Patents by Inventor Heinosuke Yasuda

Heinosuke Yasuda 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).

  • Cyclic phosphazenes, process for preparing them, flame retardant containing them as active ingredient, and resin composition containing them and molded article therefrom
    Patent number: 7317046
    Abstract: The present invention relates to cyclic phosphazenes of general formula (1) wherein Q is a halogen and/or an aryloxy group, and m is an integer of 3 to 10, which are characterized by being substantially free from linear phosphazenes of general formula (2) wherein Q is a halogen and/or an aryloxy group, and n is an integer of 1 to 20 and by having an extremely low content of halogen, and which are appropriate to flame retardants for resins; processes for preparing the same; flame retardants containing the same as an active ingredient; resin compositions containing the cyclic phosphazenes; and molded articles therefrom.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: January 8, 2008
    Assignee: Chemipro Kasei Kaisha, Limited
    Inventors: Naohiko Fukuoka, Heinosuke Yasuda, Masayuki Nishimatsu, Yoshinori Ohmae
  • Cyclic phosphazenes, process for preparing them, flame retardants containing the same as the active ingredient, and resin composition containing and molded articles containing the flame retardants
    Publication number: 20040152910
    Abstract: The present invention relates to cyclic phosphazenes of general formula (1) 1
    Type: Application
    Filed: December 1, 2003
    Publication date: August 5, 2004
    Inventors: Naohiko Fukuoka, Heinosuke Yasuda, Masayuki Nishimatsu, Yoshinori Ohmae
  • Aminomethylene derivatives and ultraviolet absorbent comprising thereof
    Patent number: 6114546
    Abstract: The present invention provides an aminomethylene derivative represented by general formula (I): ##STR1## wherein A is a cyclic oxo group selected from the group consisting of following general formulae (a), (b), (c), (d) and (e): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represent H, an alkyl group or the like; R.sup.6, R.sup.7 and R.sup.8 each independently represent an alkyl group or the like; R.sup.1 and R.sup.2 or R.sup.7 and R.sup.8 may combine with each other to form a tetramethylene group or the like; R represents an alkyl group optionally containing OH or O; and n is an integer of 0 to 4, a process for the same, and the use thereof. The derivatives have an excellent ultraviolet absorption ability and a high optical stability.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: September 5, 2000
    Assignee: Chemipro Kasei Kaisha, Limited
    Inventors: Heinosuke Yasuda, Naohiko Hukuoka