Patents by Inventor Michael Pies

Michael Pies 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).

  • Process for the production of phthalimides
    Patent number: 9701632
    Abstract: The invention relates to a process to produce phthalimides by heating diammonium phthalate in the presence of aromatic solvents and to a process to produce phthalimides by heating diammonium phthalate in the presence of aromatic solvents for their recycled use during the ion exchanger production process. The diammonium phthalate is prepared by making use of the phthalic add salts solution resulted from the on exchanger production process.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: July 11, 2017
    Assignee: LANXESS DEUTSCHLAND GMBH
    Inventors: Wolfgang Zarges, Georg Martin, Uwe Boeger, Michael Pies, Guido Issling, Markus Koschorreck
  • PROCESS FOR THE PRODUCTION OF PHTHALIMIDES
    Publication number: 20160304454
    Abstract: The invention relates to a process to produce phthalimides by heating diammonium phthalate in the presence of aromatic solvents and to a process to produce phthalimides by heating diammonium phthalate in the presence of aromatic solvents for their recycled use during the on exchanger production process. The diammonium phthalate is prepared by making use of the phthalic add salts solution resulted from the on exchanger production process.
    Type: Application
    Filed: December 19, 2014
    Publication date: October 20, 2016
    Inventors: Wolfgang ZARGES, Georg MARTIN, Uwe BOEGER, Michael PIES, Guido ISSLING, Markus KOSCHORRECK
  • Method for the hydrodehalogenation of halogenated meta-cresols
    Patent number: 7399890
    Abstract: The present process serves for the hydrodehalogenation of halogenated meta-cresols of the formula (I) in which the R1 to R4 radicals are each as defined in the description, and is characterized in that halogenated meta-cresols of the formula (I) are contacted with a catalyst which has been prepared by applying one or more salts of palladium and/or platinum and optionally copper salts to an aluminum oxide or titanium oxide support material, together with hydrogen, at temperatures between 100 and 250° C.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: July 15, 2008
    Assignee: Lanxess Deutschland GmbH
    Inventors: Michael Pies, Klaus Schönauer, Volker Hassmann, Hermann Uhr
  • Method for the hydrodehalogenation of halogenated meta-cresols
    Publication number: 20070149829
    Abstract: The present process serves for the hydrodehalogenation of halogenated meta-cresols of the formula (I) in which the R1 to R4 radicals are each as defined in the description, and is characterized in that halogenated meta-cresols of the formula (I) are contacted with a catalyst which has been prepared by applying one or more salts of palladium and/or platinum and optionally copper salts to an aluminum oxide or titanium oxide support material, together with hydrogen, at temperatures between 100 and 250° C.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 28, 2007
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Michael Pies, Klaus Schonauer, Volker Hassmann, Hermann Uhr
  • Process for the hydrodehalogenation of halogenated benzenes
    Patent number: 5545779
    Abstract: Halogenated benzenes are hydrodehalogenated in a particularly advantageous manner and at low temperatures by contacting them at temperatures of between 100.degree. and 250.degree. C. together with hydrogen with a catalyst prepared by application of one or more salts of palladium and/or platinum and, if desired, of copper to an alumina or titanium dioxide support.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: August 13, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Pies, Josef Kasbauer, Helmut Fiege
  • Process for the preparation of dialkyl dicarbonates
    Patent number: 5523481
    Abstract: Dialkyl dicarbonates are obtained particularly advantageously from halogenoformic esters by reaction with alkalis in the presence of water-immiscible organic solvents and in the presence of a catalyst, if the catalyst used is benzylalkyldimethylammonium halides. The catalyst is then particularly easy to separate off and to recycle from the reaction mixture.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: June 4, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Pies, Helmut Fiege, Josef Kasbauer, Gebhard Merz
  • Process for preparing m-chloroaromatics
    Patent number: 5466881
    Abstract: In the preparation of m-chloroaromatics by isomerizing corresponding o- and/or p-chloroaromatics in the liquid phase over zeolites, the activity of the zeolites remains at a high level for a particularly long time if the process is carried out in the presence of from 1 to 30 mol % of hydrogen, based on the chloroaromatics used.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: November 14, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Pies, Helmut Fiege, Lothar Puppe, Josef Kasbauer
  • Process for isolating M-dichlorobenzene from mixtures of dichlorobenzene isomers
    Patent number: 5436377
    Abstract: In a particularly advantageous process for isolating m-dichlorobenzene from mixtures of dichlorobenzene isomers by crystallization as eutectic crystals using a processing aid, the processing aid used is a compound of the formula (I) ##STR1## in which R.sup.1 to R.sup.6 are, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, hydroxyl, NH.sub.2 or R--CO-- having R=C.sub.1 -C.sub.4 -alkyl,with 1-bromo-4-chlorobenzene and 1,4-dibromobenzene being excepted.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: July 25, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Pies, Kai Rohlk, Helmut Lahr, Helmut Fiege