Patents by Inventor Yuji Tokunaga

Yuji Tokunaga 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: 20240109734
    Abstract: A conveyance equipment includes swirl flow-forming body, discharge fluid rectification cover and skirt. The swirl flow-forming body has columnar first body. A columnar recess is inward of lower end face of first body. A pair of fluid passages are formed in columnar first body to extend to inside surface of columnar recess and supply fluid into columnar recess to generate swirling flow. The discharge fluid rectification cover has a second body which includes a disk-shaped base plate and a peripheral wall that extends around the periphery of the base plate. The second body is positioned to cover the columnar recess. A suction port is in the bottom plate. A discharge passage is in the peripheral wall to extend generally tangential to the inside surface of peripheral wall. The skirt is cylindrical and is made of an elastic thin film, a top opening of which is connected to the suction port.
    Type: Application
    Filed: March 25, 2022
    Publication date: April 4, 2024
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Katsuhiro KOSHIISHI, Hidemitsu TANAKA, Yuji KASAI, Naonari IWASAKA
  • Patent number: 11655428
    Abstract: A lubricating oil composition includes an ethylene/?-olefin copolymer (A) having 70 to 90 mole % of structural units derived from ethylene and an intrinsic viscosity [?] of 0.3 to 1.0 dl/g.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: May 23, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Akio Hayakawa, Akihiro Udagawa, Noriko Kai, Yuji Tokunaga
  • Publication number: 20210130725
    Abstract: A lubricating oil composition includes an ethylene/?-olefin copolymer (A) having 70 to 90 mole % of structural units derived from ethylene and an intrinsic viscosity [?] of 0.3 to 1.0 dl/g.
    Type: Application
    Filed: April 16, 2019
    Publication date: May 6, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akio HAYAKAWA, Akihiro UDAGAWA, Noriko KAI, Yuji TOKUNAGA
  • Patent number: 6524556
    Abstract: The use of a medium-chain fatty acid triglyceride as the dispersant in the preparation of a medicinal aerosol composition comprising tricyclic compound (I) dispersed in a liquefied hydrofluoroalkane propellant is described. When a liquefied hydrofluoroalkane is added to a kneaded premix of the tricyclic compound (I) and a medium-chain fatty acid triglyceride, the active ingredient is evenly dispersed in the liquefied hydrofluoroalkane. Therefore, by distributing a dispenser first with the kneaded premix and, then, with a liquefied hydrofluoroalkane under cooling or elevated pressure, there can be provided a medicinal aerosol composition an improved uniformity of content of the active ingredient.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: February 25, 2003
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Saburo Murata, Fumio Shiomojo, Yuji Tokunaga, Takehisa Hata
  • Publication number: 20020061906
    Abstract: The use of a medium-chain fatty acid triglyceride as the dispersant in the preparation of a medicinal aerosol composition comprising tricyclic compound (I) dispersed in a liquefied hydrofluoroalkane propellant is described.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 23, 2002
    Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.
    Inventors: Saburo Murata, Fumio Shiomojo, Yuji Tokunaga, Takehisa Hata
  • Patent number: 6361760
    Abstract: The use of a medium-chain fatty acid triglyceride as the dispersant in the preparation of a medicinal aerosol composition comprising tricyclic compound (I) dispersed in a liquefied hydrofluoroalkane propellant is described. When a liquefied hydrofluoroalkane is added to a kneaded premix of the tricyclic compound (I) and a medium-chain fatty acid triglyceride, the active ingredient is evenly dispersed in the liquefied hydrofluoroalkane. Therefore, by distributing a dispenser first with the kneaded premix and, then, with a liquefied hydrofluoroalkane under cooling or elevated pressure, there can be provided a medicinal aerosol composition having an improved uniformity of content of the active ingredient.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: March 26, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Saburo Murata, Fumio Shiomojo, Yuji Tokunaga, Takehisa Hata
  • Patent number: 6346537
    Abstract: To provide a pharmaceutical composition comprising a water-insoluble active substance, surfactant(s) and solid carrier(s), which is improved in dissolution and oral absorption characteristics.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: February 12, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Takehisa Hata, Yuji Tokunaga, Fumio Shimojo, Sumihisa Kimura, Takeo Hirose, Satoshi Ueda
  • Patent number: 5817333
    Abstract: A liposome preparation containing an immunosuppresive tricylic compound or a pharmaceutically acceptable salt thereof. Since the tricyclic compound is entrapped stably and quantitatively into the liposomes, a broad variety of drug forms and pharmaceutical preparations insuring a long duration of efficacy can be provided.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: October 6, 1998
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Akira Kagayama, Yuji Tokunaga, Atsunori Kaibara, Sachiyo Tanimoto, Takehisa Hata
  • Patent number: 5152999
    Abstract: The present invention relates to liposome preparations. In particular, the present invention relates to Adriamycin-entrapped liposome preparations comprising cholesterol derivatives having a negative charge as a liposome membrane constituent. Adriamycin-entrapped liposome preparations have many uses in the medical field such as maintaining high Adriamycin blood levels over a long period of time and reducing systemic toxicity, for example.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: October 6, 1992
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Yuji Tokunaga, Takao Yamamoto, Takehisa Hata
  • Patent number: 4772594
    Abstract: The invention relates to a novel prodrug compound useful in the treatment of tumors, of the formula:A--CO(CH.sub.2).sub.m (NHCO).sub.n --RwhereinA is a residue of an antitumor substance having >NH or --NH.sub.2 group in the molecule,R is a residue of cholesterol,m is an integer of 1 or 2 andn is 0 or 1,and its salts.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: September 20, 1988
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masashi Hashimoto, Hidekazu Takeno, Hiroshi Kayakiri, Akira Kagayama, Yuji Tokunaga, Tomoaki Iwasa