Patents by Inventor Stanley Leroy Lehmann

Stanley Leroy Lehmann 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).

  • CURABLE COMPOSITIONS CONTAINING ISOCYANATE-BASED TOUGHENERS
    Publication number: 20230159693
    Abstract: The present invention relates to curable compositions comprising (a) N-arylated benzoxazines, and (b) a prepolymer produced from a diisocyanate having two isocyanate groups with different reactivity. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpreg.
    Type: Application
    Filed: January 3, 2023
    Publication date: May 25, 2023
    Applicant: KANEKA AEROSPACE LLC
    Inventors: Stefan KREILING, Rainer SCHOENFELD, Andreas TADEN, Michael KUX, Harald KUSTER, Ursula TENHAEF, Stanley Leroy LEHMANN
  • CURABLE COMPOSITIONS CONTAINING ISOCYANATE-BASED TOUGHENERS
    Publication number: 20210102035
    Abstract: The present invention relates to curable compositions comprising (a) N-arylated benzoxazines, and (b) a prepolymer produced from a diisocyanate having two isocyanate groups with different reactivity. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpreg.
    Type: Application
    Filed: October 20, 2020
    Publication date: April 8, 2021
    Applicant: KANEKA AEROSPACE LLC
    Inventors: Stefan Kreiling, Rainer Schoenfeld, Andreas Taden, Michael Kux, Herald Kuster, Ursula Tenhaef, Stanley Leroy Lehmann
  • Curable benzoxazine-based compositions, their preparation and cured products thereof
    Patent number: 8759443
    Abstract: The invention relates to a curable composition comprising: at least one benzoxazine and at least one toughening additive which can be bound to the at least one benzoxazine in the curing process, characterized in that the toughening additive is distributed in the cured composition in form of discrete domains, and that at least 50% of the discrete domains related to the total amount of discrete domains have a maximum length in any direction of space in the range of 10 nm to 500 nm as determined by transmission electron microscopy (TEM).
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: June 24, 2014
    Assignees: Henkel AG & Co. KGaA, Henkel IP & Holding GmbH
    Inventors: Andreas Taden, Stefan Kreilling, Rainer Schoenfeld, Stanley Leroy Lehmann
  • Curable benzoxazine macromonomers, their preparation and cured products
    Patent number: 8168743
    Abstract: The invention relates to a curable benzoxazine macromonomer containing at least 3 benzoxazine rings and at least one aliphatic, heteroaliphatic, araliphatic, hetereoaraliphatic, aromatic or heteroaromatic fragment, the fragment comprising a shortest atom chain containing at least 40 consecutive atoms between two benzoxazine nitrogen atoms or between two benzoxazine oxygen atoms, and said atom chain must not include any oxazine ring atoms (“soft fragment”). The invention further relates to cured products made thereof and a method or producing the same.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: May 1, 2012
    Assignees: Henkel AG & Co. KGaA, Henkel Corporation
    Inventors: Andreas Taden, Ursula Tenhaef, Stefan Kreiling, Rainer Schoenfeld, Stanley Leroy Lehmann
  • HIGH PERFORMANCE ADHESIVES AND METHODS FOR THEIR USE
    Publication number: 20110056779
    Abstract: The present invention is directed to benzoxazine-containing adhesives having high adhesive strength at high temperature. These materials are especially useful in automotive applications, in particular, as adhesives for brake components. Methods of their use are also described.
    Type: Application
    Filed: November 12, 2010
    Publication date: March 10, 2011
    Applicants: Henkel Corporation, Henkel AG & Co. KGaA
    Inventors: John D. McGee, Stefan Kreiling, Stanley Leroy Lehmann, Andreas Taden