Patents by Inventor Dieter Singer

Dieter Singer 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).

  • Cleaning compositions (containing fluorochlorocarbon, C.sub.1 to C.sub.4 alkanol and ethyl or methyl proprionate)
    Patent number: 5246618
    Abstract: Improved cleaning compositions are disclosed based on fluorochlorohydrocarbons, alkanols and at least one ester selected from the group consisting of methyl propionate, ethyl propionate and ethyl acetate. The compositions may optionally contain additional additives and are highly suitable for industrial cleaning processes or for vapor degreasing, for example, particularly for removing resin soldering fluxes containing high amounts of activator.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: September 21, 1993
    Assignee: Kali-Chemie AG
    Inventors: Hans Buchwald, Boleslaus Raschkowski, Dieter Singer
  • Cleaning compositions
    Patent number: 5114609
    Abstract: Improved cleaning compositions are disclosed based on fluorochlorohydrocarbons, alkanols and at least one ester selected from the group consisting of methyl propionate, ethyl propionate and ethyl acetate. The compositions may optionally contain additional additives and are highly suitable for industrial cleaning processes or for vapor degreasing, for example, particularly for removing resin soldering fluxes containing high amounts of activator.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: May 19, 1992
    Assignee: Kali-Chemie AG
    Inventors: Hans Buchwald, Boleslaus Raschkowski, Dieter Singer
  • Difluorotetrachloroethane mixtures and their use in removing waxes
    Patent number: 4906304
    Abstract: New mixtures comprising difluorotetrachloroethane and petroleum ethers are described for use, inter alia, as solvents, particularly for waxes.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: March 6, 1990
    Assignee: Kali-Chemie Aktiengesellschaft
    Inventors: Hans Buchwald, Boleslaus Raschkowski, Dieter Singer
  • Solvent mixture containing 2,2,2-trifluoroethanol for use as a cleaning composition
    Patent number: 4770714
    Abstract: Solvent mixtures of 2,2,2,-trifluoroethanol and halogenated hydrocarbons containing 1 to 3 carbon atoms or polyfluorinated aromatic hydrocarbons in a weight ratio of from 1:90 to 99:1, and optional additive alcohols and/or stabilizers, and uses of such mixtures in cleaning processes, vapor degreasing, removal of adsorbed water from the surfaces of solid objects, and as working fluids for a Rankine process or heat pump.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: September 13, 1988
    Assignee: Kali-Chemie Aktiengesellschaft
    Inventors: Hans Buchwald, Boreslaus Raschkowski, Dieter Singer