Patents by Inventor Stephan Michaelis
Stephan Michaelis 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: 20220106487Abstract: The novel pigment preparations containing at least one metal azo pigment A) and at least one aliphatic monocarboxylic acid B) having 10 to 22 carbon atoms are suitable for the colouring of plastics and in this connection feature improved heat stability.Type: ApplicationFiled: October 5, 2021Publication date: April 7, 2022Applicant: LANXESS Deutschland GmbHInventors: Stephan Michaelis, Sabine Endert, Frank Linke, Hans-Ulrich Borst
-
Patent number: 10961396Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.Type: GrantFiled: October 9, 2018Date of Patent: March 30, 2021Assignee: LANXESS Deutschland GmbHInventors: Frank Linke, Stephan Michaelis, Hans-Ulrich Borst
-
Publication number: 20200339813Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.Type: ApplicationFiled: July 13, 2020Publication date: October 29, 2020Applicant: LANXESS Deutschland GmbHInventors: Hans-Ulrich BORST, Stephan MICHAELIS, Frank LINKE
-
Patent number: 10808129Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. Methine dyes for example accord to the formula (I) in which R1 is hydrogen, halogen, alkyl, COOH or COOR9, R2 is oxygen or sulfur, R3 is hydrogen, halogen, COOH, COOR10 or CN, R4 is alkyl or phenyl, R5 and R6 are each independently alkyl, R7 and R8 are each independently hydrogen, halogen, alkyl or COOR11, and R9, R10 and R11 are each independently alkyl.Type: GrantFiled: October 9, 2018Date of Patent: October 20, 2020Assignee: LANXESS Deutschland GmbHInventors: Hans-Ulrich Borst, Stephan Michaelis, Frank Linke
-
Patent number: 10487211Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.Type: GrantFiled: October 9, 2018Date of Patent: November 26, 2019Assignee: LANXESS Deutschland GmbHInventors: Hans-Ulrich Borst, Stephan Michaelis, Frank Linke
-
Patent number: 10435565Abstract: Novel red methine dyes, methods for the preparation thereof, and use thereof for dyeing plastics, especially vinyl polymers, provide red colourings with improved colour strengths and improved colour brilliance.Type: GrantFiled: November 21, 2018Date of Patent: October 8, 2019Assignee: LANXESS Deutschland GmbHInventors: Hans-Ulrich Borst, Stephan Michaelis, Frank Linke
-
Publication number: 20190161618Abstract: Novel red methine dyes, methods for the preparation thereof, and use thereof for dyeing plastics, especially vinyl polymers, provide red colourings with improved colour strengths and improved colour brilliance.Type: ApplicationFiled: November 21, 2018Publication date: May 30, 2019Applicant: LANXESS Deutschland GmbHInventors: Hans-Ulrich BORST, Stephan MICHAELIS, Frank LINKE
-
Patent number: 10266697Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow colorings with improved light fastness and improved thermostability.Type: GrantFiled: December 22, 2015Date of Patent: April 23, 2019Assignee: LANXESS Deutschland GmbHInventors: Hans-Ulrich Borst, Frank Linke, Stephan Michaelis
-
Publication number: 20190112487Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.Type: ApplicationFiled: October 9, 2018Publication date: April 18, 2019Applicant: LANXESS Deutschland GmbHInventors: Hans-Ulrich BORST, Stephan MICHAELIS, Frank LINKE
-
Publication number: 20190112485Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.Type: ApplicationFiled: October 9, 2018Publication date: April 18, 2019Applicant: LANXESS Deutschland GmbHInventors: Frank LINKE, Stephan MICHAELIS, Hans-Ulrich BORST
-
Publication number: 20190112486Abstract: The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability.Type: ApplicationFiled: October 9, 2018Publication date: April 18, 2019Applicant: LANXESS Deutschland GmbHInventors: Hans-Ulrich BORST, Stephan MICHAELIS, Frank LINKE
-
Patent number: 9663660Abstract: Yellow metal azo pigments based on adducts of at least two metal azo compounds provide improved dispersion properties and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.Type: GrantFiled: March 22, 2016Date of Patent: May 30, 2017Assignee: LANXESS Deutschland GmbHInventors: Stephan Michaelis, Frank Linke, Heinz-Josef Fuellman, Hans-Ulrich Borst, Sabine Endert, Dirk Pfuetzenreuter
-
Publication number: 20160280923Abstract: Yellow metal azo pigments based on adducts of at least two metal azo compounds provide improved dispersion properties and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.Type: ApplicationFiled: March 22, 2016Publication date: September 29, 2016Inventors: Stephan MICHAELIS, Frank LINKE, Heinz-Josef FUELLMAN, Hans-Ulrich BORST, Sabine ENDERT, Dirk PFUETZENREUTER
-
Patent number: 8932786Abstract: The new metal azo pigments comprising the adduct of a) at least two metal azo compounds of the formula (I) or their tautomeric forms in which the substituents have the definition indicated in the description, and b) at least one compound of the formula (II) in which R6 has the definition indicated in the description, are characterized in that in the X-ray diffractogram with a lattice constant of d=10.3 (±0.2) ? the metal azo pigment has a signal S1 with an intensity I1 and in the lattice constant range from d=16.05 ? to d=11.78 ? has no signal S2 whose intensity I2 in relation to the intensity I1 of signal S1, expressed as ratio I2/I1 of the background-corrected intensities, exceeds a value of 0.02, and are outstandingly suitable for producing pigment preparations and especially for producing color filters.Type: GrantFiled: July 2, 2013Date of Patent: January 13, 2015Assignee: LANXESS Deutschland GmbHInventors: Hans-Ulrich Borst, Frank Linke, Heinz-Josef Fuellmann, Stephan Michaelis, Dirk Pfuetzenreuter, Sabine Endert
-
Publication number: 20140016072Abstract: The new metal azo pigments comprising the adduct of a) at least two metal azo compounds of the formula (I) or their tautomeric forms in which the substituents have the definition indicated in the description, and b) at least one compound of the formula (II) in which R6 has the definition indicated in the description, are characterized in that in the X-ray diffractogram with a lattice constant of d=10.3 (±0.2) ? the metal azo pigment has a signal S1 with an intensity I1 and in the lattice constant range from d=16.05 ? to d=11.78 ? has no signal S2 whose intensity I2 in relation to the intensity I1 of signal S1, expressed as ratio I2/I1 of the background-corrected intensities, exceeds a value of 0.02, and are outstandingly suitable for producing pigment preparations and especially for producing colour filters.Type: ApplicationFiled: July 2, 2013Publication date: January 16, 2014Applicant: LANXESS Deutschland GmbHInventors: Hans-Ulrich BORST, Frank LINKE, Heinz-Josef FUELLMANN, Stephan MICHAELIS, Dirk PFUETZENREUTER, Sabine ENDERT
-
Patent number: 8323357Abstract: The use of fluorine-substituted perylenes in color filters for liquid-crystal displays is described.Type: GrantFiled: April 1, 2010Date of Patent: December 4, 2012Assignee: LANXESS Deutschland GmbHInventors: Ulrich Feldhues, Frank Linke, Stephan Michaelis, Dirk Pfuetzenreuter
-
Publication number: 20100264382Abstract: Use of fluorine-substituted perylenes in colour filters for liquid-crystal displays.Type: ApplicationFiled: April 1, 2010Publication date: October 21, 2010Applicant: LANXESS DEUTSCHLAND GMBHInventors: Ulrich Feldhues, Frank Linke, Stephan Michaelis, Dirk Pfuetzenreuter
-
Publication number: 20100092887Abstract: Use of quinacridones of the formula (I) in which A is an organic radical substituted by one or more fluorine atoms, B is H, F, Cl, Br or an optionally substituted organic radical which may optionally together with A form a ring in colour filters for LCDs.Type: ApplicationFiled: May 19, 2009Publication date: April 15, 2010Applicant: LANXESS DEUTSCHLAND GMBHInventors: ULRICH FELDHUES, FRANK LINKE, STEPHAN MICHAELIS, DIRK PFUETZENREUTER, HORST BERNETH, MEINHARD ROLF
-
Publication number: 20090076199Abstract: Mixtures have been found comprising at least one red dye of the formula (I), (C) or (CI) and at least one orange dye of the formula (L), (LI), (LII), (LIII), (LIV) or (LV) where the substituents have the definition in the description, these mixtures being suitable more particularly for the mass colouring of plastics.Type: ApplicationFiled: September 11, 2008Publication date: March 19, 2009Applicant: LANXESS DEUTSCHLAND GMBHInventors: Stephan Michaelis, Horst Berneth, Eberhard Kuckert
-
Patent number: 6852873Abstract: Process for preparing compounds of the formula (I) where R1, R2 and R3 are independently hydrogen, alkyl or cycloalkyl, characterized in that an aldehyde of the formula (II) is reacted with CH2(CN)2 in the presence of butanol.Type: GrantFiled: August 19, 2002Date of Patent: February 8, 2005Assignee: Bayer AktiengesellschaftInventors: Josef-Walter Stawitz, Stephan Michaelis, Christoph Thiebes