Patents by Inventor Akio Ajima

Akio Ajima 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).

  • POWER CONVERTER
    Publication number: 20250079999
    Abstract: A power converter includes a capacitor, a substrate on which a plurality of switching elements for power conversion are mounted, a housing that accommodates the substrate, and a plurality of lines. Each line is electrically connected to the capacitor and many of the plurality of switching elements. At least one line among the plurality of lines includes a conductive pattern formed on the substrate.
    Type: Application
    Filed: November 18, 2024
    Publication date: March 6, 2025
    Inventors: Yuji SUZUKI, Motohito HORI, Akio TOBA, Ikuya SATO, Yasuhito TANAKA, Masamichi IWASAKI, Masaaki AJIMA, Nobuaki OHGURI
  • Rhodanine derivatives, process for their preparation, and aldose reductase inhibitor containing the rhodanine derivatives as active ingredient
    Patent number: 4831045
    Abstract: The rhodanine derivatives of the general formula: ##STR1## [wherein (I) R.sup.1 and R.sup.2 are taken together to represent a tetramethylene or pentamethylene group; (II) R.sup.1 represents a hydrogen atom, and R.sup.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: May 16, 1989
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Tadao Tanouchi, Masanori Kawamura, Akio Ajima, Tetsuya Mohri, Masaki Hayashi, Hiroshi Terashima, Fumio Hirata, Takeshi Morimura
  • Rhodanine derivatives, process for their preparation, and aldose reductase inhibitor containing the rhodanine derivatives as active ingredients
    Patent number: 4791126
    Abstract: The rhodanine derivatives of the general formula: ##STR1## [wherein (I) R.sup.1 and R.sup.2 are taken together to represent a tetramethylene or pentamethylene group; (II) R.sup.1 represents a hydrogen atom, and R.sup.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: December 13, 1988
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Tadao Tanouchi, Masanori Kawamura, Akio Ajima, Tetsuya Mohri, Masaki Hayashi, Hiroshi Terashima, Fumio Hirata, Takeshi Morimura
  • Rhodanine derivatives, process for their preparation, and aldose reductase inhibitor containing the rhodanine derivatives as active ingredient
    Patent number: 4464382
    Abstract: The rhodanine derivatives of the general formula: ##STR1## wherein (I) R.sup.1 and R.sup.2 are taken together to represent a tetramethylene or pentamethylene group; (II) R.sup.1 represents a hydrogen atom, and R.sup.2 represents (1) a cycloalkyl or cycloalkenyl group of 4-7 carbon atoms which is unsubstituted or substituted by at least one alkyl group of 1-4 carbon atoms, (2) an anthryl or naphthyl group, (3) a phenyl group which is unsubstituted or substituted, (4) a heterocyclic group containing at least one of nitrogen, oxygen and sulfur atoms which is unsubstituted or substituted (5) a ##STR2## group (wherein R.sup.4 represents a hydrogen atom, a halogen atom, phenyl group or an alkyl group of 1-5 carbon atoms; and R.sup.5 represents a hydrogen atom, a phenyl group or an alkyl group of 1-5 carbon atoms) or ##STR3## group; or (III) R.sup.1 and R.sup.2, which may be the same or different with each other, each represents a phenyl group which is unsubstituted or substituted; and R.sup.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: August 7, 1984
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Tadao Tanouchi, Masanori Kawamura, Akio Ajima, Tetsuya Mohri, Masaki Hayashi, Hiroshi Terashima, Fumio Hirata, Takeshi Morimura