Patents by Inventor Boxun Leng

Boxun Leng 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).

  • Polyurethane foam production process, pre-mix, formulation, and product
    Patent number: 10815351
    Abstract: Disclosed are a process of producing a polyurethane foam product, a polyurethane foam product pre-mix, polyurethane foam product formulation, and a polyurethane foam product. The process of producing the polyurethane foam product includes contacting a halohydrin component with a polyurethane foam product pre-mix. The polyurethane foam product pre-mix includes the halohydrin component. The polyurethane foam product formulation includes a polyol component, an isocyanate component, and a halohydrin component. The polyurethane foam product is formed by the pre-mix having the halohydrin component.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: October 27, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Juan Jesus Burdeniuc, Boxun Leng, Torsten Panitzsch, Stephan Wendel, Renee Jo Keller
  • Trimerization catalysts from sterically hindered salts and tertiary amines having isocyanate reactive groups
    Patent number: 10759892
    Abstract: The present invention provides trimerization catalyst compositions having a sterically hindered carboxylate salt used in combination with a tertiary amine catalysts having isocyanate reactive groups and methods to produce a polyisocyanurate/polyurethane foam using such trimerization catalyst compositions.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: September 1, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Boxun Leng, Juan Jesus Burdeniuc, James Douglas Tobias, Robert Hoffman, Xiubing Hu
  • POLYURETHANE FOAM PRODUCTION PROCESS, PRE-MIX, FORMULATION, AND PRODUCT
    Publication number: 20190100638
    Abstract: Disclosed are a process of producing a polyurethane foam product, a polyurethane foam product pre-mix, polyurethane foam product formulation, and a polyurethane foam product. The process of producing the polyurethane foam product includes contacting a halohydrin component with a polyurethane foam product pre-mix. The polyurethane foam product pre-mix includes the halohydrin component. The polyurethane foam product formulation includes a polyol component, an isocyanate component, and a halohydrin component. The polyurethane foam product is formed by the pre-mix having the halohydrin component.
    Type: Application
    Filed: December 3, 2018
    Publication date: April 4, 2019
    Inventors: Juan Jesus Burdeniuc, Boxun Leng, Torsten Panitzsch, Stephan Wendel, Renee Jo Keller
  • Polyurethane foam production process, pre-mix formulation, and product
    Patent number: 10144811
    Abstract: Disclosed are a process of producing a polyurethane foam product, a polyurethane foam product pre-mix, polyurethane foam product formulation, and a polyurethane foam product. The process of producing the polyurethane foam product includes contacting a halohydrin component with a polyurethane foam product pre-mix. The polyurethane foam product pre-mix includes the halohydrin component. The polyurethane foam product formulation includes a polyol component, an isocyanate component, and a halohydrin component. The polyurethane foam product is formed by the pre-mix having the halohydrin component.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: December 4, 2018
    Assignee: Evonik Degussa GmbH
    Inventors: Juan Jesus Burdeniuc, Boxun Leng, Torsten Panitzsch, Stephan Hermann Wendel, Renee Jo Keller
  • TRIMERIZATION CATALYSTS FROM STERICALLY HINDERED SALTS AND TERTIARY AMINES HAVING ISOCYANATE REACTIVE GROUPS
    Publication number: 20180179318
    Abstract: The present invention provides trimerization catalyst compositions having a sterically hindered carboxylate salt used in combination with a tertiary amine catalysts having isocyanate reactive groups and methods to produce a polyisocyanurate/-polyurethane foam using such trimerization catalyst compositions.
    Type: Application
    Filed: June 18, 2015
    Publication date: June 28, 2018
    Inventors: Boxun Leng, Juan Jesus Burdeniuc, James Douglas Tobias, Robert Hoffman, Xiubing Hu
  • POLYURETHANE FOAM PRODUCTION PROCESS, PRE-MIX FORMULATION, AND PRODUCT
    Publication number: 20150148438
    Abstract: Disclosed are a process of producing a polyurethane foam product, a polyurethane foam product pre-mix, polyurethane foam product formulation, and a polyurethane foam product. The process of producing the polyurethane foam product includes contacting a halohydrin component with a polyurethane foam product pre-mix. The polyurethane foam product pre-mix includes the halohydrin component. The polyurethane foam product formulation includes a polyol component, an isocyanate component, and a halohydrin component. The polyurethane foam product is formed by the pre-mix having the halohydrin component.
    Type: Application
    Filed: March 30, 2012
    Publication date: May 28, 2015
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Juan Jesus Burdeniuc, Boxun Leng, Torsten Panitzsch, Stephan Hermann Wendel, Renee Jo Keller