1
Joseph P Kronzer, Roger J Stumo, James F Dyrud, Harvey J Berg: Methods of forming fibrous filtration face masks. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Karl G Hanson, May 3, 1994: US05307796 (77 worldwide citation)

A method of forming a cup-shaped, non-woven fibrous shaping layer for a filtering face mask. The method includes the steps: (a) heating a non-woven fibrous web that contains at least 40 weight percent thermally bonding fibers, where at least 10 weight percent of the fibrous material is bicomponent f ...


2
Patrick H Carey Jr, Joseph P Kronzer: Nonwoven thermal insulating batts. Minnesota Mining and Manufacturing Company, D M Sell, W N Kirn, C Truesdale, June 6, 1989: US04837067 (52 worldwide citation)

A nonwoven thermal insulating batt is provided. The batt comprises structural staple fibers and bonding staple fibers, the fibers being entangled and substantially parallel to the faces of the batt at the face portions and substantially perpendicular to the faces of the batt in the central portion o ...


3
Robert W H Chang, Joseph P Kronzer: Cleansing pad. Minnesota Mining and Manufacturing Company, D M Sell, C Truesdale, September 6, 1988: US04769022 (39 worldwide citation)

A nonwoven cleansing pad is provided. The pad comprises high-sorbency, liquid sorbent fibers capable of forming a hydrogelatinous outer surface by sorption of liquid and thermally bondable binder fibers. The cleansing pad is substantially free of supplemental lubricant and is integrally self-lubrica ...


4
Joseph P Kronzer, James F Dyrud: Fibrous filtration face mask. Minnesota Mining and Manufacturing Company, Karl G Hanson, November 7, 2006: US07131442 (31 worldwide citation)

A face mask for filtering contaminants from the air. The face mask includes a harness for securing the mask over the nose and mouth of the wearer and a nonwoven fibrous layer attached to the harness. The nonwoven fibrous layer contains at least 40 weight percent thermally bonding fibers, where at le ...


5
Joseph P Kronzer, Patrick H Carey: Nonwoven thermal insulating batts. Minnesota Mining &Amp Mfg Co, FAN WEIMIN, December 28, 1988: CN88103385

A nonwoven thermal insulating batt is provided. The batt comprises structural staple fibers and bonding staple fibers, the fibers being entangled and substantially parallel to the faces of the batt at the face portions and substantially perpendicular to the faces of the batt in the central portion o ...