1
Zane N Frund: Respirator filter system. Mine Safety Appliances Company, James G Uber, Henry E Bartony Jr, February 3, 1998: US05714126 (119 worldwide citation)

The present invention provides a respirator filter system suitable for filtering toxic agents, including organic vapors, acid gases, formaldehyde, ammonia, and methylamine as well as pesticides, CS and CN tear gases, dusts, mists, fumes and radionuclides from environmental air to be respired by a us ...


2
Paul X Freund, Zane N Frund Jr: Chemical resistant laminated garment material. Douglas K McClaine, March 28, 1989: US04816330 (19 worldwide citation)

A chemical resistant garment material, that is a laminate formed from layers of skived Teflon that have been adhered to a cloth substrate, for use in protective clothing to guard against exposure to toxic agents.


3
Zane N Frund: Protective hoods and neck seals for use therein. Mine Safety Appliances Company, James G Uber, Henry E Bartony Jr, May 17, 2005: US06892725 (9 worldwide citation)

A neck seal for use in a protective hood includes an inner section including a passage for donning. The inner section is fabricated from an elastomeric material to form a seal around a neck of a user. The neck seal also includes an outer section adhered to the inner section. The outer section is fab ...


4
Zane N Frund: Protective hoods and neck seals for use therein. James G Uber Esq, Mine Safety Appliances Company, October 30, 2003: US20030200966-A1

A neck seal for use in a protective hood includes an inner section including a passage for donning. The inner section is fabricated from an elastomeric material to form a seal around a neck of a user. The neck seal also includes an outer section adhered to the inner section. The outer section is fab ...