Patents by Inventor Yoshihiro Konagai

Yoshihiro Konagai 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).

  • Polycationic polymer and polycationic microbicidal and algaecidal agent
    Patent number: 5616317
    Abstract: A polycationic microbicidal and algaecidal agent containing as an active ingredient a polymer comprising repeating units represented by the formula (I) and having a number average molecular weight of at least 1,000, and a microbicidal and algaecidal method using the polymer: ##STR1## (wherein A is a single bond, an oxygen atom, a phenylene group, a dioxyethylene group or a tetramethyldisiloxane group, X.sub.1.sup.- and X.sub.2.sup.- may be the same or different and are counter anions in quaternary salts, p and q may be the same or different and are integers of from 1 to 6, and m is an integer of from 1 to 6, provided that A, X.sub.1.sup.-, X.sub.2.sup.-, p, q and m may be the same or optionally different for every repeating unit).
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: April 1, 1997
    Assignees: Sagami Chemical Research Center, K.multidot.I Chemical Industry Co., Ltd.
    Inventors: Yu Nagase, Takao Aoyagi, Tomoko Akimoto, Kazunori Tanaka, Kouichi Iwabuchi, Yoshihiro Konagai
  • Stabilized non-medical fungicidal, bactericidal and algicidal composition
    Patent number: 4022605
    Abstract: A halocyanoacetamide compound having the formula: ##STR1## wherein X is a halogen such as Cl, F, Br and I; Y represents a halogen such as chlorine, fluorine, bromine and iodine or hydrogen atom; andR represents a hydrogen atom or a lower alkyl group containing from 1 to 8 carbon atoms, is stabilized with an organic carboxylic acid or a diol.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: May 10, 1977
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Kazumi Konya, Yoshihiro Konagai, Makoto Muto, Hironari Sato, Yoshio Takahashi
  • Stabilized non-medical fungicidal, bactericidal and algicidal composition
    Patent number: RE29826
    Abstract: A halocyanoacetamide compound having the formula: ##STR1## wherein X is a halogen such as Cl, F, Br and I; Y represents a halogen such as chlorine, fluorine, bromine and iodine or hydrogen atom; andR represents a hydrogen atom or a lower alkyl group containing from 1 to 8 carbon atoms, is stabilized with an organic carboxylic acid or a diol.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: November 7, 1978
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Kazumi Konya, Yoshihiro Konagai, Makoto Muto, Hironari Sato, Yoshio Takahashi