Patents by Inventor Jorg Lesmann

Jorg Lesmann 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).

  • Use of 1,3,5-triazine-2,4,6-tris-alkylaminocarboxylic acid derivatives as biocidal agents in aqueous systems and cooling lubricants comprising these
    Patent number: 5776934
    Abstract: 1,3,5-Triazine-2,4,6-tris-alkylaminocarboxylic acid derivatives of the general formula (I): 1,3,5-triazine-2,4,6-tris?NH--(CH.sub.2).sub.n --CO--O--R.sup.1 ! are employed as biocidal or biostatic agents in aqueous systems, in particular in cooling lubricants. Fungicides, for example pyrithione or derivatives thereof and/or N-alkyl-diazenium dioxide salts, can be added to the aqueous systems. 0.05 to 0.40% by weight of the 1,3,5-triazine-2,4,6-alkylaminocarboxylic acid derivatives and 0.0001 to 0.2% by weight of fungicides are sufficient to maintain the biocidal or biostatic actions.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: July 7, 1998
    Assignee: CG-Chemie GmbH
    Inventors: Jorg Lesmann, Hermann Georg Schafer
  • 1,3,5-triazine-2,4,6-tris-alkylaminocarboxylic acid amino esters, biocidal agents containing such esters, and methods of preparing them
    Patent number: 5534624
    Abstract: 1,3,5-Triazine-2,4,6-tris-alkylaminocarboxylic acid amino esters of the general formula (I): 1,3,5-triazine-2,4,6-tris[NH--(CH.sub.2).sub.n --CO--O--R.sup.1 ], in which R.sup.1 denotes the radical of an alkanolamine, can be employed as biocidal or biostatic compounds in aqueous systems, in particular in cooling lubricants.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: July 9, 1996
    Assignee: CG-Chemie GmbH
    Inventors: Jorg Lesmann, Hermann G. Schafer