Patents by Inventor Cornelia SCHLETH

Cornelia SCHLETH 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).

  • Hindered amine light stabilizers
    Patent number: 11180476
    Abstract: A compound of formula (I) wherein R1 and R2 independently of one another are hydrogen, C1-C22alkyl, —O—, —OH, —CH2CN, C1-C18alkoxy, C2-C18alkoxy substituted by —OH; C5-C12cycloalkoxy, C3-C6alkenyl, C3-C6alkenyloxy, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl; and R3 and R4 independently of one another are C1-C22alkyl or a group of the formula (Ia) wherein R0 has one of the meanings of R1 and R2.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: November 23, 2021
    Assignee: BASF SE
    Inventors: Cornelia Schleth, Liane Schulz, Bruno Rotzinger, Bjoern Ludolph, Manuele Vitali
  • HINDERED AMINE LIGHT STABILIZERS
    Publication number: 20200165226
    Abstract: A compound of formula (I) wherein R1 and R2 independently of one another are hydrogen, C1-C22alkyl, —O—, —OH, —CH2CN, C1-C18alkoxy, C2-C18alkoxy substituted by —OH; C5-C12cycloalkoxy, C3-C6alkenyl, C3-C6alkenyloxy, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl; and R3 and R4 independently of one another are C1-C22alkyl or a group of the formula (Ia) wherein R0 has one of the meanings of R1 and R2.
    Type: Application
    Filed: January 30, 2020
    Publication date: May 28, 2020
    Applicant: BASF SE
    Inventors: Cornelia Schleth, Liane Schulz, Bruno Rotzinger, Bjoern Ludolph, Manuele Vitali
  • HINDERED AMINE LIGHT STABILIZERS
    Publication number: 20180291003
    Abstract: A compound of formula (I) wherein R1 and R2 independently of one another are hydrogen, C1-C22alkyl, —O—, —OH, —CH2CN, C1-C18alkoxy, C2-C18alkoxy substituted by —OH; C5-C12cycloalkoxy, C3-C6alkenyl, C3-C6alkenyloxy, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl; and R3 and R4 independently of one another are C1-C22alkyl or a group of the formula (Ia) wherein R0 has one of the meanings of R1 and R2.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Applicant: BASF SE
    Inventors: Cornelia SCHLETH, Liane SCHULZ, Bruno ROTZINGER, Bjoern LUDOLPH, Manuele VITALI
  • HINDERED AMINE LIGHT STABILIZERS
    Publication number: 20160237063
    Abstract: A compound of the formula (I), wherein R1 and R2 independently of one another are hydrogen, C1-C22alkyl, —O., —OH, —CH2CN, C1-C18alkoxy, C2-C18alkoxy substituted by —OH; C5-C12cycloalkoxy, C3-C6alkenyl, C3-C6alkenyloxy, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl; and R3 and R4 independently of one another are C1-C22alkyl or a group of the formula (1a), wherein R0 has one of the meanings of R1 and R2.
    Type: Application
    Filed: October 13, 2014
    Publication date: August 18, 2016
    Applicant: BASF SE
    Inventors: Cornelia SCHLETH, Liane SCHULZ, Bruno ROTZINGER, Bjoern LUDOLPH, Manuele VITALI