Patents by Inventor A. R. Johnson

A. R. Johnson 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).

  • Patent number: 5322060
    Abstract: A fire-resistant face mask is disclosed. The face mask is made of a flexible breathable porous material impregnated with a first solution containing from about 1.8 to about 11.8% by weight ammonium biborate, from about 1.9 to about 6.9% by weight ammonium phosphate, from about 3.7 to about 13.7% by weight ammonium sulfate, from about 0.02 to about 2.0% by weight sodium dodecyl sulfate and from about 92.58 to about 65.6% by weight water; and a second solution containing from about 35% to about 65% by weight lanolin, from about 64.95 to about 30% by weight water and from about 0.05 to about 5.0% by weight lemon fragrance. The mask is breathable and has adsorption capacity for capturing smoke particles, other particulates and for filtering gases. A method of making and using the mask is also disclosed.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: June 21, 1994
    Inventor: A. R. Johnson