Patents by Inventor Gerhard Crass

Gerhard Crass 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).

  • Publication number: 20040254091
    Abstract: The invention relates to the use of polymers of the formula (1) 1
    Type: Application
    Filed: July 7, 2004
    Publication date: December 16, 2004
    Inventors: Gerhard Crass, Bela Ivan, Gabor Erdodi, Arpad Mathe
  • Patent number: 6794543
    Abstract: The invention provides a process for preparing arylpoly(oxalkyl)benzyl-dimethylammonium derivatives of the formula (1) which comprises reacting compounds of the formulae (2) and (3) where X=Br, Cl, R—SO3 with R=alkyl, alkylaryl R1=H, C1- to C16-alkyl or O—C1- to O—C16-alkyl in the ortho, meta or para position, R2=H, C1- to C4-alkyl or O—C1- to O—C4-alkyl, R3=H, C1- to C16-alkyl or O—C1- to O—C16-alkyl in the ortho, meta or para position, and n=1, 2, 3 or 4, at temperatures of from 60 to 160° C. in a solvent under the autogenous pressure.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: September 21, 2004
    Assignee: Clariant GmbH
    Inventors: Klaus Raab, Gerhard Crass, Rudolf Aigner
  • Patent number: 6746711
    Abstract: Polymers with biocidal action, process for their preparation and their use The invention relates to polymers consisting essentially of structural units of the formula (1) in which R1 is a C1-C4-alkylene group R2, R3 independently of one another, are a C8-C12-alkyl or alkenyl group R4 is methyl or ethyl R5 is hydrogen or methyl and whose molecular weight is between 1000 and 100 000 g/mol, to intermediates for their preparation, to a process for their preparation, and to their use as biocidal coating composition for surfaces and textiles.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: June 8, 2004
    Assignee: Clariant GmbH
    Inventors: Gerhard Crass, Uwe Falk, Béla Iván, Gábor Erdödi, Árpád Máthe
  • Publication number: 20030191264
    Abstract: The invention relates to polymers consisting essentially of structural units of the formula (1) 1
    Type: Application
    Filed: January 28, 2003
    Publication date: October 9, 2003
    Applicant: Clariant GmbH
    Inventors: Gerhard Crass, Uwe Falk, Bela Ivan, Gabor Erdodi, Arpad Mathe
  • Publication number: 20030114533
    Abstract: The invention provides a process for preparing arylpoly(oxalkyl)benzyl-dimethylammonium derivatives of the formula (1) 1
    Type: Application
    Filed: November 14, 2002
    Publication date: June 19, 2003
    Inventors: Klaus Raab, Gerhard Crass, Rudolf Aigner
  • Patent number: 6280486
    Abstract: The present invention relates to fuel/water emulsions essentially comprising 60 to 80% by weight of a fuel, 0.5 to 5% by weight of one or more water-soluble and gasoline-insoluble emulsifiers of the formulae A) R—O—(CH2CH2O)x—H where R is alkyl or alkenyl having in each case 8 to 18 carbon atoms or C9-C14-alkylphenyl and x is a number from 8 to 30, or B) HO—(C2H4O)x—(C3H6O)y—(C2H4O)z—H, in which the proportion of the ethylene oxide units is between 40 and 80% by weight of the molecular mass, or where x is a number between 8 and 30, and 1 to 10% by weight of a water-soluble and gasoline-insoluble poly(alkylene glycol) as stabilizer, also water and, if appropriate, other additives to 100% by weight. The emulsions according to the invention can be used for operating internal combustion engines.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: August 28, 2001
    Assignee: Clariant GmbH
    Inventors: Guido Dessauer, Ute Horn, Helmut Berenbold, Gerhard Crass
  • Patent number: 5703029
    Abstract: The present invention relates to a car dry-bright composition comprising from 1 to 30% by weight of quaternary ammonium compounds of the formula ##STR1## in which R.sup.1 is independently at each occurrence C.sub.6 -C.sub.22 -alkyl or C.sub.6 -C.sub.22 -alkenyl,m and n independently of one another are a number from 1 to 6,R.sup.2 is C.sub.1 -C.sub.4 -alkyl,R.sup.4 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.5 is hydrogen or a group of the formula C(O)R.sup.1,R.sup.3 is C.sub.1 -C.sub.4 -alkyl or a group of the formula ##STR2## in which R.sup.4 and R.sup.5 are as defined above and p is a number from 1 to 6, andA.sup..crclbar. is an anion,and water and, if desired, further auxiliaries corresponding to the balance to 100% by weight.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: December 30, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Crass, Erich Gatter