Patents by Inventor Siegfried Gahler

Siegfried Gahler 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).

  • Coating composition, particularly for glass surfaces, and methods for the production and use thereof
    Patent number: 7651561
    Abstract: Coating compositions, in particular for laser-supported treatment (in particular inscription) of glass surfaces are described, wherein the coating compositions contain at least one silver compound which is soluble in an aqueous and/or organic solvent and contains at least one binder. Methods for producing such coating compositions and methods for coating and treating glass surfaces are also described.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: January 26, 2010
    Assignee: boraglas GmbH
    Inventors: Siegfried Gahler, Hans-Juergen Mueller, Reinhard Borek, Frank Meier, Thomas Rainer, Jochen Schneider, Stefanie Heimrich
  • Coating composition, particularly for glass surfaces, and methods for the production and use thereof
    Publication number: 20050239004
    Abstract: Coating compositions, in particular for laser-supported treatment (in particular inscription) of glass surfaces are described, wherein the coating compositions contain at least one silver compound which is soluble in an aqueous and/or organic solvent and contains at least one binder. Methods for producing such coating compositions and methods for coating and treating glass surfaces are also described.
    Type: Application
    Filed: October 24, 2003
    Publication date: October 27, 2005
    Inventors: Siegfried Gahler, Hans-Juergen Mueller, Reinhard Borek, Frank Meier, Thomas Rainer, Jochen Schneider, Stefanie Heimrich
  • Process for the stabilization and antifogging of photographic silver halide emulsions
    Patent number: 4131470
    Abstract: A process for the stabilization of and the prevention or substantial reduction of fogging in the use of photographic silver halide emulsions, characterized in that compounds selected from the group consisting of those represented by the general formulas I, II, and III: ##STR1## are added to the emulsion, before or during chemical sensitization and before coating of the emulsions onto a support therefor, wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as herein described.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: December 26, 1978
    Assignee: VEB Filmfabrik Wolfen
    Inventors: Gunther Fischer, Beate Wenzel, Steffen Scheithauer, Udo Franz, Karl-Wilhelm Junge, Christof Schroter, Siegfried Gahler, Johannes Morgenstern
  • Process of sensitizing silver halide emulsion with a dithioester
    Patent number: 4030928
    Abstract: Method for increasing the sensitivity of a photographic silver halide-gelatin emulsion comprising at the beginning of the chemical ripening adding to the emulsion of a dithioester of the formula: ##STR1## in which R is alkyl, .alpha.-hydroxyalkyl, .alpha.-hydroxyaralkyl, condensed aryl, or o- or p-substituted phenyl or .alpha.-naphthyl, the o- or p- located substituent being a F, OH, dialkylamino, sulfo, phenyl, phenylazo or anilidocarbonyl group and R.sub.1 is alkyl or aralkyl.
    Type: Grant
    Filed: November 18, 1975
    Date of Patent: June 21, 1977
    Assignee: VEB Filmfabrik Wolfen-Fotochemisches Kombinat
    Inventors: Siegfried Gahler, Karl-Wilhelm Junge, Gunther Fischer, Steffen Scheithauer, Horst Viola