Patents by Inventor Elke Hohn

Elke Hohn 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: 6172035
    Abstract: Thickening agents based on fatty acid monoisopropanolamide which are etherified with ethylene oxide and/or propylene oxide, their use in surface-active formulations and formulations comprising an active amount of these thickening agents.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: January 9, 2001
    Assignee: Goldschmidt Rewo GmbH & Co. KG
    Inventors: Elke Hohn-Stöcker, Christl Möller, Patrice Bayle
  • Patent number: 5371251
    Abstract: The invention relates to fatty acid monoglyceride polyglycol ether sulfosuccinates of the general formula ##STR1## where R represents a straight-chain or branched alkyl or alkylene group having from 7 to 21 carbon atoms;R.sup.1 represents H or CO--R;R.sup.2 may represent, independently of each other, H or the group --CO--CH(SO.sub.3.sup.- M.sup.+)--CH.sub.2 --COO.sup.- M.sup.+ ;A represents the same or different and each is an alkylene group having from 2 to 3 carbon atoms;a,b,c,d may be the same or different, from 0 to 5,e being from 1 to 3,f is a multiplication product of c times e, and a+b+f+d is from 2 to 25; andM.sup.+ represents an alkali-metal ion or an ammonium ion, and to their preparation and use.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: December 6, 1994
    Assignee: Witco GmbH
    Inventors: Ingo Hamann, Elke Hohn, Hans-Jurgen Kohle
  • Patent number: 5254271
    Abstract: Ammonium compounds and the use thereof as fabric softener comprising mixtures of quaternary ammonium compounds with or without ester groups prepared by reacting amines with dimerized fatty acids and subsequent quaternization or protonation with inorganic or organic acids.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: October 19, 1993
    Assignee: Rewo Chemische Werke GmbH
    Inventors: Ingo Hamann, Elke Hohn, Hans-Jurgen Kohle, Winfried Wehner, Joachim Weigand
  • Patent number: 5190699
    Abstract: Disclosed are citric acid fatty alcohol ester polyglycol ether sulfosuccinates of the general formula (1) ##STR1## and personal care products containing them, in which each R is the same or different and is H or -CH.sub.3 ; ##STR2## R.sup.2 is selected from the group consisting of ##STR3## acyl radicals having 8-22 carbon atoms, which radicals are optionally substituted and optionally contain one or more multiple bonds;R.sup.3 is an alkyl or acyl radical having 8-22 carbon atoms, which is optionally substituted and optionally contains multiple bonds;a and b, which are identical or different, are each 0-5, provided that the sum of (a+b) is at least 1;c is 0-15; andX.sup.+ is in each occurrence H.sup.+ or a cation.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: March 2, 1993
    Assignee: REWO Chemische Werke GmbH
    Inventors: Elke Hohn, Hans-Jurgen Kohle, Georg-Friedrich Urban, Joachim Weigand, Christl Moller