Patents by Inventor Hidetoshi Fujimura
Hidetoshi Fujimura 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).
-
Publication number: 20240088588Abstract: A power converter includes first and second components on which male and female fitting members of each of a plurality of pairs of fitting members are arranged, with a pair of first alignment keys formed in the first and second components as reference positions. The first and second components are coupled to each other by the female fitting member clamping an insertion portion of the male fitting member inserted between first and second clamping portions of the female fitting member arranged so as to face each other in a state where the pair of first alignment keys are positionally aligned. The first and second clamping portions are each bent so as to form one of protrusions toward one of surfaces thereof facing each other. A gap is formed in a distal end portion of each of the first and second clamping portions.Type: ApplicationFiled: November 21, 2023Publication date: March 14, 2024Inventors: Motohiko FUJIMURA, Hiroshi OGURA, Kazuhiro NISHIKAWA, Yoshihiro KAWAKITA, Hidetoshi KITAURA
-
Publication number: 20240072476Abstract: An electric power converter includes a first board, a second board, and a first board-to-board connector that electrically and mechanically connects the first board and the second board. The first board-to-board connector includes a male fitting member and a female fitting member. Each of a first clamp portion and a second clamp portion of the female fitting member includes a first contact forming portion and a second contact forming portion that are curved in a protruding shape, and a first spring portion and a second spring portion that are connected to the first contact forming portion and the second contact portion, respectively, and that are curved in corrugated shapes. An insert clamped between the first contact forming portion and the second contact forming portion forms an electrical contact, and the first spring portion and the second spring portion are independently deformable.Type: ApplicationFiled: November 7, 2023Publication date: February 29, 2024Inventors: HIDETOSHI KITAURA, HIROSHI OGURA, MOTOHIKO FUJIMURA, KAZUHIRO NISHIKAWA, YOSHIHIRO KAWAKITA
-
Patent number: 11335872Abstract: An organic light emitting device having an exciton generation layer that contains a compound having a difference between the lowest excited singlet energy level ES1 and the lowest excited triplet energy level ET1 thereof of 0.3 eV or less, or an exciplex to emit delayed fluorescence, and a light emitting layer that contains a light emitting material has a high efficiency and a long lifetime.Type: GrantFiled: September 6, 2017Date of Patent: May 17, 2022Assignee: KYULUX, INC.Inventors: Junji Adachi, Ayataka Endo, Ping Kuen Daniel Tsang, Hidetoshi Fujimura, Kiyomasa Sueishi, Asuka Yoshizaki, Keiro Nasu
-
Publication number: 20210234113Abstract: An organic light emitting device having an exciton generation layer that contains a compound having a difference between the lowest excited singlet energy level ES1 and the lowest excited triplet energy level ET1 thereof of 0.3 eV or less, or an exciplex to emit delayed fluorescence, and a light emitting layer that contains a light emitting material has a high efficiency and a long lifetime.Type: ApplicationFiled: September 6, 2017Publication date: July 29, 2021Inventors: Junji ADACHI, Ayataka ENDO, Ping Kuen Daniel TSANG, Hidetoshi FUJIMURA, Kiyomasa SUEISHI, Asuka YOSHIZAKI, Keiro NASU
-
CHARGE TRANSPORT MATERIAL, COMPOUND, DELAYED FLUORESCENT MATERIAL AND ORGANIC LIGHT EMITTING ELEMENT
Publication number: 20190221749Abstract: A compound represented by the following general formula (1) is useful as a charge transport material and others in organic light emitting materials. Ar1 to Ar3 each represents an aryl group or a heteroaryl group and at least one of Ar1 to Ar3 contains a skeleton represented by the following general formula (2). In the general formula (2), X represents O or S. R1 to R8 each represent a hydrogen atom, a substituent or a bonding position.Type: ApplicationFiled: August 18, 2017Publication date: July 18, 2019Inventors: YuSeok YANG, Keiro NASU, Asuka YOSHIZAKI, Ping Kuen Daniel TSANG, Ayataka ENDO, Hiroko NOMURA, Hidetoshi FUJIMURA, Naoto NOTSUKA -
Patent number: 8664394Abstract: A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength ? max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0. In the general formula K-0, R1 to R7 each independently represents a hydrogen atom or a substituent, provided that if R2 is a fluorine atom, R3 is not a hydrogen atom.Type: GrantFiled: June 15, 2011Date of Patent: March 4, 2014Assignee: UDC Ireland LimitedInventors: Tatsuya Igarashi, Toshihiro Ise, Yousuke Miyashita, Hidetoshi Fujimura, Hisashi Okada, Masayuki Mishima, Qiu Xuepeng
-
Publication number: 20110245502Abstract: A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength ? max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0. In the general formula K-0, R1 to R7 each independently represents a hydrogen atom or a substituent, provided that if R2 is a fluorine atom, R3 is not a hydrogen atom.Type: ApplicationFiled: June 15, 2011Publication date: October 6, 2011Applicant: FUJIFILM CorporationInventors: Tatsuya IGARASHI, Toshihiro ISE, Yousuke MIYASHITA, Hidetoshi FUJIMURA, Hisashi OKADA, Masayuki MISHIMA, Qiu XUEPENG
-
Patent number: 8022212Abstract: A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength ? max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0. In the general formula K-0, R1 to R7 each independently represents a hydrogen atom or a substituent, provided that if R2 is a fluorine atom, R3 is not a hydrogen atom.Type: GrantFiled: November 1, 2007Date of Patent: September 20, 2011Assignee: FUJIFILM CorporationInventors: Tatsuya Igarashi, Toshihiro Ise, Yousuke Miyashita, Hidetoshi Fujimura, Hisashi Okada, Masayuki Mishima, Qiu Xuepeng
-
Patent number: 7838131Abstract: The present invention relates to a light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.Type: GrantFiled: October 28, 2009Date of Patent: November 23, 2010Assignee: Fujifilm CorporationInventors: Toshihiro Ise, Tatsuya Igarashi, Yousuke Miyashita, Hidetoshi Fujimura, Masayuki Mishima, Hisashi Okada, Qiu Xuepeng
-
Publication number: 20100044638Abstract: The present invention relates to a light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.Type: ApplicationFiled: October 28, 2009Publication date: February 25, 2010Applicant: FUJIFILM CORPORATIONInventors: Toshihiro ISE, Tatsuya Igarashi, Yousuke Miyashita, Hidetoshi Fujimura, Masayuki Mishima, Hisasi Okada, Qiu Xuepeng
-
Patent number: 7632579Abstract: A light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.Type: GrantFiled: July 26, 2005Date of Patent: December 15, 2009Assignee: FUJIFILM CorporationInventors: Toshihiro Ise, Tatsuya Igarashi, Yousuke Miyashita, Hidetoshi Fujimura, Masayuki Mishima, Hisashi Okada, Qiu Xuepeng
-
Publication number: 20080132701Abstract: A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength ? max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0. In the general formula K-0, R1 to R7 each independently represents a hydrogen atom or a substituent, provided that if R2 is a fluorine atom, R3 is not a hydrogen atom.Type: ApplicationFiled: November 1, 2007Publication date: June 5, 2008Inventors: Tatsuya Igarashi, Toshihiro Ise, Yousuke Miyashita, Hidetoshi Fujimura, Hisashi Okada, Masayuki Mishima, Qiu Xuepeng
-
Patent number: 7306856Abstract: A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength ?max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0.Type: GrantFiled: July 17, 2001Date of Patent: December 11, 2007Assignee: FUJIFILM CorporationInventors: Tatsuya Igarashi, Toshihiro Ise, Yousuke Miyashita, Hidetoshi Fujimura, Hisashi Okada, Masayuki Mishima, Qiu Xuepeng
-
Publication number: 20050260452Abstract: The present invention relates to a light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.Type: ApplicationFiled: July 26, 2005Publication date: November 24, 2005Inventors: Toshihiro Ise, Tatsuya Igarashi, Yousuke Miyashita, Hidetoshi Fujimura, Masayuki Mishima, Hisashi Okada, Qiu Xuepeng
-
Patent number: 6962755Abstract: A light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.Type: GrantFiled: July 17, 2001Date of Patent: November 8, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihiro Ise, Tatsuya Igarashi, Yousuke Miyashita, Hidetoshi Fujimura, Masayuki Mishima, Hisashi Okada, Qiu Xuepeng
-
Publication number: 20020028329Abstract: The present invention relates to a light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.Type: ApplicationFiled: July 17, 2001Publication date: March 7, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Toshihiro Ise, Tatsuya Igarashi, Yousuke Miyashita, Hidetoshi Fujimura, Masayuki Mishima, Hisashi Okada, Qiu Xuepeng
-
Publication number: 20020024293Abstract: A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength &lgr;max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0. In the general formula K-0, R1 to R7 each independently represents a hydrogen atom or a substituent, provided that if R2 is a fluorine atom, R3 is not a hydrogen atom.Type: ApplicationFiled: July 17, 2001Publication date: February 28, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Tatsuya Igarashi, Toshihiro Ise, Yousuke Miyashita, Hidetoshi Fujimura, Hisashi Okada, Masayuki Mishima, Qiu Xuepeng