Patents by Inventor Alvin Mattila

Alvin Mattila 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).

  • Nasal filter
    Patent number: 4030491
    Abstract: A filter that is adapted to be placed in the nostril of the nose includes a pair of containers, each having an open side and an opposite perforated side. The containers are formed by a flexible bridge. The open end of each container is closed by a perforated cover. A porous filter material is removably disposed in each container.
    Type: Grant
    Filed: October 31, 1975
    Date of Patent: June 21, 1977
    Inventor: Alvin Mattila