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).

  • Publication number: 20240147843
    Abstract: 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 NM
    Type: Application
    Filed: January 13, 2022
    Publication date: May 2, 2024
    Inventors: Satomi TASAKI, Kazuki NISHIMURA, Tetsuya MASUDA, Hiroaki TOYOSHIMA, Masato NAKAMURA, Hiroaki ITOI, Emiko KAMBE, Tasuku HAKETA, Yusuke TAKAHASHI, Keitaro YAMADA, Takeshi IKEDA
  • Publication number: 20240147846
    Abstract: 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: Application
    Filed: December 8, 2021
    Publication date: May 2, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Shota TANAKA, Shintaro BAN, Satomi TASAKI, Hiroaki ITOI, Tasuku HAKETA, Yuki NAKANO
  • Publication number: 20240130224
    Abstract: 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: Application
    Filed: December 24, 2021
    Publication date: April 18, 2024
    Applicant: 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
  • Publication number: 20240122064
    Abstract: 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: Application
    Filed: January 21, 2022
    Publication date: April 11, 2024
    Inventors: Hiroaki TOYOSHIMA, Kazuki NISHIMURA, Tetsuya MASUDA, Satomi TASAKI, Emiko KAMBE
  • Patent number: 10188737
    Abstract: 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: Grant
    Filed: April 26, 2016
    Date of Patent: January 29, 2019
    Assignee: ASTELLAS PHARMA INC.
    Inventors: Hiroaki Tasaki, Mitsuru Yoshida, Daisuke Tsunashima, Ryota Azuma
  • Publication number: 20180133325
    Abstract: 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: Application
    Filed: April 26, 2016
    Publication date: May 17, 2018
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Hiroaki TASAKI, Mitsuru YOSHIDA, Daisuke TSUNASHIMA, Ryota AZUMA
  • Patent number: 9918970
    Abstract: 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: Grant
    Filed: May 18, 2011
    Date of Patent: March 20, 2018
    Assignee: Astellas Pharma Inc.
    Inventors: Tatsunobu Yoshioka, Makoto Murai, Hiroaki Tasaki
  • Patent number: 9408835
    Abstract: 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: Grant
    Filed: March 28, 2014
    Date of Patent: August 9, 2016
    Assignee: ASTELLAS PHARMA INC.
    Inventors: Seiji Takae, Hiroyuki Kojima, Atsushi Sakurai, Tetsuya Tamura, Hiroaki Tasaki, Atsushi Muro
  • Publication number: 20160045479
    Abstract: 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: Application
    Filed: March 28, 2014
    Publication date: February 18, 2016
    Applicant: ASTELLAS PHARMA INC.
    Inventors: SEIJI TAKAE, HIROYUKI KOJIMA, ATSUSHI SAKURAI, TETSUYA TAMURA, HIROAKI TASAKI, ATSUSHI MURO
  • Patent number: 9050249
    Abstract: 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: Grant
    Filed: April 28, 2005
    Date of Patent: June 9, 2015
    Assignee: ASTELLAS PHARMA INC.
    Inventors: Takayuki Yoshida, Hiroaki Tasaki, Masataka Katsuma, Atsushi Maeda
  • Publication number: 20110288118
    Abstract: 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: Application
    Filed: May 18, 2011
    Publication date: November 24, 2011
    Applicant: Astellas Pharma Inc.
    Inventors: Tatsunobu YOSHIOKA, Makoto Murai, Hiroaki Tasaki
  • Publication number: 20100151034
    Abstract: 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: Application
    Filed: September 28, 2009
    Publication date: June 17, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Takeshi Yano, Soichiro Nakamura, Hiroaki Tasaki, Kazuhiro Sako
  • Publication number: 20100136110
    Abstract: 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: Application
    Filed: September 28, 2009
    Publication date: June 3, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Hiroaki Tasaki, Atsushi Maeda, Takeshi Yano, Kazuhiro Sako
  • Publication number: 20050287211
    Abstract: 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: Application
    Filed: April 28, 2005
    Publication date: December 29, 2005
    Applicant: Astellas Pharma Inc.
    Inventors: Takayuki Yoshida, Hiroaki Tasaki, Masataka Katsuma, Atsushi Maeda
  • Publication number: 20050175689
    Abstract: 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: Application
    Filed: October 27, 2004
    Publication date: August 11, 2005
    Applicant: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Ippei Kurimoto, Yuki Kasashima, Hitoshi Kawai, Yuuki Takaishi, Masataka Katsuma, Hiroshi Ohi, Takayuki Yoshida, Hiroaki Tasaki