Patents by Inventor Asmund Sigurd Laerdal

Asmund Sigurd Laerdal 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).

  • Respirator mask
    Patent number: 4062357
    Abstract: This invention relates to a disposable respirator mask.The present mask includes a hollow contact rim formed from a plastics blow-moulding which is filled with compressed air.Further, the mask is also foldable for storage purposes.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: December 13, 1977
    Inventor: Asmund Sigurd Laerdal
  • Compression bandage
    Patent number: 4005709
    Abstract: A compression bandage includes a bandage strip with an absorbent layer on one side. A pressure piece of slightly deformable and slightly absorbent molded material is attached to the other side of the strip opposite the absorbent layer. When the bandage is applied and the strip wound around the injured part, the pressure pad exerts pressure through the strip and absorbent layer onto the wound, and cannot slip from the correct position.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: February 1, 1977
    Inventor: Asmund Sigurd Laerdal