Patents by Inventor Gerhard Tiedtke

Gerhard Tiedtke 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).

  • Low-melting biocidal formulation
    Patent number: 8252819
    Abstract: A low-melting biocidal composition comprising 4,5-dichloro-2-octyl-3(2H)-isothiazolone, 3-iodopropargyl-N-butyl carbamate and at least one C1-C4 alkyl 4-hydroxybenzoate. The composition is stable with regard to agglomeration and crystallization at room temperature.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: August 28, 2012
    Assignee: Rohm and Haas Company
    Inventors: Patrick Thomas Felder, Gerhard Tiedtke
  • Low-melting biocidal formulation
    Publication number: 20090258916
    Abstract: A low-melting biocidal composition comprising 4,5-dichloro-2-octyl-3(2H)-isothiazolone, 3-iodopropargyl-N-butyl carbamate and at least one C1-C4 alkyl 4-hydroxybenzoate. The composition is stable with regard to agglomeration and crystallization at room temperature.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 15, 2009
    Inventors: Patrick Thomas Felder, Gerhard Tiedtke
  • Microbicidal composition
    Patent number: 7560476
    Abstract: A microbicidal composition containing: (a) at least one non-halogenated 2-alkyl-4-isothiazolin-3-one selected from substituted and unsubstituted 2-(C1-C4)alkyl-4-isothiazolin-3-ones; and (b) at least one of 2,2?-dithiobis(N-methylbenzamide) and 2-methylbenzisothiazolone.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: July 14, 2009
    Assignee: Rohm and Haas Company
    Inventors: Beat Heer, Gerhard Tiedtke, Eileen Fleck Warwick
  • Formaldehyde releaser and process for treating aqueous systems
    Publication number: 20050115910
    Abstract: The invention is directed to a stable urea formaldehyde composition that, when combined with one or more biocides including isothiazolones, slowly releases low levels of formaldehyde with low to no odour.
    Type: Application
    Filed: September 9, 2004
    Publication date: June 2, 2005
    Inventors: Patrick Felder, Gerhard Tiedtke
  • Microbicidal composition
    Publication number: 20040198713
    Abstract: A microbicidal composition containing: (a) at least one sulfur-containing s-triazine; (b) at least one pyrithione metal salt; and (c) at least one additional microbicide selected from 2-alkyl-4-isothiazolin-3-ones and halopropynyl carbamates.
    Type: Application
    Filed: March 29, 2004
    Publication date: October 7, 2004
    Inventors: Beat Heer, Gerhard Tiedtke, Bryan Martin Hegarty
  • Microbicidal composition
    Publication number: 20040198714
    Abstract: A microbicidal composition containing: (a) at least one sulfur-containing s-triazine; and (b) at least one pyrithione metal salt.
    Type: Application
    Filed: March 29, 2004
    Publication date: October 7, 2004
    Inventors: Beat Heer, Gerhard Tiedtke, Bryan martin Hegarty
  • Microbicidal composition
    Publication number: 20040198785
    Abstract: A microbicidal composition containing: (a) at least one non-halogenated 2-alkyl-4-isothiazolin-3-one selected from substituted and unsubstituted 2-(C1-C4)alkyl-4-isothiazolin-3-ones; and (b) at least one of 2,2′-dithiobis(N-methylbenzamide) and 2-methylbenzisothiazolone.
    Type: Application
    Filed: March 18, 2004
    Publication date: October 7, 2004
    Inventors: Beat Heer, Gerhard Tiedtke, Eileen Fleck Warwick
  • Microbicidal composition
    Publication number: 20040198729
    Abstract: A microbicidal composition containing: (a) at least one 2-alkyl-4-isothiazolin-3-one; (b) at least one halopropynyl carbamate; and (c) at least one sulfur-containing s-triazine.
    Type: Application
    Filed: March 29, 2004
    Publication date: October 7, 2004
    Inventors: Beat Heer, Gerhard Tiedtke, Bryan Martin Hegarty
  • Aqueous dispersion of low-melting organic solids
    Publication number: 20040101539
    Abstract: An aqueous composition comprising from 5% to 30% of at least one organic compound having a melting point in a range from 30° C. to 60° C. and water solubility at 25° C. of less than 0.5%, at least one inorganic filler, at least one surfactant and no more than 20% organic solvent. The composition is stable with regard to agglomeration and phase separation for at least three months at room temperature.
    Type: Application
    Filed: November 5, 2003
    Publication date: May 27, 2004
    Inventors: Ernst Engler, Gerhard Tiedtke