Patents by Inventor Linas R. Stasaitis

Linas R. Stasaitis 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: 6540793
    Abstract: Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): wherein R is selected from the group consisting of C1 to C2 alkyl and hydroxyethyl; R1 is selected from the group consisting of a hydrogen, hydroxy, nitro, halogen, C1 to C5 alkyl or haloalkyl, C1 to C5 alkoxy or cycloalkoxy, C1 to C5 hydroxyalkyl and C1 to C5 hydroxyalkoxy; Ar is an aromatic group, preferably an aromatic group selected from the group consisting of a furyl, thienyl, pyridyl, phenyl, 2,3-dihydro-benzo[1,4]dioxin-5 or -6-yl or benzo[1,3]dioxol-4 or -5-yl group; and y=1 to 3.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: April 1, 2003
    Assignee: Clairol Incorporated
    Inventors: Mu-lll Lim, Linas R. Stasaitis, Yuh-Guo Pan
  • Patent number: 6342079
    Abstract: 1-(2,5-Diaminophenyl)ethanol useful as a primary intermediate for the oxidative dyeing of hair.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: January 29, 2002
    Assignee: Bristol-Myers Squibb Company
    Inventors: Yuh-Guo Pan, Mu-Ill Lim, Linas R. Stasaitis
  • Patent number: 6228130
    Abstract: 5-Nitroisatin is reacted with sodium hydroxide to produce an &agr;-keto acid sodium salt that is reduced with borane-tetrahydrofuran complex and then hydrogenated to produce 1-(2,5-diaminophenyl)ethylene glycol, a novel compound useful as a primary intermediate in the production of oxidative hair dyes.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: May 8, 2001
    Assignee: Bristol-Myers Squibb Company
    Inventors: Mu-Ill Lim, Linas R. Stasaitis, Yuh-Guo Pan, Michael Y. M. Wong
  • Patent number: 6200353
    Abstract: Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula at least one coupler comprising a compound of the formula: wherein R is selected from the group consisting of C1 to C2 alkyl and hydroxyethyl, R1 is selected from the group consisting of hydrogen, chlorine, bromine, C1 to C3 alkyl, C1 to C3 alkoxy, C1 to C3 hydroxyalkyl and C1 to C3 hydroxyalkoxy, and X is O, S or NH.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: March 13, 2001
    Assignee: Bristol Myers Squibb Company
    Inventors: Mu-Ill Lim, Linas R. Stasaitis, Yuh-Guo Pan
  • Patent number: 6074438
    Abstract: The invention provides compositions and methods for the oxidative coloring of human hair. The compositions of the invention contain as a primary intermediate at least one aminophenol of the formulas: ##STR1## or a cosmetically acceptable salt thereof, and at least one pyrazolone coupler of the formulas: ##STR2## or a cosmetically acceptable salt thereof. The compositions may also contain one or more other primary intermediates and conventional coupling compounds, in addition to an oxidizing agent and other components typically used in oxidative hair dye preparations.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: June 13, 2000
    Assignee: Bristol-Myers Squibb Co.
    Inventors: Mu-Ill Lim, Yuh-Guo Pan, Linas R. Stasaitis
  • Patent number: 6045590
    Abstract: Compounds of Formula II ##STR1## wherein R.sub.3 is --COOCH.sub.3, --COCH.sub.3 or --COCH.sub.2 CH.sub.3 and R.sub.4 is hydrogen or R.sub.3 is hydrogen and R.sub.4 is --OCH.sub.3, --OC.sub.2 CH.sub.3, --OCH.sub.2 CH.sub.2 OH or --OCH.sub.2 CH.sub.2 OCH.sub.3 are storage stable and can be used in oxidative hairdye systems in place of the storage unstable 2-methyl-1-naphthol. Advantageously, it has been found to produce the same colors as 2-methyl-1-naphthol.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: April 4, 2000
    Assignee: Bristol-Myers Squibb Co.
    Inventors: Mu-Ill Lim, Yuh-Guo Pan, Linas R. Stasaitis, John D. O'Donoghue
  • Patent number: 5980584
    Abstract: The novel primary intermediate, 1-(5-amino-2-hydroxyphenyl)ethane-1,2-diol and a method for producing same, are disclosed. The novel intermediate can be employed as a replacement for p-aminophenol in oxidation dye formulations.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: November 9, 1999
    Assignee: Bristol-Myers Squibb Company
    Inventors: Mu-III Lim, Linas R. Stasaitis, Yuh-Guo Pan, Michael Y. M. Wong
  • Patent number: 5865854
    Abstract: The invention provides compositions and methods containing novel bis-(2,4-diaminophenoxy)benzene coupling compounds, and cosmetically acceptable salts thereof, for use with conventional primary intermediate dye compounds and oxidizing agents for the oxidative coloring of human hair. The compositions of the invention may also contain other components typically used in oxidative hair dye preparations to impart intense and lasting coloration to hair.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: February 2, 1999
    Assignee: Bristol-Myers Squibb Company
    Inventors: Mu-Iii Lim, Yuh-Guo Pan, Linas R. Stasaitis
  • Patent number: 5672180
    Abstract: Compounds of Formula II ##STR1## wherein R.sub.3 is --COOCH.sub.3, --COCH.sub.3 or --COCH.sub.2 CH.sub.3 and R.sub.4 is hydrogen or R.sub.3 is hydrogen and R.sub.4 is --OCH.sub.3, --OCH.sub.2 CH.sub.3, --OCH.sub.2 CH.sub.2 OH or --OCH.sub.2 CH.sub.2 OCH.sub.3 are storage stable and can be used in oxidative hairdye systems in place of the storage unstable 2-methyl-1-naphthol. Advantageously, it has been found to produce the same colors as 2-methyl-1-naphthol.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: September 30, 1997
    Assignee: Clairol Incorporated
    Inventors: Mu-Ill Lim, Yuh-Guo Pan, Linas R. Stasaitis, John D. O'Donoghue
  • Patent number: 5529583
    Abstract: Compounds of Formula II ##STR1## wherein R.sub.3 is --COCH.sub.3, --COCH.sub.3 or --COCH.sub.2 CH.sub.3 and R.sub.4 is hydrogen or R.sub.3 is hydrogen and R.sub.4 is --OCH.sub.3, --OCH.sub.2 CH.sub.3, --OCH.sub.2 CH.sub.2 OH or --OCH.sub.2 CH.sub.2 OCH.sub.3 are storage stable and can be used in oxidative hairdye systems in place of the storage unstable 2-methyl-1-naphthol. Advantageously, it has been found to produce the same colors as 2-methyl-1-naphthol.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: June 25, 1996
    Assignee: Clairol Incorporated
    Inventors: Mu-Ill Lim, Yuh-Guo Pan, Linas R. Stasaitis, John D. O'Donoghue