Patents by Inventor Richard Edward Hamann

Richard Edward Hamann 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).

  • Polyolefin-based hot melt adhesives with improved processing and bonding performance
    Patent number: 10759978
    Abstract: A hot melt adhesive made from a blend of a polypropylene-based polymer, a polyolefin elastomer, and an amorphous polyolefin. These adhesives exhibit excellent molten and pre-set flow allowing them to wet out substrates yet develop properties needed to form and maintain strong bonds making them useful for hygiene, construction, and packaging applications.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 1, 2020
    Assignee: BOSTIK, INC.
    Inventors: Steven Daniel Gray, David Frederic Freund, Richard Edward Hamann, Miao Hu, Fabrice Nicolas-Henri Flores
  • METHOD OF REDUCING ADHESIVE BUILD-UP ON ROLLER SURFACES
    Publication number: 20190202188
    Abstract: Adhesive bleed-through of substrates and build-up of adhesive on process equipment can be reduced or even fully eliminated by increasing the running temperature of circumferential rolls (e.g., nip rollers or idlers) used to compress and adhesively bond the substrates of a laminate structure together, as opposed to the usual cooling of the nip rollers. This method is particularly beneficial when using polyolefin-based hot melt adhesives to form laminates with permeable substrates, such as low basis weight nonwovens, for use in disposable absorbent articles. The method can be used to make a range of laminated structures, such as bi-laminates and tri-laminates.
    Type: Application
    Filed: February 8, 2017
    Publication date: July 4, 2019
    Inventors: Steven Daniel GRAY, Ronald Frank GRAF, David Frederic FREUND, Miao HU, Russell P. STUCZYNSKI, Richard Edward HAMANN, Jeffery Thomas OLSON
  • Polyolefin-Based Hot Melt Adhesives With Improved Processing And Bonding Performance
    Publication number: 20160102230
    Abstract: A hot melt adhesive made from a blend of a polypropylene-based polymer, a polyolefin elastomer, and an amorphous polyolefin. These adhesives exhibit excellent molten and pre-set flow allowing them to wet out substrates yet develop properties needed to form and maintain strong bonds making them useful for hygiene, construction, and packaging applications.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 14, 2016
    Applicant: BOSTIK, INC.
    Inventors: Steven Daniel Gray, David Frederic Freund, Richard Edward Hamann, Miao Hu, Fabrice Nicolas-Henri Flores