Patents by Inventor Masayuki Kitagawa

Masayuki Kitagawa 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).

  • Patent number: 12139571
    Abstract: Provided is an oxygen-curable silicone composition that cures at room temperature, the reaction being triggered by oxygen in the atmosphere, without requiring heat or UV irradiation at the time of use, and exhibits good mechanical strength after curing. A composition including (A) an organopolysiloxane (1) (R1 represents an alkyl group or the like but has at least one acryloyloxy group or the like in the molecule, R2 represents an oxygen atom or the like, and m and n represent numbers that satisfy 1?m+n?1,000.), (B) a silicone resin including (a) a unit of formula (2), (b) an R13SiO1/2 unit, and (c) an SiO4/2 unit, the molar ratio of [(a)+(b)]/(c) being 0.4-1.2, and the silicone resin having 0.005 mol/100 g or more Si—OH groups (R1 and R2 are the same as above. R3 represents an acryloyloxyalkyl group or the like, p represents 0-10, and 1 represents a number that satisfies 1-3.), and (C) an organoborane complex (3) (R4-R6 represent hydrocarbon groups.).
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: November 12, 2024
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Taichi Kitagawa, Nobuaki Matsumoto, Toshiyuki Ozai, Masayuki Ikeno
  • Publication number: 20240324195
    Abstract: A semiconductor device manufacturing method of embodiments includes: forming an insulating film on an outer peripheral portion of a surface of a first substrate; after forming the insulating film, forming a silicon layer in contact with the surface inside the insulating film; and forming a porous silicon layer by making the silicon layer inside the insulating film porous using an anodization method.
    Type: Application
    Filed: March 21, 2024
    Publication date: September 26, 2024
    Applicant: Kioxia Corporation
    Inventors: Hakuba KITAGAWA, Mariko SUMIYA, Kohei NAKAMURA, Hiroaki ASHIDATE, Jun TAKAGI, Masayuki FUKUMOTO
  • Publication number: 20240024339
    Abstract: Alleviation of vascular disorder such as vasculitis or angialgia is required in the use of a water-soluble drug causing vascular disorder. According to the present invention, a composition containing a water-soluble drug causing vascular disorder; a solution for use in preparation of an administration solution containing a water-soluble drug causing vascular disorder; and a kit including a water-soluble drug preparation causing vascular disorder and the aforementioned solution, each of which contains a nonionic surfactant in an amount necessary for alleviation of vascular disorder, are provided.
    Type: Application
    Filed: November 18, 2021
    Publication date: January 25, 2024
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Takeshi ONDA, Masayuki KITAGAWA, Naoko IGO, Kazuhisa HARA
  • Publication number: 20170363777
    Abstract: A multilayer laminated substrate is characterized in that at least a transparent resin substrate [A], a metal oxide layer [C], an electroconductive metal layer [D], a high refractive index metal oxide layer [E], and a protection layer [F] containing at least one of an inorganic oxide and an inorganic nitride are stacked in this order and the following (1) and (2) are satisfied: (1) a film thickness of the protection layer [F] is 5 nm to 300 nm; and (2) relative to a sum total of one or more metal elements, one or more semimetal elements, and one or more semiconductor elements contained in the protection layer [F], a content percentage by mass of carbon contained in the protection layer [F] is less than or equal to 50%.
    Type: Application
    Filed: January 14, 2016
    Publication date: December 21, 2017
    Inventors: Yukihiro Maeda, Masayuki Kitagawa, Masanobu Takeda
  • Patent number: 9806824
    Abstract: There is provided a power supply receiver-transmitter device, a wireless power supply receiver, and a wireless power supply transmitter which allow wireless power supply transmission and wireless data transmission and reception, and improve the usability thereof. The wireless power supply receiver-transmitter device includes: a wireless power supply receiver (PR) including a power receiver unit (RU) and a first data transmitter/receiver unit (DRU); a wireless power supply transmitter (PT) including a power transmitter unit (TU); and a second data transmitter/receiver unit (DTU). The wireless power supply receiver (PR) wirelessly receives electric power transmitted from the wireless power supply transmitter (PT), and the first data transmitter/receiver unit (DRU) bidirectionally transmits and receives data to/from the second data transmitter/receiver units (DTU) through optical communications.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 31, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Ken Nakahara, Masayuki Kitagawa
  • Publication number: 20160279164
    Abstract: Provided is a high-molecular weight conjugate of resorcinol derivatives which is excellent in water solubility and stability and has high antitumor activity even when used in a smaller total drug amount than the resorcinol derivatives. The high-molecular weight conjugate of resorcinol derivatives comprises a structure in which a carboxyl group of polymer moiety having a carboxyl group in the side chain and polyethylene glycol moiety is linked to a hydroxyl group of resorcinol derivatives via an ester bond.
    Type: Application
    Filed: May 20, 2016
    Publication date: September 29, 2016
    Inventors: Masaharu Nakamura, Masayuki Kitagawa, Keiichirou Yamamoto, Chieko Seno
  • Patent number: 9346923
    Abstract: Providing a method for producing a compound represented by formula (1) from a compound represented by formula (2), by which the additive amount of an aryl (C1-C8) alkyl alcohol which may have a substituent and the amount of residual carboxyl groups of pAsp (polyaspartic acid) are controlled. A production method including obtaining a compound represented by formula (1) by allowing a compound represented by formula (2) to react with an aryl (C1-C8) alkyl alcohol which may have a substituent, and a carbodiimide-based compound in an amount of 2(x+y) equivalents or more relative to the amount of carboxyl groups in formula (2) (sum of x and y), in a solvent at 15° C. to 30° C. for 2 hours to 48 hours, is used.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: May 24, 2016
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Keiichirou Yamamoto, Masayuki Kitagawa
  • Patent number: 9036675
    Abstract: A communication module according to the present invention includes a substrate, a laser element and a light receiving element provided on a front surface of the substrate and separating from each other, a transparent resin package collectively sealing the laser element and the light receiving element, and a diffusion unit provided to be opposed to a light emitting surface of the laser element at a prescribed distance for diffusing a laser beam emitted by the laser element, while the distance T between the laser element and the light receiving element satisfies the following formula (1): T?t1·tan ?+(t1+t2)·tan ?? . . .
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: May 19, 2015
    Assignee: ROHM CO. LTD.
    Inventors: Akira Obika, Masayuki Kitagawa
  • Patent number: 8940332
    Abstract: A novel podophyllotoxin derivative, which is capable of releasing a drug without depending on biological enzymes and can be expected to have an effective therapeutic effect and is soluble in water has been demanded. A polymer having a polyethyleneglycol structural unit and two or more succinic monoamide structural units, particularly a polymer conjugate of a podophyllotoxin in which a carboxylic acid group of polyethyleneglycol/polyaspartic acid copolymer and a hydroxyl group of podophyllotoxin and linked via an ester bond is provided.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: January 27, 2015
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Keizou Ishikawa, Keiichirou Yamamoto, Kazutoshi Takashio, Masao Shibata
  • Publication number: 20150011715
    Abstract: Provided is a high-molecular weight conjugate of resorcinol derivatives which is excellent in water solubility and stability and has high antitumor activity even when used in a smaller total drug amount than the resorcinol derivatives. The high-molecular weight conjugate of resorcinol derivatives comprises a structure in which a carboxyl group of polymer moiety having a carboxyl group in the side chain and polyethylene glycol moiety is linked to a hydroxyl group of resorcinol derivatives via an ester bond.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 8, 2015
    Inventors: Masaharu Nakamura, Masayuki Kitagawa, Keiichirou Yamamoto, Chieko Seno
  • Patent number: 8920788
    Abstract: Disclosed is a water-soluble high-molecular weight conjugate of physiologically active substances which enable medicament to release without depending on the enzymes in a living body and which is expected to have a useful therapeutic effect. A high-molecular weight conjugate of a physiologically active substance has a substituent group represented by a general formula (1) bonded to a side-chain carboxy group of a block copolymer which has a polyethylene glycol moiety and either a polyaspartic acid moiety or a polyglutamic acid moiety.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: December 30, 2014
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Chieko Seno
  • Publication number: 20140288244
    Abstract: Providing a method for producing a compound represented by formula (1) from a compound represented by formula (2), by which the additive amount of an aryl (C1-C8) alkyl alcohol which may have a substituent and the amount of residual carboxyl groups of pAsp (polyaspartic acid) are controlled. A production method including obtaining a compound represented by formula (1) by allowing a compound represented by formula (2) to react with an aryl (C1-C8) alkyl alcohol which may have a substituent, and a carbodiimide-based compound in an amount of 2(x+y) equivalents or more relative to the amount of carboxyl groups in formula (2) (sum of x and y), in a solvent at 15° C. to 30° C. for 2 hours to 48 hours, is used.
    Type: Application
    Filed: August 31, 2012
    Publication date: September 25, 2014
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Keiichirou Yamamoto, Masayuki Kitagawa
  • Patent number: 8808749
    Abstract: A polymer conjugate of a physiologically active substance, which enables drug release independent of a biological enzyme and can be expected to have a high therapeutic effect, is demanded.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: August 19, 2014
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Chieko Seno, Keiko Ebara, Kazutoshi Takashio
  • Patent number: 8703878
    Abstract: Enzymes in the body vary among different species, and also vary among individuals of the same species. Thus, it has been demanded to develop a novel steroid-containing pharmaceutical preparation which can release a drug in a manner independent of the enzymes present in the body, and which is expected to have an efficacious therapeutic effect. Disclosed is a high-molecular weight conjugate of a steroid, comprising a structure in which a carboxylic acid group of a polymer having a polyethylene glycol moiety and a succinic acid monoamide moiety having two or more succinic acid monoamide units is ester-bonded to a hydroxy group in the steroid.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: April 22, 2014
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Toshitaka Murata
  • Publication number: 20140086592
    Abstract: There is provided a power supply receiver-transmitter device, a wireless power supply receiver, and a wireless power supply transmitter which allow wireless power supply transmission and wireless data transmission and reception, and improve the usability thereof. The wireless power supply receiver-transmitter device includes: a wireless power supply receiver (PR) including a power receiver unit (RU) and a first data transmitter/receiver unit (DRU); a wireless power supply transmitter (PT) including a power transmitter unit (TU); and a second data transmitter/receiver unit (DTU). The wireless power supply receiver (PR) wirelessly receives electric power transmitted from the wireless power supply transmitter (PT), and the first data transmitter/receiver unit (DRU) bidirectionally transmits and receives data to/from the second data transmitter/receiver units (DTU) through optical communications.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 27, 2014
    Applicant: ROHM CO., LTD.
    Inventors: Ken NAKAHARA, Masayuki KITAGAWA
  • Publication number: 20130330090
    Abstract: A communication module according to the present invention includes a substrate, a laser element and a light receiving element provided on a front surface of the substrate and separating from each other, a transparent resin package collectively sealing the laser element and the light receiving element, and a diffusion unit provided to be opposed to a light emitting surface of the laser element at a prescribed distance for diffusing a laser beam emitted by the laser element, while the distance T between the laser element and the light receiving element satisfies the following formula (1): T?t1·tan ?+(t1+t2)·tan ?? . . .
    Type: Application
    Filed: February 24, 2012
    Publication date: December 12, 2013
    Applicant: ROHM CO., LTD.
    Inventors: Akira Obika, Masayuki Kitagawa
  • Patent number: 8323669
    Abstract: [Problems] To provide a novel taxane derivative which can release the medicinal substance in a bioenzyme-independent manner, is expected to have an effective therapeutic efficacy, and has a water-solubility. [Means for Solving Problems] Disclosed is a polymer conjugate of a taxane, which comprises a polymer having a polyethylene glycol moiety and two or more succinic acid monoamide moieties and a taxane, wherein a carboxylate group in the polymer and an alcoholic hydroxyl group in the taxane are bound to each other via an ester bonding.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: December 4, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Keizou Ishikawa, Takeshi Onda
  • Publication number: 20120116051
    Abstract: A polymer conjugate of a physiologically active substance, which enables drug release independent of a biological enzyme and can be expected to have a high therapeutic effect, is demanded.
    Type: Application
    Filed: May 12, 2010
    Publication date: May 10, 2012
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Masayuki Kitagawa, Chieko Seno, Keiko Ebara, Kazutoshi Takashio
  • Publication number: 20110201754
    Abstract: Disclosed is a water-soluble high-molecular weight conjugate of physiologically active substances which enable medicament to release without depending on the enzymes in a living body and which is expected to have a useful therapeutic effect. A high-molecular weight conjugate of a physiologically active substance has a substituent group represented by a general formula (1) bonded to a side-chain carboxy group of a block copolymer which has a polyethylene glycol moiety and either a polyaspartic acid moiety or a polyglutamic acid moiety.
    Type: Application
    Filed: March 17, 2009
    Publication date: August 18, 2011
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Masayuki Kitagawa, Chieko Seno
  • Patent number: RE46190
    Abstract: Enzymes in the body vary among different species, and also vary among individuals of the same species. Thus, it has been demanded to develop a novel steroid-containing pharmaceutical preparation which can release a drug in a manner independent of the enzymes present in the body, and which is expected to have an efficacious therapeutic effect. Disclosed is a high-molecular weight conjugate of a steroid, comprising a structure in which a carboxylic acid group of a polymer having a polyethylene glycol moiety and a succinic acid monoamide moiety having two or more succinic acid monoamide units is ester-bonded to a hydroxy group in the steroid.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: November 1, 2016
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Toshitaka Murata