Patents by Inventor Klaus Langheinrich

Klaus Langheinrich 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).

  • Patent number: 4621138
    Abstract: Triphendioxazine dyestuffs of the formula ##STR1## having the substituent meanings specified in the descriptive part, are highly suitable for dyeing and printing hydroxyl- or amido-containing materials, in particular fibre materials, and produce wash-fast dyeings and prints.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: November 4, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Jager, Klaus Langheinrich, Karl-Josef Herd
  • Patent number: 4331442
    Abstract: Process for dyeing textile materials of cellulose, by means of direct dyestuffs or reactive dyestuffs, by padding with aqueous dyeing liquors which contain cyclic carboxylic acid amides of the formula ##STR1## in which R represents a hydrogen atom, a C.sub.1 -C.sub.4 -alkyl radical or a C.sub.1 -C.sub.4 -hydroxyalkyl radical andA represents an alkylene radical required to complete a five-membered to seven-membered ring system and optionally substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl andn is 0 or 1,and, optionally, glycol compounds of the formula ##STR2## in which R' and R"' independently of one another represent hydrogen, a C.sub.1 -C.sub.5 -alkyl group or an acetyl group,R" represents hydrogen or methyl,n represents a number from 0 to 2 andX represents an oxygen atom or a sulphur atom, and fixing of the dyestuffs.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: May 25, 1982
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Uhlig, Klaus Langheinrich, Udo-Winfried Hendricks
  • Patent number: 4106903
    Abstract: Process for the treatment of cellulose fibres in the form of a doubled pre-drawn sliver, by impregnating with fixing agents of the formula ##STR1## IN WHICH: R.sub.1, R.sub.2 and R.sub.3 represent C.sub.1 -C.sub.4 -alkyl, or hydroxyl-substituted C.sub.2 -C.sub.4 -alkyl orR.sub.1 and R.sub.2 can be jointed to form a ring with N,R.sub.4 represents hydrogen or methyl,X.sup.n(-) represents an anion andn represents 1, 2 or 3,And with adhesives, and subsequently subjecting to a fixing process.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: August 15, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Langheinrich, Otto Berenstecher, Horst Renziehausen