Patents by Inventor Mark Johnathan Swift

Mark Johnathan Swift 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).

  • Sound absorbing material
    Patent number: 7721846
    Abstract: Sound absorbing board (10) is made from recycled high density foam granulate (12) that has been mixed with a binder (14) and consolidated under pressure. Pores (16) are present in spaces between the granules. Each granule includes small pores (18). Sound is absorbed by thermal diffusion and viscous friction.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: May 25, 2010
    Assignee: Ventures and Consultancy Bradford Limited
    Inventors: Mark Johnathan Swift, David Charles Hothersall, Kirill Vjatcheslavovitch Horoshenkov