Patents by Inventor Dan Youmans

Dan Youmans 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).

  • Class a fire-retardant polyisocyanurate foam boards and process for making
    Patent number: 12202973
    Abstract: A faced polyisocyanurate foam board comprising a halogen-free foam made from a halogen-free foam formulation comprising isocyanate, polyol, and phosphorus-containing flame retardant, and 1.06 to 1.66 kg/m3 (30 to 47 g/ft3) of glass fiber distributed in the foam throughout the thickness of the board; wherein the polyisocyanurate foam board has a trimer content of 11 to 19.5 weight percent, at least 0.1 weight percent phosphorous, and as measured by ASTM E84, a Flame Spread Index of 0 to 25 and a maximum Smoke Development Index of 450 or less.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: January 21, 2025
    Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC
    Inventors: Kali Ananth Suryadevara, Steve Black, Dan Youmans, Kyoung Moo Koh, Mark Rickard