Patents by Inventor Brian E. Duffy

Brian E. Duffy 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).

  • COMPOSITE MEMBRANE FOR BUILDING APPLICATIONS
    Publication number: 20230340787
    Abstract: A roofing composite membrane includes a base layer including a first thermoplastic polyolefin. A weight of the base layer is between 5 and 25 grams per square foot. A coating layer at least partially coats the base layer. The coating layer includes at least one inorganic additive, and a second thermoplastic polyolefin including polypropylene and having a melt flow rate between 0.5 grams per 10 minutes and 12 grams per 10 minutes.
    Type: Application
    Filed: June 27, 2023
    Publication date: October 26, 2023
    Inventors: Li-Ying Yang, Jeffrey Avitabile, Joseph Nigro, Daniel Podewils, Brian A. Davis, Eric R. Anderson, Matthew Gimpert, Yan Zheng, Brian E. Duffy, Yixi Xiao
  • Composite membrane for building applications
    Patent number: 11767673
    Abstract: A roofing composite membrane includes a base layer including a first thermoplastic polyolefin. A weight of the base layer is between 5 and 25 grams per square foot. A coating layer at least partially coats the base layer. The coating layer includes at least one inorganic additive, and a second thermoplastic polyolefin including polypropylene and having a melt flow rate between 0.5 grams per 10 minutes and 12 grams per 10 minutes.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: September 26, 2023
    Assignee: BMIC LLC
    Inventors: Li-Ying Yang, Jeffrey Avitabile, Joseph Nigro, Daniel Podewils, Brian A. Davis, Eric R. Anderson, Matthew Gimpert, Yan Zheng, Brian E. Duffy, Yixi Xiao
  • COMPOSITE MEMBRANE FOR BUILDING APPLICATIONS
    Publication number: 20210095474
    Abstract: A roofing composite membrane includes a base layer including a first thermoplastic polyolefin. A weight of the base layer is between 5 and 25 grams per square foot. A coating layer at least partially coats the base layer. The coating layer includes at least one inorganic additive, and a second thermoplastic polyolefin including polypropylene and having a melt flow rate between 0.5 grams per 10 minutes and 12 grams per 10 minutes.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 1, 2021
    Inventors: Li-Ying Yang, Jeffrey Avitabile, Joseph Nigro, Daniel Podewils, Brian A. Davis, Eric R. Anderson, Matthew Gimpert, Yan Zheng, Brian E. Duffy, Yixi Xiao
  • Welding apparatus and method for joining roofing materials
    Publication number: 20030082870
    Abstract: Pressure roller and heating element combination for a welding apparatus and a method designed to weld a first thermoplastic sheet laid on the deck of a roof structure and secured to the deck by a line of fastening means, and an overlapping second thermoplastic sheet disposed over the line of the fastening means. The pressure roller includes a distal end, a proximal end, and a center portion which defines a groove. The groove is provided with an elastomeric cushion to smoothly ride over the line of fastening means and expel air from between welds produced on both sides of the fastening means when the apparatus is advanced in tandem with a heating element longitudinally along the overlapping portions of the thermoplastic sheets.
    Type: Application
    Filed: December 5, 2002
    Publication date: May 1, 2003
    Applicant: BUILDING MATERIALS CORPORATION OF AMERICA
    Inventors: Krishna Srinivasan, Brian E. Duffy
  • Welding apparatus and method for joining roofing materials
    Patent number: 6536498
    Abstract: Pressure roller and heating element combination for a welding apparatus and a method designed to weld a first thermoplastic sheet laid on the deck of a roof structure and secured to the deck by a line of fastening means, and an overlapping second thermoplastic sheet disposed over the line of the fastening means. The pressure roller includes a distal end, a proximal end, and a center portion which defines a groove. The groove is provided with an elastomeric cushion to smoothly ride over the line of fastening means and expel air from between welds produced on both sides of the fastening means when the apparatus is advanced in tandem with a heating element longitudinally along the overlapping portions of the thermoplastic sheets.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: March 25, 2003
    Assignee: Building Materials Corporation of America
    Inventors: Krishna Srinivasan, Brian E. Duffy