Patents by Inventor Masashi Uehata

Masashi Uehata 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).

  • Flux and solder paste
    Patent number: 9902022
    Abstract: Provided is a flux which can remove metal oxides to improve solder wettability and can fix the object to be soldered with flux residue. The flux contains thermosetting resin, and long-chain dibasic acid mixture including one or more species of first long-chain dibasic acid having an alkyl group in a side chain, the first long-chain dibasic acid being added as a hardening agent for hardening the thermosetting resin and an activator, and second long-chain dibasic acid having an alkyl group and an alkoxycarbonyl group in a side chain and having carbon number of 8 or more in a main chain between the carboxyl groups at opposite terminals. It is preferable that content of the thermosetting resin is 30% through 70% and content of the long-chain dibasic acid mixture is 20% through 60%.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: February 27, 2018
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Masashi Uehata, Yasuyuki Yamagawa, Kazuya Kitazawa, Yoshinori Takagi
  • Flux and Solder Paste
    Publication number: 20170190005
    Abstract: Provided is a flux which can remove metal oxides to improve solder wettability and can fix the object to be soldered with flux residue. The flux contains thermosetting resin, and long-chain dibasic acid mixture including one or more species of first long-chain dibasic acid having an alkyl group in a side chain, the first long-chain dibasic acid being added as a hardening agent for hardening the thermosetting resin and an activator, and second long-chain dibasic acid having an alkyl group and an alkoxycarbonyl group in a side chain and having carbon number of 8 or more in a main chain between the carboxyl groups at opposite terminals. It is preferable that content of the thermosetting resin is 30% through 70% and content of the long-chain dibasic acid mixture is 20% through 60%.
    Type: Application
    Filed: February 27, 2015
    Publication date: July 6, 2017
    Applicant: Senju Metal Industry Co., Ltd
    Inventors: Masashi Uehata, Yasuyuki Yamagawa, Kazuya Kitazawa, Yoshinori Takagi
  • Composition comprising long chain dibasic acids and electrolytic solution using thereof
    Patent number: 6258288
    Abstract: A mixture of long-chain dibasic acids comprising one or more long-chain dibasic acid having an alkyl group at its side chain and one or more long chain dibasic acid having a carbon chain of 8 or more carbon atoms between both its carboxyl groups and having an alkyl group and one or more alkoxycarbonyl group at its side chain is provided. This mixture can be used as the electrolyte of an electrolytic solution for electrolytic capacitors. This electrolytic solution can be produced very simply, hardly raises any precipitation at low temperatures and is tolerant to high voltage.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: July 10, 2001
    Assignee: Okamura Oil Mills, Ltd.
    Inventors: Noritaka Miyoshi, Kazuhisa Takii, Masashi Uehata