Patents by Inventor Hiroaki Tasaki
Hiroaki Tasaki 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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ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT DISPLAY APPARATUS, AND DIGITAL DEVICE
Publication number: 20240147843Abstract: An organic EL device includes an emitting region provided between a cathode and an anode, a first anode-side-organic layer, a second anode-side-organic layer, and a third anode-side-organic layer, in which the emitting region includes at least a first emitting layer, the first anode-side-organic layer is in direct contact with the second anode-side-organic layer, the second anode-side-organic layer is in direct contact with the third anode-side-organic layer, the third anode-side-organic layer has a film thickness of 20 nm or more, the second anode-side-organic layer contains at least one compound different from a compound contained in the third anode-side-organic layer, the first emitting layer is a fluorescent emitting layer, and a refractive index NM2 of a constituent material contained in the second anode-side-organic layer and a refractive index NM3 of a constituent material contained in the third anode-side-organic layer satisfy a relationship of Numerical Formula NM, NM2>NM3??(Numerical Formula NMType: ApplicationFiled: January 13, 2022Publication date: May 2, 2024Inventors: Satomi TASAKI, Kazuki NISHIMURA, Tetsuya MASUDA, Hiroaki TOYOSHIMA, Masato NAKAMURA, Hiroaki ITOI, Emiko KAMBE, Tasuku HAKETA, Yusuke TAKAHASHI, Keitaro YAMADA, Takeshi IKEDA -
Publication number: 20240147846Abstract: An organic electroluminescent element including, an anode, a cathode, and an organic layer disposed between the anode and the cathode and including a light emitting zone. The organic layer includes a first layer containing a first compound and a second layer containing a second compound. The first layer and the second layer are different layers.Type: ApplicationFiled: December 8, 2021Publication date: May 2, 2024Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Shota TANAKA, Shintaro BAN, Satomi TASAKI, Hiroaki ITOI, Tasuku HAKETA, Yuki NAKANO
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Publication number: 20240130224Abstract: An organic electroluminescence device includes an emitting region between a cathode and an anode, a first anode side organic layer, and a second anode side organic layer. The emitting region includes at least a first emitting layer, the first anode side organic layer is in direct contact with the second anode side organic layer, the first anode side organic layer contains first and second organic materials, a content of the first organic material in the first anode side organic layer is less than 50 mass %, the second anode side organic layer contains a second hole transporting zone material, the first emitting layer is an emitting layer that emits fluorescence, and a refractive index NM1 of the constituent materials contained in the first anode side organic layer and a refractive index NM2 of the constituent material contained in the second anode side organic layer satisfy a relationship of NM1>NM2.Type: ApplicationFiled: December 24, 2021Publication date: April 18, 2024Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Hiroaki TOYOSHIMA, Kazuki NISHIMURA, Tetsuya MASUDA, Satomi TASAKI, Masato NAKAMURA, Hiroaki ITOI, Emiko KAMBE, Yusuke TAKAHASHI, Keitaro YAMADA, Takeshi IKEDA, Tasuku HAKETA
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Publication number: 20240122064Abstract: An organic EL device includes a first emitting layer and a second emitting layer, in which the first emitting layer contains a first host material, the second emitting layer contains a second host material, the first host material and the second host material are mutually different, the first emitting layer contains at least a first emitting compound that emits light with a maximum peak wavelength of 453 nm or less, the second emitting layer contains at least a second emitting compound that emits light with a maximum peak wavelength of 500 nm or less, the first emitting compound and the second emitting compound are mutually the same or different, and the triplet energy T1(H1) of the first host material and the triplet energy T1(H2) of the second host material satisfy a relationship of a numerical formula (Numerical Formula 1) below, T1(H1)>T1(H2)??(Numerical Formula 1).Type: ApplicationFiled: January 21, 2022Publication date: April 11, 2024Inventors: Hiroaki TOYOSHIMA, Kazuki NISHIMURA, Tetsuya MASUDA, Satomi TASAKI, Emiko KAMBE
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Patent number: 10188737Abstract: Provided is a pharmaceutical composition, which comprises 5-{[(3R)-1-acryloylpyrrolidin-3-yl]oxy}-6-ethyl-3-({4-[4-(4-methylpiperazin-1-yl)piperidin-1-yl]phenyl}amino)-pyrazine-2-carboxamide (hereinafter referred to as “compound A”) or a pharmaceutically acceptable salt thereof, and is stabilized. The pharmaceutical composition comprises compound A or a pharmaceutically acceptable salt thereof, and a pharmaceutical additive having a difference in water activity value of 0.1 or more, and is stabilized.Type: GrantFiled: April 26, 2016Date of Patent: January 29, 2019Assignee: ASTELLAS PHARMA INC.Inventors: Hiroaki Tasaki, Mitsuru Yoshida, Daisuke Tsunashima, Ryota Azuma
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Publication number: 20180133325Abstract: Provided is a pharmaceutical composition, which comprises 5-{[(3R)-1-acryloylpyrrolidin-3-yl]oxy}-6-ethyl-3-({4-[4-(4-methylpiperazin-1-yl)piperidin-1-yl]phenyl}amino)-pyrazine-2-carboxamide (hereinafter referred to as “compound A”) or a pharmaceutically acceptable salt thereof, and is stabilized. The pharmaceutical composition comprises compound A or a pharmaceutically acceptable salt thereof, and a pharmaceutical additive having a difference in water activity value of 0.1 or more, and is stabilized.Type: ApplicationFiled: April 26, 2016Publication date: May 17, 2018Applicant: ASTELLAS PHARMA INC.Inventors: Hiroaki TASAKI, Mitsuru YOSHIDA, Daisuke TSUNASHIMA, Ryota AZUMA
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Patent number: 9918970Abstract: Disclosed is a pharmaceutical composition comprising a complex between solifenacin or a pharmaceutically acceptable salt thereof and an ion exchange resin, and an acrylic based polymer.Type: GrantFiled: May 18, 2011Date of Patent: March 20, 2018Assignee: Astellas Pharma Inc.Inventors: Tatsunobu Yoshioka, Makoto Murai, Hiroaki Tasaki
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Patent number: 9408835Abstract: A pharmaceutical composition containing, as the active ingredient, 4-{[(1R,2s,3S,5s,7s)-5-hydroxy-2-adamantyl]amino}-1H-pyrrolo[2,3-b]pyridine-5-carboxamide, of which the solubility in an acidic pH region is different from that in a neutral pH region, with rapid disintegration property and rapid drug dissolution property as well as the expectation of a good drug dosing compliance, is provided. The pharmaceutical composition for oral administration of the present invention contains 4-{[(1R,2s,3S,5s,7s)-5-hydroxy-2-adamantyl]amino}-1H-pyrrolo[2,3-b]pyridine-5-carboxamide or a pharmaceutically acceptable salt thereof, and a hydrophilic lubricant, and is useful as a pharmaceutical composition for oral administration with rapid disintegration property and rapid drug dissolution property as well as the expectation of a good drug dosing compliance.Type: GrantFiled: March 28, 2014Date of Patent: August 9, 2016Assignee: ASTELLAS PHARMA INC.Inventors: Seiji Takae, Hiroyuki Kojima, Atsushi Sakurai, Tetsuya Tamura, Hiroaki Tasaki, Atsushi Muro
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Publication number: 20160045479Abstract: A pharmaceutical composition containing, as the active ingredient, 4-{[(1R,2s,3S,5s,7s)-5-hydroxy-2-adamantyl]amino}-1H-pyrrolo[2,3-b]pyridine-5-carboxamide, of which the solubility in an acidic pH region is different from that in a neutral pH region, with rapid disintegration property and rapid drug dissolution property as well as the expectation of a good drug dosing compliance, is provided. The pharmaceutical composition for oral administration of the present invention contains 4-{[(1R,2s,3S,5s,7s)-5-hydroxy-2-adamantyl]amino}-1H-pyrrolo[2,3-b]pyridine-5-carboxamide or a pharmaceutically acceptable salt thereof, and a hydrophilic lubricant, and is useful as a pharmaceutical composition for oral administration with rapid disintegration property and rapid drug dissolution property as well as the expectation of a good drug dosing compliance.Type: ApplicationFiled: March 28, 2014Publication date: February 18, 2016Applicant: ASTELLAS PHARMA INC.Inventors: SEIJI TAKAE, HIROYUKI KOJIMA, ATSUSHI SAKURAI, TETSUYA TAMURA, HIROAKI TASAKI, ATSUSHI MURO
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Patent number: 9050249Abstract: The present invention relates to an oral pharmaceutical composition in particle form, which comprises particles that contain a drug at the core of the pharmaceutical composition in particle form; a middle layer that contains two types of water-soluble components, an insolubilizer and an insolubilizing substance; and an outer layer for controlling water penetration that contains a water-insoluble substance. The present invention makes it possible to provide a pharmaceutical composition in particle form for oral use with which initial drug release is suppressed, the drug is quickly released thereafter, and lag time can be controlled as needed, and fast-disintegrating tablets containing this composition.Type: GrantFiled: April 28, 2005Date of Patent: June 9, 2015Assignee: ASTELLAS PHARMA INC.Inventors: Takayuki Yoshida, Hiroaki Tasaki, Masataka Katsuma, Atsushi Maeda
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Publication number: 20110288118Abstract: Disclosed is a pharmaceutical composition comprising a complex between solifenacin or a pharmaceutically acceptable salt thereof and an ion exchange resin, and an acrylic based polymer.Type: ApplicationFiled: May 18, 2011Publication date: November 24, 2011Applicant: Astellas Pharma Inc.Inventors: Tatsunobu YOSHIOKA, Makoto Murai, Hiroaki Tasaki
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Publication number: 20100151034Abstract: A granular pharmaceutical composition for oral administration, comprising (1) atorvastatin or a pharmaceutically acceptable salt thereof, (2) a surfactant selected from the group consisting of sodium laurylsulfate and polyoxyethylene hydrogenated castor oil, and (3) a water-soluble polymer, is disclosed.Type: ApplicationFiled: September 28, 2009Publication date: June 17, 2010Applicant: Astellas Pharma Inc.Inventors: Takeshi Yano, Soichiro Nakamura, Hiroaki Tasaki, Kazuhiro Sako
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Publication number: 20100136110Abstract: A granular pharmaceutical composition for oral administration, wherein a drug-containing particle is coated with a coating comprising a methyl methacrylate-butyl methacrylate-dimethylaminoethyl methacrylate copolymer and a water-soluble polymer is disclosed.Type: ApplicationFiled: September 28, 2009Publication date: June 3, 2010Applicant: Astellas Pharma Inc.Inventors: Hiroaki Tasaki, Atsushi Maeda, Takeshi Yano, Kazuhiro Sako
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Publication number: 20050287211Abstract: The present invention relates to an oral pharmaceutical composition in particle form, which comprises particles that contain a drug at the core of the pharmaceutical composition in particle form; a middle layer that contains two types of water-soluble components, an insolubilizer and an insolubilizing substance; and an outer layer for controlling water penetration that contains a water-insoluble substance. The present invention makes it possible to provide a pharmaceutical composition in particle form for oral use with which initial drug release is suppressed, the drug is quickly released thereafter, and lag time can be controlled as needed, and fast-disintegrating tablets containing this composition.Type: ApplicationFiled: April 28, 2005Publication date: December 29, 2005Applicant: Astellas Pharma Inc.Inventors: Takayuki Yoshida, Hiroaki Tasaki, Masataka Katsuma, Atsushi Maeda
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Publication number: 20050175689Abstract: The present invention makes it possible to provide drug-containing coated microparticles for quick-disintegrating oral tablets wherein microparticles containing a drug with an unpleasant taste are coated with a film composed of (1) a pH-independent water-insoluble polymer accounting for 60% or more but less than 80% of the film and (2) a pH-independent water-soluble substance accounting for more than 20% to 40% or less of the film, these microparticles being characterized in that the rate of dissolution of the drug from the drug-containing microparticles is 0% to 10% in one minute and 80% to 100% in 30 minutes, and the average particle diameter is 350 ?m or less, in order to realize sufficient control of oral drug dissolution and fast gastrointestinal drug dissolution.Type: ApplicationFiled: October 27, 2004Publication date: August 11, 2005Applicant: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Ippei Kurimoto, Yuki Kasashima, Hitoshi Kawai, Yuuki Takaishi, Masataka Katsuma, Hiroshi Ohi, Takayuki Yoshida, Hiroaki Tasaki