultaneously recovering a deuterium-containing compound, and a step of reacting methanol-d3 with sulfuric acid salt of methacrylic acid amide represented by the formula CD2?(CD3)CO(NH2·H2SO4) to prepare MMA-d8 represented by the formula: CD2?(CD3)COOCD3.Type: ApplicationFiled: September 1, 2004Publication date: February 22, 2007Applicant: NIPPON SANSO CORPORATIONInventors: Yuichi Sugano, Takafumi Abe, Toshifumi Abe
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Patent number: 6532124Abstract: The present invention relates to an information recording apparatus and a method thereof that allow all data on a magnetic tape to be easily obtained and instrumental data and header information supplied from respective systems to be combined when instrumental data is recorded. According to the present invention, an additional information area is formed at the top of the magnetic tape. The additional information area is followed by a data area. Instrumental data is stored in a buffer memory through a data connector. The header information is stored in a local memory through a header information control connector in addition to a control command. Instrumental data is swept out from the buffer memory and recorded to a data area of the magnetic tape. After the instrumental data is recorded, header information is read from the local memory and stored in the buffer memory. The header information is swept out from the buffer memory and recorded to the additional information area of the magnetic tape.Type: GrantFiled: January 18, 2000Date of Patent: March 11, 2003Assignee: Sony CorporationInventor: Takafumi Abe
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Patent number: 6229661Abstract: This invention provides a digital data recording and reproducing apparatus and a digital data reproducing apparatus for recording data to a recording medium which can handle instrumental data as the data. In the digital data recording and reproducing apparatus according to the invention, in parallel with the writing of data to a magnetic tape, the written data is read. An error correction code of the read data is decoded and whether errors exceeding an error correcting ability which the code has exist or not is checked. In case of handling normal data, in this case, the same data is rewritten by a retrying process. In case of handling instrumental data, the retrying process is not performed and subsequent to the data having uncorrectable errors, the next data is written. In case of reading data as well, data in which uncorrectable errors exist is also read and transferred as it is.Type: GrantFiled: May 25, 1999Date of Patent: May 8, 2001Assignee: Sony CorporationInventor: Takafumi Abe