Patents by Inventor Pepa Dimitrova

Pepa Dimitrova 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: 20180230176
    Abstract: The present invention relates to a method for preparing 2?-O-fucosyllactose, the 2?-O-fucosyllactose obtainable by this method and the use thereof. The method comprises reacting the persilylated, protected fucose derivatives of the formula (I) below, with at least one tri(C1-C6-alkyl)silyl iodide and subsequently reacting the product thus obtained with the compound of the general formula (II), in the presence of a base. In the formulae (I) and (II), the variables are each defined as follows: RSi are the same or different and are a residue of the formula SiRaRbRc; R1 is a C(?O)—R11 residue or an SiR12R13R14 residue, R2 are the same or different and are C1-C8-alkyl or together form a linear C3-C6-alkanediyl, which is unsubstituted or has 1 to 6 methyl groups as substituents; R3 are the same or different and are C1-C8-alkyl or together form a linear C1-C4-alkanediyl, which is unsubstituted or has 1 to 6 methyl groups as substituents.
    Type: Application
    Filed: September 11, 2015
    Publication date: August 16, 2018
    Inventors: MICHAEL PUHL, Klaus DITRICH, Andreas KELLER, Pepa DIMITROVA, Melanie WEINGARTEN, Wolfgang SIEGEL
  • Publication number: 20170283352
    Abstract: A method of preparing a compound of formula (IV) where R1 is alkyl of 1 to 4 carbon atoms, comprises reacting cyclohexene with hydrogen peroxide and an alcohol R1OH in the presence of a catalyst comprising a zeolite of framework structure MWW, wherein the framework of the zeolite comprises silicon, titanium, boron, oxygen and hydrogen.
    Type: Application
    Filed: September 8, 2015
    Publication date: October 5, 2017
    Inventors: Thomas FENLON, Sumana CHATURVEDULA, Dominic RIEDEL, Stefan RÜDENAUER, Ralf PELZER, Pepa DIMITROVA, Florina Corina PATCAS, Manuel DANZ
  • Patent number: 9777246
    Abstract: The current invention is directed towards compounds of the general formula (I), wherein the integers are defined as follows: R1 is —(CH2)nCH(CH3)2, R2 is —(CH2)n+2CH(CH3)2, G1 selected from monosaccharides with 4 to 6 carbon atoms, x in the range of from 1.1 to 4, n is a number in the range of from zero to 3.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 3, 2017
    Assignee: BASF SE
    Inventors: Frederic Bauer, Rainer Eskuchen, Pepa Dimitrova
  • Publication number: 20150368588
    Abstract: The current invention is directed towards compounds of the general formula (I), wherein the integers are defined as follows: R1 is —(CH2)nCH(CH3)2, R2 is —(CH2)n+2CH(CH3)2, G1 selected from monosaccharides with 4 to 6 carbon atoms, x in the range of from 1.1 to 4, n is a number in the range of from zero to 3.
    Type: Application
    Filed: February 26, 2014
    Publication date: December 24, 2015
    Applicant: BASF SE
    Inventors: Frederic BAUER, Rainer ESKUCHEN, Pepa DIMITROVA
  • Patent number: 9061960
    Abstract: Method for working up a mixture comprising at least one alcohol of the general formula (I) R1—CH2—CH2—OH??(I) or at least one branched alcohol of the general formula (II) R1—CH2—CH2—CHR1—CH2—OH??(II), furthermore at least one oil-soluble complex compound of at least one metal of the 8th, 9th or 10th group of the Periodic Table of the Elements, which is selected from complex compounds which have at least one ligand L1 which is at least bidentate, where at least one coordination site of L1 is a nitrogen atom, and at least one acid of the general formula (III) R1—CH2—COOH??(III) in the form of one of its salts, where the groups R1 are selected from C2-C10-alkyl, linear or branched, wherein (a) the mixture is treated with water which can comprise an alkali metal hydroxide, (b) the salt or salts of acid of the general formula (III) are extracted.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: June 23, 2015
    Assignee: BASF SE
    Inventors: Thomas Schaub, Pepa Dimitrova, Rocco Paciello, Frederic Bauer
  • Patent number: 9045715
    Abstract: Described is a process for simultaneously purifying fatty alcohols and obtaining a fraction of free fatty acids, wherein: (a) crude fatty alcohols comprising up to 70% b.w. alkyl esters and/or wax esters are treated with alkaline bases in an amount sufficient to essentially convert said esters into alkaline soaps, (b) said alkaline soaps are separated from said fatty alcohols by extraction to produce a purified fraction of fatty alcohols and an aqueous soap phase, and (c) said soap phase is treated with strong mineral acids in order to release the fatty acids from the soaps.
    Type: Grant
    Filed: May 12, 2012
    Date of Patent: June 2, 2015
    Assignee: Cognis IP Management GmbH
    Inventors: Horst Josten, Pepa Dimitrova, Truc Tran Anh
  • Publication number: 20130324770
    Abstract: Method for working up a mixture comprising at least one alcohol of the general formula (I) R1—CH2—CH2—OH??(I) or at least one branched alcohol of the general formula (II) R1—CH2—CHR1—CH2—OH??(II), furthermore at least one oil-soluble complex compound of at least one metal of the 8th, 9th or 10th group of the Periodic Table of the Elements, which is selected from complex compounds which have at least one ligand L1 which is at least bidentate, where at least one coordination site of L1 is a nitrogen atom, and at least one acid of the general formula (III) R1—CH2—COOH??(III) in the form of one of its salts, where the groups R1 are selected from C2-C10-alkyl, linear or branched, wherein (a) the mixture is treated with water which can comprise an alkali metal hydroxide, (b) the salt or salts of acid of the general formula (III) are extracted.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Applicant: BASF SE
    Inventors: Thomas SCHAUB, Pepa Dimitrova, Rocco Paciello, Frederic Bauer
  • Publication number: 20130281696
    Abstract: Process for preparing branched alcohols of the general formula (I) where the groups R1 are different or identical and selected from C2-C3-alkyl, linear or branched, using at least one alcohol of the formula (II) R1—CH2—CH2—OH??(II) in homogeneous phase in the presence of at least one base, wherein at least one Ru(II)-containing complex compound is used in which the Ru(II) has at least one ligand L1 which is at least bidentate, where at least one coordination site of L1 is a nitrogen atom.
    Type: Application
    Filed: April 17, 2013
    Publication date: October 24, 2013
    Applicant: BASF SE
    Inventors: Thomas SCHAUB, Pepa Dimitrova, Rocco Paciello, Frederic Bauer
  • Publication number: 20120289724
    Abstract: Described is a process for simultaneously purifying fatty alcohols and obtaining a fraction of free fatty acids, wherein: (a) crude fatty alcohols comprising up to 70% b.w. alkyl esters and/or wax esters are treated with alkaline bases in an amount sufficient to essentially convert said esters into alkaline soaps, (b) said alkaline soaps are separated from said fatty alcohols by extraction to produce a purified fraction of fatty alcohols and an aqueous soap phase, and (c) said soap phase is treated with strong mineral acids in order to release the fatty acids from the soaps.
    Type: Application
    Filed: May 12, 2012
    Publication date: November 15, 2012
    Applicant: Cognis IP Management GmbH
    Inventors: Horst Josten, Pepa Dimitrova, Truc Tran Anh