Patents by Inventor Wei (Helen) Li

Wei (Helen) Li 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).

  • Patent number: 9427943
    Abstract: A prepreg curing process for preparing composites having superior surface finish and high fiber consolidation is provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 30, 2016
    Assignee: Henkel IP & Holding GmbH
    Inventors: Wei Helen Li, Bryce Floryancic, Michael D. Halbasch
  • Publication number: 20160009891
    Abstract: Curable compositions, such as oxazine-based ones, are useful in applications within the aerospace industry, such as for example as a thermosetting resin composition for use as a matrix resin in processes, such as resin transfer molding, vacuum assisted transfer molding, resin film infusion, prepregging and towpregging, where the composites or laminates so prepared have superior surface finish and high fiber consolidation.
    Type: Application
    Filed: September 21, 2015
    Publication date: January 14, 2016
    Inventors: Alex Chor-Yiu Wong, Xinyu Du, Wei Helen Li, Raymond S. Wong, Noel Fuentes
  • Patent number: 9205633
    Abstract: A prepreg curing process for preparing composites having superior surface finish and high fiber consolidation is provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 8, 2015
    Assignee: Henkel IP & Holding GmbH
    Inventors: Raymond S. Wong, Wei Helen Li, Huabing Zheng
  • Patent number: 9168703
    Abstract: Curable compositions, such as oxazine-based ones, are useful in applications within the aerospace industry, such as for example as a thermosetting resin composition for use as a matrix resin in processes, such as resin transfer molding, vacuum assisted transfer molding, resin film infusion, prepregging and towpregging, where the composites or laminates so prepared have superior surface finish and high fiber consolidation.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: October 27, 2015
    Assignee: Henkel IP & Holding GmbH
    Inventors: Alex Chor-Yiu Wong, Xinyu Du, Wei Helen Li, Raymond S. Wong, Noel Fuentes
  • Publication number: 20150013885
    Abstract: Self supporting prepreg with tack for use in automatic process for laying up prepreg to form three dimensional parts is provided herein.
    Type: Application
    Filed: June 10, 2014
    Publication date: January 15, 2015
    Inventor: Wei Helen Li
  • Publication number: 20140262014
    Abstract: A prepreg curing process for preparing composites having superior surface finish and high fiber consolidation is provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Henkel Corporation
    Inventors: Raymond S. Wong, Wei Helen Li, Huabing Zheng
  • Publication number: 20140273694
    Abstract: A prepreg curing process for preparing composites having superior surface finish and high fiber consolidation is provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Henkel Corporation
    Inventors: Wei Helen Li, Bryce Floryancic, Michael D. Halbasch
  • Patent number: 8288533
    Abstract: This invention relates to syntheses for the preparation of benzoxazine, including benzoxazine monomers and benzoxazime oligomers, from phenolic compounds, aldehyde compounds, and either primary diamine compounds, such as diamino alkylene compounds, e.g., methylene diamine, or diamino arylene compounds, e.g., phenylene diamine, using water, and optionally an organic solvent, as the reaction solvent.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: October 16, 2012
    Assignee: Henkel Corporation
    Inventors: Wei Helen Li, Wenbo Jiang
  • Patent number: 8158724
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin in advanced processes, such as resin transfer molding, vacuum assisted transfer molding and resin film infusion, and their use in such advanced processes form the basis of the present invention.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: April 17, 2012
    Assignee: Henkel Corporation
    Inventors: Stanley L. Lehmann, Wei Helen Li, Raymond S. Wong
  • Patent number: 8029889
    Abstract: The present invention relates to prepregs, towpregs and preforms made from curable compositions of (a) benzoxazines, (b) a combination of adducts a first of which is prepared from hydroxy-containing compounds, isocyanate-containing compounds and phenolic compounds and the second of which is prepared from the first adduct and epoxy-containing compounds, (c) components reactive with the benzoxazine, such as epoxy resins, episulfide resins and oxetane resins, (d) tougheners, such as polyether sulfones, ATBN and core shell materials and (e) a silica component, where the silica has a mean particle diameter on the order of 10?9 meters.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: October 4, 2011
    Assignee: Henkel Corporation
    Inventors: Wei Helen Li, Stanley L. Lehmann, Raymond S. Wong
  • Publication number: 20100261395
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin in advanced processes, such as resin transfer molding, vacuum assisted transfer molding and resin film infusion, and their use in such advanced processes form the basis of the present invention.
    Type: Application
    Filed: March 23, 2010
    Publication date: October 14, 2010
    Applicant: Henkel Corporation
    Inventors: Stanley L. Lehmann, Wei Helen Li, Raymond S. Wong
  • Patent number: 7709579
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin in advanced processes, such as resin transfer molding, vacuum assisted transfer molding and resin film infusion, and their use in such advanced processes form the basis of the present invention.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: May 4, 2010
    Assignee: Henkel Corporation
    Inventors: Stanley L. Lehmann, Wei Helen Li, Raymond S. Wong
  • Patent number: 7666938
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin or an adhesive, and form the basis of the present invention.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: February 23, 2010
    Assignee: Henkel Corporation
    Inventors: Wei Helen Li, Stanley L. Lehmann, Raymond S. Wong
  • Patent number: 7649060
    Abstract: The present invention relates to curable compositions of benzoxazines, a combination of adducts one of which is prepared from hydroxy-containing compounds, isocyanate-containing compounds and phenolic compounds and the second of which is prepared from the first adduct and epoxy-containing compounds and phenolic compounds, epoxy resins and optionally tougheners.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: January 19, 2010
    Assignee: Henkel Corporation
    Inventors: Wei Helen Li, Stanley L. Lehmann, Raymond S. Wong
  • Patent number: 7649037
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin or an adhesive, and form the basis of the present invention.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: January 19, 2010
    Assignee: Henkel Corporation
    Inventors: Wei Helen Li, Stanley L. Lehmann, Raymond S. Wong
  • Publication number: 20090209159
    Abstract: Toughened binder compositions are useful with performs that will be infused with a matrix resin in advanced processes, such as resin transfer molding, vacuum assisted transfer molding and resin film infusion, to form composites and their use in such advanced processes form the basis of the present invention.
    Type: Application
    Filed: May 1, 2009
    Publication date: August 20, 2009
    Applicant: Henkel Corporation
    Inventors: Wei Helen Li, Stanley L. Lehmann
  • Patent number: 7537827
    Abstract: The present invention relates to a prepreg laminate, constructed from a first prepreg; a second prepreg; and a thermoplastic layer therebetween. In the inventive laminate, at least one of the first prepreg or the second prepreg is made from a matrix resin comprising a benzoxazine-containing composition.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: May 26, 2009
    Assignee: Henkel Corporation
    Inventors: Stanley L. Lehmann, Wei Helen Li, Raymond S. Wong
  • Patent number: 7452585
    Abstract: An article of manufacture comprising a sag-resistant nucleus-forming monolithic composite capable of being located within a hollow interior portion of a structural material and being expanded therein. Also, articles of manufacture comprising open-cellular structural material containing within the open-cell or cell thereof, at least one sag-resistant nucleus-forming monolithic composite. The composite is desirably in the shape of a plug that is similar or close to similar to the shape of the hollow interior. In addition, there is described a process that comprises forming a pre-shaped sag-resistant nucleus-forming monolithic composite for use in reinforcing and stiffening a normally open-cellular structural material. Also described is a process for reinforcing or stiffening a normally open-cellular structure, any tubular structure, or any channel structure, by putting at least one sag-resistant nucleus-forming monolithic composite within a hollow interior portion of the structure.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: November 18, 2008
    Assignee: Henkel Corporation
    Inventors: Raymond S. Wong, Stanley L. Lehmann, Wei Helen Li
  • Patent number: 7157509
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin or an adhesive, and form the basis of the present invention.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 2, 2007
    Assignee: Henkel Corporation
    Inventors: Wei Helen Li, Stanley L. Lehmann, Raymond S. Wong
  • Publication number: 20060240261
    Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin or an adhesive, and form the basis of the present invention.
    Type: Application
    Filed: December 3, 2004
    Publication date: October 26, 2006
    Inventors: Wei Helen Li, Stanley Lehmann, Raymond Wong