1
Seyed A Angadjivand, Marvin E Jones, Daniel E Meyer: Method of charging electret filter media. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, March 5, 1996: US05496507 (180 worldwide citation)

A method of charging a nonwoven web of thermoplastic microfibers to provide electret filter media is provided. The method includes impinging on a nonwoven web of thermoplastic nonconductive microfibers capable of having a high quantity of trapped charge jets of water or a stream of water droplets at ...


2
Patrick H Carey Jr: Nonwoven thermal insulating stretch fabric and method for producing same. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Carole Truesdale, November 5, 1985: US04551378 (139 worldwide citation)

A nonwoven stretch fabric is provided. The fabric is produced from a web of bicomponent fibers bonded together by fusion of fibers at points of contact and thermally crimped in situ in the web. The fabric has good uniformity, good thermal insulating properties, and is produced by subjecting a fibrou ...


3
Gerald M Brostrom, David C Byram: Molded head harness. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, January 9, 1996: US05481763 (125 worldwide citation)

An insert-molded head harness for use in securing a respirator mask to the face of a wearer, wherein the head harness comprises a web having a central portion and a peripheral portion extending at least partially around the central portion, and a plurality of elastomeric fastening straps having firs ...


4
Davis H Crater, Richard D Howells, Richard M Stern, John A Temperante: Fluorochemical oxazolidinones. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, June 18, 1991: US05025052 (111 worldwide citation)

Fluorochemical oxazolidinones compositions are provided. They ar normally solid, water-insoluble, fluoroaliphatic radical-containing 2-oxazolidinone compounds which have one or more 2-oxazolidinone moieties, at least one of which has a monovalent fluoroaliphatic radical bonded to the 5-position carb ...


5
James S Mrozinski, Harold J Seppala: Oil, water and sweat repellent microporous membrane materials. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, November 9, 1993: US05260360 (104 worldwide citation)

The invention discloses an oleophobic, hydrophobic, water repellent, moisture vapor and air permeable, heat sealable, microporous membrane material suitable for garment applications. The membrane material comprises a polyolefin polymer, a processing compound which is miscible with the polymer at its ...


6
Gerald M Brostrom, David C Byram: Molded head harness. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, March 7, 1995: US05394568 (102 worldwide citation)

An insert-molded head harness for use in securing a respirator mask to the face of a wearer, wherein the head harness comprises a web having a central portion and a peripheral portion extending at least partially around the central portion, and a plurality of elastomeric fastening straps having firs ...


7
James S Mrozinski: Microporous polyolefin shaped articles with patterned surface areas of different porosity. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, June 9, 1992: US05120594 (98 worldwide citation)

A microporous polyolefin shaped article is provided. The article comprises a polyolefin substrate of substantially uniform thickness having a patterned surface, the patterned surface providing substantially skinless areas having high microporosity and skinned areas of reduced microporosity. A method ...


8
Marvin E Jones, Alan D Rousseau: Oily mist resistant electret filter media and method for filtering. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Carole Truesdale, May 2, 1995: US05411576 (94 worldwide citation)

An oily mist resistant electret filter media is provided. The filter media includes polypropylene electret fibers and a melt processable fluorochemical additive. The additive has a melt temperature of at least 25.degree. C. and a molecular weight of about 500 to 2500. Also provided is a method for f ...


9
Alan D Rousseau, Marvin E Jones, Seyed A Angadjivand: Fibrous webs having enhanced electret properties. Minnesota Mining and Manufacturing Company, Carole Truesdale, Karl G Hanson, June 1, 1999: US05908598 (88 worldwide citation)

The present invention relates to a method of making a fibrous electret material which includes the steps of (1) forming a fibrous web of nonconductive thermoplastic fibers from a blend of nonconductive thermoplastic resin and an additive which is (a) a thermally stable organic compound or oligomer c ...


10
Jerome W McAllister, Kevin E Kinzer, James S Mrozinski, Eric J Johnson, James F Dyrud: Particle-filled microporous materials. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Carole Truesdale, September 18, 1990: US04957943 (82 worldwide citation)

A microporous particulate-filled thermoplastic polymeric article is provided. The article can be in the form of a film, a fiber, or a tube. The article has a thermoplastic polymeric structure having a plurality of interconnected passageways to provide a network of communicating pores. The microporou ...