Patents by Inventor Karin Puchtler

Karin Puchtler 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).

  • Antimicrobial method using a hydroxydiphenyl ether compound
    Patent number: 7105577
    Abstract: The present invention relates to the use of hydroxydiphenyl ether compounds as antimicrobially active substances, to certain new compounds of this type and to processes for the preparation of these compounds.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: September 12, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Werner Hölzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder, Surendra Umesh Kulkarni, Arakali Srinivasarao Radhakrishna, Mangesh Shivram Sawant, Asawari Bhikaji Mahtre
  • Hydroxystilbene compounds used as microbicidal active substances
    Patent number: 6814960
    Abstract: The use of hydroxystilbene compounds of formula wherein A is a radical of formula  or a radical of formula  and R1, R2, R3, R4 and R5 are each independently of the others hydrogen, halogen, hydroxy, C1-C16alkyl, C1-C16alkoxy, phenyl; C1-C3phenylalkyl; C6-C10aryloxy, amino, mono-C1-C5alkylamino, di-C1-C5alkylamino, or —NO2; as microbicidal active ingredients is described. The compounds exhibit a pronounced action against pathogenic gram-positive and gram-negative bacteria, and also against yeasts and moulds. They are therefore suitable for the antimicrobial treatment, especially the preservation and disinfection, of surfaces.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: November 9, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Werner Hölzl, Dietmar Ochs, Wolfgang Haap, Karin Puchtler, Marc I Schnyder
  • Hydroxydiphenyl ether compounds
    Publication number: 20040186174
    Abstract: The present invention relates to the use of hydroxydiphenyl ether compounds as antimicrobially active substances, to certain new compounds of this type and to processes for the preparation of these compounds.
    Type: Application
    Filed: April 2, 2004
    Publication date: September 23, 2004
    Inventors: Werner Holzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder, Surendra Umesh Kulkarni, Arakali Srinivasarao Radhakrishna, Mangesh Shivram Sawant, Asawari Bhikaji Mahtre
  • 4-Hydroxyisothiazole compounds
    Patent number: 6759423
    Abstract: The present invention relates to the use of 4-hydroxyisothiazole compounds as antimicrobially active substances, certain new 4-hydroxyisothiazole compounds and a process for their preparation.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: July 6, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Werner Hölzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder, Dinesh Narendra Rele, Sitaram Pal, Asawari Bhikaji Mahtre, Surendra Umesh Kulkarni, Arakali Srinivasarao Radhakrishna
  • Hydroxyphenylvinylthiazoles
    Patent number: 6624182
    Abstract: The use of hydroxyphenylvinylthiazoles of formula wherein R1, R2, R3 and R4 are each independently of the others hydrogen; halogen; hydroxy, C1-C16-alkyl, C1-C16alkoxy, phenyl; phenyl-C1-C3alkyl; C6-C10aryloxy, amino, mono-C1-C5alkyl-amino, di-C1-C5alkylamino or -NO2; wherein at least one of the radicals R1, R2, R3 and R4 is hydroxy; R5 is C1-C5alkyl; C1-C5alkoxy; or unsubstituted or halo-, C1-C5alkyl-, C1-C5alkoxy-, hydroxy- or pyrrolidinyl-substituted phenyl; as microbicidal active ingredients is described. The compounds exhibit a pronounced action against pathogenic gram-positive and gram-negative bacteria, and also against yeasts and moulds. Accordingly, they are suitable for the antimicrobial treatment, especially the preservation and disinfection, of surfaces.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: September 23, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Wolfgang Haap, Werner Hölzl, Dietmar Ochs, Karin Puchtler, Marcel Schnyder
  • Hydroxydiphenyl ether compounds
    Publication number: 20030162836
    Abstract: The present invention relates to the use of hydroxydiphenyl ether compounds as antimicrobially active substances, to certain new compounds of this type and to processes for the preparation of these compounds.
    Type: Application
    Filed: October 25, 2002
    Publication date: August 28, 2003
    Inventors: Werner Holzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder, Surendra Umesh Kulkarni, Arakali Srinivasarao Radhakrishna, Mangesh Shivram Sawant, Asawari Bhikaji Mahtre
  • 4-hydroxyisothiazole compounds
    Publication number: 20020136697
    Abstract: The present invention relates to the use of 4-hydroxyisothiazole compounds as antimicrobially active substances, certain new 4-hydroxyisothiazole compounds and a process for their preparation.
    Type: Application
    Filed: October 3, 2001
    Publication date: September 26, 2002
    Inventors: Werner Holzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder, Dinesh Narendra Rele, Sitaram Pal, Asawari Bhikaji Mahtre, Surendra Umesh Kulkarni, Arakali Srinivasarao Radhakrishna
  • 4-hydroxyisothiazole compounds
    Patent number: 6376522
    Abstract: The present invention relates to the use of 4-hydroxyisothiazole compounds as antimicrobially active substances, certain new 4-hydroxyisothiazole compounds and a process for their preparation.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: April 23, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Werner Hölzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder, Dinesh Narenda Rele, Sitaram Pal, Asawari Bhikaji Mahtre, Surendra Umesh Kulkarni, Arakali Srinivasarao Radhakrishna
  • Microbicidal active ingredients
    Patent number: 6346260
    Abstract: The use of hydroxyphenyl-1,3-propanediones of formula: wherein R1 and R2 are each independently of the other hydrogen, C1-C12alkyl, C1-C12alkoxy, trifluoro-C1-C3alkyl, phenyl or halogen; R3 is a 5- or 6-membered heteroaromatic radical; thiophenyl; or a radical of formula: R4, R5, R6 and R7 are each independently of the other hydrogen, halogen, C1-C12alkyl, C1-C12alkoxy, carboxy or trifluoro-C1-C3alkyl; in the antimicrobial treatment of surfaces, is described. The compounds exhibit a pronounced action against pathogenic gram-positive and gram-negative bacteria, and also against yeasts and molds.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: February 12, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Werner Hölzl, Wolfgang Haap, Dietmar Ochs, Karin Puchtler, Marcel Schnyder