Patents by Inventor by Kenji W. Higuchi, co-executor

by Kenji W. Higuchi, co-executor 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).

  • Polycyclic nitriles
    Patent number: 4910314
    Abstract: There is provided a fluorescent adduct which is amenable to detection by fluorometric and electrochemical techniques. The adduct is of the formula: ##STR1## wherein X is a radical derived from a primary amine of the formula X--NH.sub.2 and where R.sub.1 --R.sub.6 are selected from various organic or inorganic substituents.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: March 20, 1990
    Assignee: Oread Laboratories, Inc.
    Inventors: Pierre M. R. de Montigny, Larry A. Sternson, Arnold J. Repta, John F. Stabaugh, Takeru Higuchi, deceased, by Martin B. Dickinson, Jr., co-executor, by Kenji W. Higuchi, co-executor
  • Imidazolin-2-ones
    Patent number: 4845233
    Abstract: A compound having the formula: ##STR1## wherein R, R.sub.1 and R.sub.2 are independently selected from hydrogen; hydroxy; fluorine; bromine; chlorine; C.sub.1 -C.sub.20 alkyl; C.sub.2 -C.sub.20 alkenyl; C.sub.2 -C.sub.20 alkynyl; C.sub.3 -C.sub.10 cycloalkyl; C.sub.2 -C.sub.20 (monohydroxy or polyhydroxy)alkyl; C.sub.1 -C.sub.20 (monohalo or polyhalo)alkyl; carboxy; C.sub.1 -C.sub.20 alkylcarboxy; C.sub.1 -C.sub.20 alkenylcarboxy; C.sub.1 -C.sub.20 carboxyalkyl; C.sub.1 -C.sub.20 alkanoyl; C.sub.1 -C.sub.20 alkanoyloxy; C.sub.1 -C.sub.20 alkoxycarbonyl; carbamoyl; carbamyl; C.sub.1 -C.sub.20 alkylcarbamyl; sulfo; C.sub.1 -C.sub.20 alkylsulfonyl; C.sub.1 -C.sub.20 alkylsulfinyl; C.sub.1 -C.sub.20 alkylsulfoxide; C.sub.1 -C.sub.20 alkylsulfone; thio; C.sub.1 -C.sub.20 alkylthio; amino; nitro; C.sub.1 -C.sub.20 alkylamino; C.sub.1 -C.sub.20 aminoalkyl; substituted or unsubstituted phenyl or benzyl, the substituents being selected from hydroxy, fluorine, bromine, chlorine, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: July 4, 1989
    Assignee: IPRX, Inc.
    Inventors: Takeru Higuchi, deceased, by Kenji W. Higuchi, co-executor, Ooi Wong
  • Assaying method for primary amines using aromatic dialdehydes
    Patent number: 4837166
    Abstract: A method of assaying primary amines or cyanide is disclosed. The process is carried out by reacting a substituted or unsubstituted naphthalene-2,3-dicarboxaldehyde or o-phthalaldehyde, reactive with primary amines and cyanide, with cyanide ions and at least one primary amine to form an adduct amenable to fluorometric or electrochemical assaying techniques. The adduct is then fluorometrically or electrochemically assayed.Also disclosed are 1-cyano-benz[f]isoindole adducts.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: June 6, 1989
    Assignee: Oread Laboratories, Inc.
    Inventors: Pierre M. R. de Montigny, Larry A. Sternson, Arnold J. Repta, John F. Stobaugh, Takeru Higuchi, deceased, Kenji W. Higuchi, co-executor