Patents by Inventor Takeo Hokama

Takeo Hokama 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).

  • Patent number: 4661148
    Abstract: The subject matter of this invention is the new compound, pent-2-en-4-on-2-yl 2-[4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy]propanoate. This compound is useful for increasing the recoverable sugar in sugarcane.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: April 28, 1987
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Patent number: 4629497
    Abstract: The subject matter of this invention are the following sulfonamides: ##STR1## wherein X is chlorine or trifluoromethylY is chlorine or hydrogenZ is hydrogen or methyl
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: December 16, 1986
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Patent number: 4615728
    Abstract: This invention relates to a propionamides of the following structural formula: ##STR1## wherein X is chlorine or trifluoromethyl and Y is hydrogen or chlorine. The compounds of this invention are useful as sugarcane ripeners.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: October 7, 1986
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard J. Stach, Takeo Hokama
  • Patent number: 4478634
    Abstract: This invention discloses compounds of the formula: ##STR1## wherein X is halogen or trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R.sup.1 is alkyl; R.sup.2 is selected from the group consisting of hydrogen, alkyl, alkenyl and alkynyl; and R.sup.3 is selected from the group consisting of alkyl and halogen; m is an integer from 0 to 3; and n is the integer 0 or 1 and further herbicidal compositions thereof.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: October 23, 1984
    Assignee: Velsicol Chemical Corporation
    Inventor: Takeo Hokama
  • Patent number: 4443248
    Abstract: This invention discloses novel herbicidal compounds of the formula ##STR1## wherein X is selected from the group consisting of halogen, nitro, cyano and trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R.sup.1 is alkyl; R.sup.2 is selected the group consisting of hydrogen and alkyl; and R.sup.3 is selected from the group consisting of hydroxy, alkoxy, alkylthio, amino, alkylamino and dialkylamino and further herbicidal compositions and methods using said compounds.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: April 17, 1984
    Assignee: Velsicol Chemical Corporation
    Inventor: Takeo Hokama
  • Patent number: 4404018
    Abstract: This invention discloses chemical compounds of the formula ##STR1## wherein X is halogen or trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; Z is selected from the group consisting of nitro, cyano and halogen; R.sup.1 is alkyl; R.sup.2 is hydrogen or alkyl; and R.sup.3 is furfuryl or tetrahydrofurfuryl. Further discussed are herbicidal compositions utilizing the aforedescribed compounds and methods of controlling undesired vegetation therewith.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: September 13, 1983
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Takeo Hokama
  • Patent number: 4402729
    Abstract: This invention discloses compounds of the formula ##STR1## wherein X is halogen or trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R.sup.1 is alkyl; R.sup.2 is selected from the group consisting of hydrogen, alkyl, alkenyl and alkynyl; and R.sup.3 is selected from the group consisting of alkyl and halogen; m is an integer from 0 to 3; and n is the integer 0 or 1 and further herbicidal compositions thereof.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: September 6, 1983
    Assignee: Velsicol Chemical Corporation
    Inventor: Takeo Hokama
  • Patent number: 4322414
    Abstract: This invention discloses new insecticidal compounds of the formula: ##STR1## wherein each X.sup.1 and X.sup.2 is oxygen or sulfur; R.sup.1 is selected from the group consisting of alkyl, alkenyl, alkoxy, alkythio and: ##STR2## wherein X.sup.3 is oxygen or sulfur, p is the integer 0 or 1, Z is selected from the group consisting of alkyl, halogen, alkoxy, alkylthio, haloalkyl and nitro, and q is an integer from 0 to 3; R.sup.2 is selected from the group consisting of alkyl, alkenyl; Y.sup.1 and Y.sup.2 are each selected from the group consisting of alkyl, halogen, nitro, alkoxy, alkylthio and haloalkyl; and m and n are integers from 0 to 2.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: March 30, 1982
    Assignee: Velsicol Chemical Corporation
    Inventors: Takeo Hokama, James T. Traxler
  • Patent number: 4022723
    Abstract: This invention discloses pressure-sensitive adhesive compositions comprising an elastomer component and a tackifying component containing as an essential ingredient a terpolymer of styrene, isobutylene and beta-pinene.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: May 10, 1977
    Assignee: Velsicol Chemical Corporation
    Inventors: Takeo Hokama, Frank Scardiglia
  • Patent number: 4022610
    Abstract: This invention discloses mixed salts of magnesium having the empirical formula ##STR1## WHEREIN R is an organic acid radical of 7 to 20 carbon atoms; and n has an average value of from 0.5 to 1.5. The compounds of the above description are useful as herbicides.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: May 10, 1977
    Assignee: Velsicol Chemical Corporation
    Inventor: Takeo Hokama
  • Patent number: 3989658
    Abstract: This invention discloses a hot melt resinous composition comprising a primary resin, a wax and a solid, homogeneous and essentially random terpolymers of styrene, isobutylene and beta-pinene having a number average molecular weight of from about 1500 to about 7000, a styrene content of from about 40 to about 60 weight percent, an isobutylene content of from about 10 to about 40 weight percent, a beta-pinene content of from about 10 to about 40 weight percent and a ring and ball softening point of from about 160.degree. to about 240.degree. F.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: November 2, 1976
    Assignee: Velsicol Chemical Corporation
    Inventors: Takeo Hokama, Frank Scardiglia
  • Patent number: 3976607
    Abstract: A solid, homogeneous and essentially random copolymer of styrene and isobutylene having a number average molecular weight of from about 1000 to about 4000, a heterogeneity index of from about 1.50 to about 2.25 and a styrene content of from about 40 to about 90 weight percent with its higher molecular weight fractions having a higher styrene content than the average styrene content of the copolymer.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: August 24, 1976
    Assignee: Velsicol Chemical Corporation
    Inventors: Takeo Hokama, Frank Scardiglia
  • Patent number: 3959238
    Abstract: This invention discloses solid, homogeneous and essentially random terpolymers of styrene, isobutylene and beta-pinene having a number average molecular weight of from about 1500 to about 7000, a styrene content of from about 40 to about 60 weight percent, an isobutylene content of from about 10 to about 40 weight percent, a beta-pinene content of from about 10 to about 40 weight percent and a ring and ball softening point of from about 160.degree. to about 240.degree.F.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: May 25, 1976
    Assignee: Velsicol Chemical Corporation
    Inventors: Takeo Hokama, Frank Scardiglia
  • Patent number: 3941580
    Abstract: This invention discloses compounds of the formula ##SPC1##Wherein X is alkyl; t is an integer from 0 to 3; Y is a straight or branched alkylene chain of from 2 to 3 carbon atoms. The compounds of the above description are useful as herbicides which resist leaching in the soil.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: March 2, 1976
    Assignee: Velsicol Chemical Corporation
    Inventor: Takeo Hokama