1
James F Dyrud, Harvey J Berg, Alice C Murray: Resilient shape-retaining fibrous filtration face mask. Minnesota Mining and Manufacturing Company, Donald M Sell, Roger R Tamte, February 28, 1989: US04807619 (136 worldwide citation)

New molded fibrous filtration face masks that are highly resilient and shape-retaining are provided using one or more molded fibrous shaping layers, with a fibrous filtration layer disposed on one side of or between the molded fibrous shaping layers; the molded fibrous shaping layers having a total ...


2
Rodney A Bernardin, Laurel A Hanken, Thomas I Insley, Alice C Murray: Containment device for biological materials. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Stephen W Bauer, December 5, 1989: US04884684 (13 worldwide citation)

A containment device for sealing and protecting containers of biological materials. The device comprises a resilient cushion of aqueous fluid sorbent material having a plurality of openings. Each opening is adapted for receiving a respective container of biological material, and the openings are arr ...