Patents Assigned to Yoshiro Nakamura
  • Heat transfer promoters and method of using the same
    Patent number: 4801394
    Abstract: A heat transfer promoter composition comprises a triazine-dithiol derivative represented by the general formula ##STR1## wherein R represents --NHR' or --NR'.sub.2 wherein: R' is a hydrocarbon group; M is selected from the group consisting of hydrogen, alkali metals, and alkaline earth metals; and at least one of M groups is alkaline metal or alkaline earth metal. This heat transfer promotor is applied to that surface of a condenser tube to be contacted by a vapor to be condensed.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: January 31, 1989
    Assignees: Yoshiro Nakamura, Kunio Mori, Kabushiki Kaisha Toshiba
    Inventors: Yoshiro Nakamura, Kunio Mori, Minoru Okumura, Yoshio Mochida, Matsuo Miyazaki
  • Heat transfer promoters and method of using the same
    Patent number: 4601933
    Abstract: A heat transfer promoter composition comprises a triazine-dithiol derivative represented by the general formula ##STR1## wherein R represents --NHR' or --NR'.sub.2 wherein: R' is a hydrocarbon group; M is selected from the group consisting of hydrogen, alkali metals, and alkaline earth metals; and at least one of M groups is alkaline metal or alkaline earth metal. This heat transfer promotor is applied to that surface of a condenser tube to be contacted by a vapor to be condensed.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: July 22, 1986
    Assignees: Yoshiro Nakamura, Kunio Mori, Kabushiki Kaisha Toshiba
    Inventors: Yoshiro Nakamura, Kunio Mori, Minoru Okumura, Yoshio Mochida, Matsuo Miyazaki