Patents by Inventor Hideo Kakuta

Hideo Kakuta 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).

  • Physiologically active substances of plant, process for the preparation thereof, and utilities thereof
    Patent number: 5591697
    Abstract: The present invention relates to compounds represented by the following formula (I) ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 independently represent a hydrogen atom, or an acetyl or benzyl group, R.sup.6 represents a hydrogen atom, a hydroxyl, acetoxy, or benzyloxy group, R.sup.7 represents a hydrogen atom, or R.sup.6 and R.sup.7 together may represent another direct bond, and R.sup.8 represents a carboxyl, methoxycarbonyl, hydroxymethyl, or acetoxymethyl group) or salts thereof and a process for the preparation thereof, as well as their utilities in a method for culture, a method for the growth inhibition of moyashi roots, and a method for the growth promotion of moyashi hypocotyls.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: January 7, 1997
    Assignee: Research Development Corporation of Japan
    Inventors: Koji Hasegawa, Hideo Kakuta, Junya Mizutani
  • Physiologically active substances of plant, process for the preparation thereof, and utilities thereof
    Patent number: 5512673
    Abstract: The present invention relates to compounds represented by the following formula (I) ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 independently represent a hydrogen atom or an acetyl or benzyl group, R.sup.6 represents a hydrogen atom, a hydroxyl, acetoxy, or benzyloxy group, R.sup.7 represents a hydrogen atom, or R.sup.6 and R.sup.7 together my represent another direct bond, and R.sup.8 represents a carboxyl, methoxycarbonyl, hydroxymethyl, or acetoxymethyl group) or salts thereof and a process for the preparation thereof, as well as their utilities in a method for culture, a method for the growth inhibition of moyashi roots, and a method for the growth promotion of moyashi hypocotyls.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 30, 1996
    Assignee: Research Development Corporation of Japan
    Inventors: Koji Hasegawa, Hideo Kakuta, Junya Mizutani
  • Physiologically active substances of plant, process for the preparation thereof, and utilities thereof
    Patent number: 5455345
    Abstract: The present invention relates to compounds represented by the following formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 independently represent a hydrogen atom or an acetyl or benzyl group, R.sup.6 represents a hydrogen atom a hydroxyl, acetoxy, or benzyloxy group, R.sup.7 represents a hydrogen atom or R.sup.6 and R.sup.7 together my represent another direct bond, and R.sup.8 represents a carboxyl, methoxycarbonyl, hydroxymethyl, or acetoxymethyl group or salts thereof and a process for the preparation thereof, as well as their utilities in a method for culture, a method for the growth inhibition of moyashi roots, and a method for the growth promotion of moyashi hypocotyls.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: October 3, 1995
    Assignee: Research Development Corporation of Japan
    Inventors: Koji Hasegawa, Hideo Kakuta, Junya Mizutani