3603315 is referenced by 42 patents and cites 5 patents.

A surgical face mask is provided with an inner layer of soft polymeric foam material which is worn against the face. The mask includes an intermediate layer of filter material and an outer layer of nonwoven material which is relatively impervious to airborne bacteria. The soft foam layer increases the comfort of the mask and allows the mask to conform to the face of the wearer. Further, the foam layer readily absorbs perspiration and saliva and passes these fluids to the middle filter layer, thereby maintaining the layer adjacent the face soft and dry.

Title
Surgical face mask
Application Number
04/867,296
Publication Number
3603315
Application Date
October 17, 1969
Publication Date
September 7, 1971
Inventor
Becker III Fred R
Assignee
American Hospital Supply Corporation
IPC
A61f 09/04
A41D 13/11
A41D 13/05
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