Patents by Inventor Masataka Yashima
Masataka Yashima 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: 20230151231Abstract: A printed product including: a yellow image formed on an image receiving sheet including a coloring material receiving layer and a surface protective layer formed on the yellow image, wherein the yellow image and the surface protective layer are formed by sequentially applying heat to a yellow coloring material layer for forming the yellow image and a surface protective layer forming layer for forming a surface protective layer through use of a thermal transfer recording sheet including the yellow coloring material layer and the surface protective layer forming layer field sequentially; the yellow coloring material layer contains a compound having a predetermined structure as a yellow coloring material, and wherein in the printed product having formed thereon the yellow image and the surface protective layer, the compound permeates into the coloring material receiving layer to a depth of 2 ?m or more.Type: ApplicationFiled: November 8, 2022Publication date: May 18, 2023Inventors: Koromo Shirota, Masataka Yashima, Taichi Shintou, Tsuyoshi Santo, Tomoyuki Noda
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Publication number: 20210270823Abstract: A diagnostic agent for use in detecting a target substance in a specimen, including a mixture of: a photosensitizer-loaded particle containing a photosensitizer that generates singlet oxygen during light irradiation; a fluorescent dye-loaded particle containing a fluorescent dye that changes in luminescent characteristics depending on an oxidation reaction with the singlet oxygen; and an aggregation inhibitor that inhibits aggregation of the photosensitizer-loaded particle and the fluorescent dye-loaded particle, characterized in that at least one of the photosensitizer-loaded particle and the fluorescent dye-loaded particle has the property of binding to the target substance, and the surface of the photosensitizer-loaded particles and the surface of the fluorescent dye-loaded particles have a stimulus-responsive polymer, a diagnostic kit for producing the diagnostic agent, and a diagnostic method with the use of a component of the diagnostic agent.Type: ApplicationFiled: February 18, 2021Publication date: September 2, 2021Inventors: Masaru Sugita, Masataka Yashima, Kyohei Wada, Koichi Sato, Akira Tsuboyama
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Patent number: 9705087Abstract: Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.Type: GrantFiled: February 25, 2016Date of Patent: July 11, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Minako Nakasu, Masataka Yashima, Hajime Muta, Keiji Okinaka, Tomona Yamaguchi, Tomonari Horikiri, Maki Okajima, Naoki Yamada
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Publication number: 20160181528Abstract: Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.Type: ApplicationFiled: February 25, 2016Publication date: June 23, 2016Inventors: MINAKO NAKASU, MASATAKA YASHIMA, HAJIME MUTA, KEIJI OKINAKA, TOMONA YAMAGUCHI, TOMONARI HORIKIRI, MAKI OKAJIMA, NAOKI YAMADA
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Patent number: 9312494Abstract: Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.Type: GrantFiled: December 2, 2010Date of Patent: April 12, 2016Assignee: Canon Kabushiki KaishaInventors: Minako Nakasu, Masataka Yashima, Hajime Muta, Keiji Okinaka, Tomona Yamaguchi, Tomonari Horikiri, Maki Okajima, Naoki Yamada
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Patent number: 8404363Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: GrantFiled: December 21, 2010Date of Patent: March 26, 2013Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo, Kazunori Ueno
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Patent number: 8354788Abstract: An organic light emitting device having long continuous driving lifetime is provided. The organic light emitting device includes an anode, a cathode, and an emission layer formed of an organic compound arranged between the anode and the cathode, in which the emission layer includes a light emitting material and a material having a smallest ionization potential, and an absorption spectrum in a radical cation state of the material having the smallest ionization potential in the emission layer does not have its absorption peak in an emission wavelength region of the light emitting material.Type: GrantFiled: May 14, 2009Date of Patent: January 15, 2013Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Masataka Yashima, Maki Okajima, Hajime Muta
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Publication number: 20120205639Abstract: Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.Type: ApplicationFiled: December 2, 2010Publication date: August 16, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Minako Nakasu, Masataka Yashima, Hajime Muta, Keiji Okinaka, Tomona Yamaguchi, Tomonari Horikiri, Maki Okajima, Naoki Yamada
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Patent number: 8227094Abstract: Provided is an organic electroluminescent device for emitting blue light, which has high luminous efficiency and good drive durability. This organic electroluminescent device for emitting blue light includes an anode 2, a cathode 6, and a layer which contains an organic compound interposed between the anode 2 and the cathode 6, the layer which contains an organic compound including at least a light-emitting layer 4, wherein the light-emitting layer 4 contains a bipolar host having a hole mobility and an electron mobility of 10?4 cm2/Vs or greater, a light-emitting dopant and a carrier trapping dopant, and the light-emitting dopant energy gap EgB, the bipolar host energy gap Egh, and the carrier trapping dopant energy gap Egd are such that Egd>Egh>EgB.Type: GrantFiled: April 15, 2008Date of Patent: July 24, 2012Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Masataka Yashima, Akihito Saitoh, Naoki Yamada
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Patent number: 7952269Abstract: An organic light-emitting device is provided which has an optical output with a high efficiency, a high luminance and a long life and which includes a pair of electrodes including an anode and a cathode, and at least one layer comprising an organic compound provided between the pair of electrodes, wherein at least one layer having a light-emitting region of the at least one layer comprising the organic compound comprises a first compound represented by the general formula (1): and a second compound having a bandgap larger than a bandgap of the first compound.Type: GrantFiled: November 16, 2005Date of Patent: May 31, 2011Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Masataka Yashima, Akihito Saitoh, Naoki Yamada, Akihiro Senoo, Kazunori Ueno
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Publication number: 20110089822Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: ApplicationFiled: December 21, 2010Publication date: April 21, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo
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Patent number: 7919199Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: GrantFiled: August 24, 2009Date of Patent: April 5, 2011Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo, Kazunori Ueno
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Patent number: 7901732Abstract: A production process of a light amount adjustment member, by which a cheap light amount adjustment member hating excellent optical properties can be simply produced is provided. A light amount adjustment device and a photographing apparatus which are cheap, have excellent optical properties and are equipped with the light amount adjustment member are provided by providing the simple production process of the light amount adjustment member. The production process comprises the step of relatively scanning an ink-jet head, from which an ink is ejected on a transparent base material, on the surface of which an ink-receiving layer has been formed, to the transparent base material to apply the ink to the ink-receiving layer, thereby forming a light amount adjustment region, wherein in the step of forming the light amount adjustment region, the ink is ejected from the ink-jet head in such a manner that the ink is applied to the whole light amount adjustment region.Type: GrantFiled: February 19, 2003Date of Patent: March 8, 2011Assignee: Canon Kabushiki KaishaInventors: Masataka Yashima, Ichiro Onuki, Takeshi Miyazaki, Akio Kashiwazaki, Eriko Namazue
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Publication number: 20110001864Abstract: An organic light emitting device having long continuous driving lifetime is provided. The organic light emitting device includes an anode, a cathode, and an emission layer formed of an organic compound arranged between the anode and the cathode, in which the emission layer includes a light emitting material and a material having a smallest ionization potential, and an absorption spectrum in a radical cation state of the material having the smallest ionization potential in the emission layer does not have its absorption peak in an emission wavelength region of the light emitting material.Type: ApplicationFiled: May 14, 2009Publication date: January 6, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Keiji Okinaka, Masataka Yashima, Maki Okajima, Hajime Muta
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Patent number: 7815966Abstract: A production process of a light amount adjustment member, by which a light amount adjustment member that can sufficiently satisfy optical properties can be economically produced at low production cost and high yield by a simple operation is provided. In addition, a wide variety of light amount adjustment devices and photographing apparatus equipped with a light amount adjustment member are cheaply provided while achieving satisfactory optical properties. The production process of the light amount adjustment member comprises the step of applying a coloring liquid containing a coloring material to a transparent base material using a liquid jet recording process to form a light amount adjustment region having a particular optical density.Type: GrantFiled: February 19, 2003Date of Patent: October 19, 2010Assignee: Canon Kabushiki KaishaInventors: Takeshi Miyazaki, Ichiro Onuki, Masataka Yashima, Akio Kashiwazaki, Eriko Namazue
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Patent number: 7812518Abstract: There is provided an organic electroluminescent display apparatus including a plurality of pixels constituting a display portion, each of the pixels includes sub-pixels of at least four colors, each of which includes an organic electroluminescent device having a pair of the electrodes and an organic compound layer formed between the pair of the electrodes, and the sub-pixels of at least four colors constitute a convex polygon containing a white color on CIE chromaticity coordinates, and includes the sub-pixels of two colors to be complementary colors with the white color interposed therebetween. In this case, the organic compound layers of the sub-pixels of two colors each contain a phosphorescent organic compound. The organic electroluminescent display apparatus can enlarge the color gamut and simultaneously can reduce the power consumption.Type: GrantFiled: March 27, 2007Date of Patent: October 12, 2010Assignee: Canon Kabushiki KaishaInventors: Koichi Fukuda, Masataka Yashima, Toshinori Hasegawa
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Patent number: 7785719Abstract: The present invention provides a fluorene compound having a novel substituent, and the fluorene compound is represented by the following formula [1]:Type: GrantFiled: November 23, 2005Date of Patent: August 31, 2010Assignee: Canon Kabushiki KaishaInventors: Naoki Yamada, Akihito Saitoh, Keiji Okinaka, Masataka Yashima, Akihiro Senoo, Kazunori Ueno
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Patent number: 7740958Abstract: Provided is an organic light-emitting device capable of emitting light with high efficiency by incorporating a silyl compound in which a silyl group and an amino group are directly bonded to an anthracene ring particularly into its light-emitting layer. In the organic light-emitting device including: a pair of electrodes composed of an anode and a cathode; and an organic compound layer interposed between the pair of electrodes, wherein the organic compound layer contains the following silyl compound. A layer containing at least one kind of the silyl compound is a light-emitting layer.Type: GrantFiled: February 23, 2007Date of Patent: June 22, 2010Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Masataka Yashima
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Patent number: 7709104Abstract: There is provided an aminoanthryl derivative-substituted pyrene compound represented by the following general formula (1). The compound is useful as a compound for an organic light-emitting device exhibiting highly pure luminescent color, and an optical output with high efficiency, high luminance, and long life.Type: GrantFiled: November 17, 2005Date of Patent: May 4, 2010Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Keiji Okinaka, Naoki Yamada, Masataka Yashima, Akihiro Senoo, Kazunori Ueno
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Publication number: 20100019236Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: ApplicationFiled: August 24, 2009Publication date: January 28, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo