Patents by Inventor Andre Pugin

Andre Pugin 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: 4872915
    Abstract: The invention relates to orthorhombic lead chromate pigments of greenish hue, which contain lead chromate and lead sulfate in the weight ratio of 60:40 to 100:0, and which are characterized by a tinctorial strength of 0.067 to 0.103 at a standard depth of shade of 1/25 in accordance with DIN 53 235 and by an opacity factor Y.sub.black /Y.sub.white of 0.78 to 0.87. These pigments are obtainable by mixing an aqueous solution of a chromate and, if necessary, of a sulfate, under high turbulence.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: October 10, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Leonardus J. H. Erkens, Gerben P. Algra, Jacobus M. H. Snijders, Herman J. J. M. Geurts, Andre Pugin
  • Patent number: 4769310
    Abstract: A method of laser marking ceramic materials, glazes, glass ceramics and glasses that contain at least one radiation-sensitive additive, utilizing a laser beam as radiation energy source which is either applied to, or focused on, the surface of the material to be marked in accordance with the form of the graphic symbols to be reproduced, such that a change in color is induced at the irradiated areas, wherein the wavelength of said laser beam used as energy source is in the near UV and/or visible range and/or infra-red range, and the radiation-sensitive additive is an inorganic pigment.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: September 6, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Heinrich Gugger, Fritz Herren, Manfred Hofmann, Andre Pugin
  • Patent number: 4530924
    Abstract: A process for combating micro-organisms in or on organic or inorganic substrates and for protecting the said substrates against attack by micro-organisms, which comprises treating the substrates with a water-soluble phthalocyanine derivative, in the presence of oxygen and water and while irradiating with light in the infra-red and/or visible range, antimicrobical agents containing water-soluble phthalocyanine compounds as well as new phthalocyanine compounds are described.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: July 23, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Polony, Gerhard Reinert, Gerd Holzle, Andre Pugin, Rodolphe Vonderwahl
  • Patent number: 4460768
    Abstract: 1:1 Nickel complexes of azines of the formula I or of a tautomer thereof ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is methyl or carbamoyl, R.sub.3 is hydrogen or chlorine, R.sub.4 is hydrogen, chlorine, methyl, trifluoromethyl or sulfamoyl, R.sub.5 is hydrogen or chlorine, R.sub.6 is hydrogen, chlorine, bromine, methyl, methoxy, trifluoromethyl, carbamoyl or alkanoylamino containing 2 to 4 carbon atoms, with the proviso that, if R.sub.2 is carbamoyl, at least two of the substituents R.sub.3 to R.sub.6 are halogen atoms and/or trifluoromethyl groups, color plastics, lacquers and printing inks in orange to red shades of outstanding fastness properties.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: July 17, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Abul Iqbal, Paul Lienhard, Andre Pugin
  • Patent number: 4355159
    Abstract: 1:1 Nickel complexes of azines of the formula I or of a tautomer thereof ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is methyl or carbamoyl, R.sub.3 is hydrogen or chlorine, R.sub.4 is hydrogen, chlorine, methyl, trifluoromethyl or sulfamoyl, R.sub.5 is hydrogen or chlorine, R.sub.6 is hydrogen, chlorine, bromine, methyl, methoxy, trifluoromethyl, carbamoyl or alkanoylamino containing 2 to 4 carbon atoms, with the proviso that, if R.sub.2 is carbamoyl, at least two of the substituents R.sub.3 to R.sub.6 are halogen atoms and/or trifluoromethyl groups, color plastics, lacquers and printing inks in orange to red shades of outstanding fastness properties.
    Type: Grant
    Filed: May 13, 1980
    Date of Patent: October 19, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Abul Iqbal, Paul Lienhard, Andre Pugin
  • Patent number: 4318883
    Abstract: A process for combating micro-organisms in or on organic or inorganic substrates and for protecting the said substrates against attack by micro-organisms, which comprises treating the substrates with a water-soluble phthalocyanine derivative, in the presence of oxygen and water and while irradiating with light in the infra-red and/or visible range, antimicrobical agents containing water-soluble phthalocyanine compounds as well as new phthalocyanine compounds are described.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: March 9, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Polony, Gerhard Reinert, Gerd Holzle, Andre Pugin, Rodolphe Vonderwahl
  • Patent number: 4237292
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost von der Crone
  • Patent number: 4237293
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost von der Crone
  • Patent number: 4237286
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost von der Crone
  • Patent number: 4166718
    Abstract: A process for bleaching textiles which comprises treating stained textiles in an aqueous bath containing at least one water-soluble aluminium phthalocyanine, under irradiation with light and in the presence of oxygen, while either irradiating the bleaching bath direct or subsequently irradiating the moist textiles outside the bath, as well as water-soluble aluminium phthalocyanines containing detergent compositions are described.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: September 4, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerhard Reinert, Gerd Holzle, Andre Pugin
  • Patent number: 4132708
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: January 2, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost VON DER Crone
  • Patent number: 4111947
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: March 1, 1977
    Date of Patent: September 5, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost VON DER Crone
  • Patent number: 4083687
    Abstract: Process for dyeing thermoplastics having no reducing action, in which process there are used Mg, Zn, Cd and Ni salts of azo dye sulphonic acids of the formula ##STR1## wherein A represents a phenyl or naphthyl group optionally substituted by halogen atoms, by alkyl or alkoxy groups containing 1 - 4 C atoms, or by trifluoromethyl groups, X represents a hydrogen atom or a carboxy group, and n represents the number 1 or 2.The resulting dyeings are characterized by excellent fastness properties, especially fastness to light and to migration.
    Type: Grant
    Filed: June 18, 1976
    Date of Patent: April 11, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Andre Pugin, Volkhard Wiese
  • Patent number: 4052410
    Abstract: Iminoisoindolinone pigments of the formula ##STR1## wherein X represents halogen atoms,Y represents a halogen atom, an alkoxy, cycloalkoxy, aralkoxy, aryloxy, alkylthio or arylthio group,R represents an aromatic radical containing a cyclic bound -CONH group, andQ represents an O-atom or the group .dbd.N-Rare useful for coloring plastics and lacquers in yellow shades having excellent fastness properties.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: October 4, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Jost von der Crone, Andre Pugin, Rudolf Mory
  • Patent number: 4043999
    Abstract: Iminoisoindolinone dyestuffs of the formula ##STR1## wherein X denotes chlorine or bromine atoms, X.sub.1 denotes a halogen atom or an alkyl, alkoxy, nitrile, trifluoromethyl or alkylsulphonyl group, Y.sub.1 denotes a hydrogen or halogen atom or an alkyl or alkoxy group, X.sub.2 denotes a hydrogen or halogen atom or an alkyl or alkoxy group and Y.sub.2 denotes a hydrogen or halogen atom or an alkyl or alkoxy group, or the radicals X.sub.2 and Y.sub.2 together form a fused benzene ring, and wherein, in the benzene rings A and B, a hydrogen atom is present in at least one o-position relative to the azomethine group were prepared. The dyestuffs may be used for pigmenting high molecular weight organic materials such as cellulose ethers, polyamides and polyesters. The pigments have outstanding fastness to light, migration and weathering.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: August 23, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Ernst Model, Andre Pugin
  • Patent number: 4024132
    Abstract: Azomethine pigments of the formula ##STR1## and metal complexes thereof, wherein A denotes an isocyclic or heterocyclic aromatic radical, R denotes a H atom, an alkyl group containing 1-6 C atoms, or an aryl radical, X.sub.2 and X.sub.4 denote H atoms or halogen atoms, X.sub.1 and X.sub.3 denote H atoms or halogen atoms, alkoxy or alkylmercapto groups containing 1-6 C atoms, cycloalkoxy groups containing 5-6 C atoms, or aralkoxy, aryloxy or arylmercapto groups, it being possible for one of the substituents X.sub.1 -X.sub.4 also to be a nitro group which are useful for pigmenting of high molecular material.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: May 17, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Laurent Vuitel
  • Patent number: 4022770
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: May 10, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost VON DER Crone
  • Patent number: 4016157
    Abstract: Bis-hydrazone metal complexes of the formula ##STR1## wherein A denotes an isocyclic or heterocyclic radical, R denotes a H atom, an alkyl group or an aryl radical, M denotes a divalent transition metal and zinc or cadmium, X.sub.1 and X.sub.2 independently of one another represent alkyl, cycloalkyl, aralkyl or aryl radicals, or conjointly form a fused carbocyclic or heterocyclic aromatic ring, L denotes a ligand having one or more coordinating N or S atoms, and n denotes the number 1 - 5, are useful for coloring plastic and lacquers in fast yellow to red shades.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: April 5, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Laurent Vuitel, Francois L'Eplattenier, Andre Pugin
  • Patent number: 4008225
    Abstract: Process for the manufacture of bis-azomethine metal complex colorants of the formula ##STR1## wherein A denotes an isocyclic or heterocyclic aromatic radical, X denotes an isocyclic or heterocyclic aromatic radical to which the N-atoms are bonded in the o-position or peri-position, or an alkylene radical containing 2-8 C atoms, and M denotes a divalent transition metal ion, a zinc ion or cadmium ion, characterized in that an o-hydroxyaldimine compound of the formula ##STR2## wherein A has the abovementioned meaning and R denotes an alkyl, cycloalkyl or aryl radical, is reacted with a diamine of the formulaNH.sub.2 --X--NH.sub.2wherein X has the abovementioned meaning, in the molar ratio of 2:1, in the presence of a compound which donates a divalent transition metal cation, zinc ion or cadmium ion.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: February 15, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Laurent Vuitel, Andre Pugin
  • Patent number: 4006162
    Abstract: Iminoisoinolinone pigments of the formula ##STR1## wherein R denotes an alkyl group containing 1-4 C atoms, or an aryl group, the W's denote H atoms or, conjointly denote a direct bond, the X's denote halogen atoms, the Y's and Z's denote halogen atoms, alkoxy or alkylmercapto groups containing 1-6 atoms, cycloalkoxy groups containing 5-6 C atoms, or aralkoxy, aryloxy or arylmercapto groups, which are useful for pigmenting high molecular organic material.
    Type: Grant
    Filed: May 6, 1975
    Date of Patent: February 1, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Ernst Model, Jost VON DER Crone, Andre Pugin