Patents Examined by Margaret Einsman
  • Patent number: 6887281
    Abstract: The new N-heteroarylmethyl-p-phenylenediamine derivatives have the general formula (I), Oxidation hair dyeing agents are described based on a combination of developing and coupling substance, which contain at least one N-heteroarylmethyl-phenylenediamine derivative of the formula (I), or a physiologically tolerated salt thereof.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: May 3, 2005
    Assignee: Wella Aktiengesellschaft
    Inventors: Laurent Chassot, Hans-Juergen Braun
  • Patent number: 6770103
    Abstract: A method for permanently dyeing hair is provided which includes subjecting the hair to a number of treatments, having a set time interval between each two consecutive such treatments, and wherein each treatment comprises contacting the hair for a period from about 5 seconds to about 3 minutes with a recently made mixture of an alkaline and an acidic composition, followed by a rinsing step. A shampoo or conditioner base is present in the alkaline and acidic compositions.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: August 3, 2004
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Jitendra Patel, Gerald Patrick Newell, Margie Fowler
  • Patent number: 5830241
    Abstract: There is described a liquid preparation comprising:a) 10 to 40 % by weight of the fluorescent whitening agent having the formula: ##STR1## wherein M is hydrogen, an alkali metal, ammonium or magnesium; b) 10 to 85% by weight of polyethylene glycol having a mean molecular weight in the range of from 150 to 500;c) 0 to 75% by weight of water; andd) 0 to 20% by weight of one or more auxiliary compounds; each based on the total weight of the liquid preparation.The new formulation is suitable for the fluorescent whitening of paper or detergents, and is stable over a wide range of temperature.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: November 3, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Peter Rohringer, Marc Roger Grienenberger
  • Patent number: 5484457
    Abstract: Process for the continuous production of surface dyeings on cellulose fiber textile materials, characterized in that the textile materials are treated with an aqueous liquor containing at least 5 g/l of benzyl halide quaternized condensation products of precondensates of trialkanolamines and ureas, cyclic carbonates and/or epihalohydrins and/or benzyl chloride quaternized condensation products of piperazine and epichloronydrin, and 0.02 to 1 g/l of a phosphoric triester whose alcohol component has 6 to 18 carbon atoms, the textile materials thus treated are then dyed in another bath with reactive dyes in an aqueous medium and the dyes are fixed by treatment with an alkaline aqueous liquor and the dyeing finished in conventional manner. The individual cellulose fibers of the textile material are not completely penetrated by the dye but, on the contrary, exhibit ring dyeing.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: January 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg Schulze, Harald Schlueter, Kurt Bacher, Wolfgang Schrott, Erich Kromm
  • Patent number: 5256193
    Abstract: An ink composition comprised of a solution comprised of a dye comprised of a porphyrin chromophore and a dendrimer.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 26, 1993
    Assignee: Xerox Corporation
    Inventors: Francoise M. Winnik, Anthony R. Davidson, Marcel P. Breton
  • Patent number: 5254157
    Abstract: A recording solution including a coloring matter and a liquid medium, wherein said recording solution contains a compound obtained by alkylation or acetylation of one or two hydroxyl group(s) of a triol having 4 or more carbon atoms.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: October 19, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Koike, Kyoko Fukushima, Koromo Shirota
  • Patent number: 5213846
    Abstract: A corrosion resistant coating composition comprising (i) 100 parts by weight of a bisphenol type epoxy resin comprising bisphenol skeletons and epichlorohydrin skeletons and having at least two epoxy groups per molecule, said bisphenol skeletons comprising bisphenol A skeletons and bisphenol F skeletons in a weight ratio of from 95:5 to 60:40, and (ii) from 5 to 400 parts by weight of silica particles.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: May 25, 1993
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Kazuyoshi Tsuneta, Masanori Nagai, Osamu Ogawa, Osamu Tanida