1
Joseph M McGrath: Cellular retroreflective sheeting. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Roger R Tamte, May 24, 1977: US04025159 (345 worldwide citation)

Cellular retroreflective sheeting, which comprises a base layer of retroreflective elements and a transparent cover film supported in spaced relation away from the base layer by a network of narrow intersecting bonds that form hermetically sealed cells within which retroreflective elements are isola ...


2
Edward R Hauser: Web of blended microfibers and crimped bulking fibers. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Roger R Tamte, October 3, 1978: US04118531 (326 worldwide citation)

Mixtures of microfibers and crimped bulking fibers produce a lofty resilient web having properties that are unique for microfiber-based webs. Included in these properties are a combination of high thermal resistance per unit of thickness and moderate weight, as well as other properties which give th ...


3
Timothy L Hoopman: Cube-corner retroreflective articles having wide angularity in multiple viewing planes. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Roger R Tamte, May 13, 1986: US04588258 (310 worldwide citation)

Cube-corner retroreflective articles having improved angularity along multiple viewing planes are provided. The articles comprise at least one matched pair of cube-corner retroreflective elements which are rotated 180.degree. with respect to one another, the three lateral mutually perpendicular face ...


4
Donald A Kubik, Charles I Davis: Melt-blown fibrous electrets. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Roger R Tamte, August 5, 1980: US04215682 (293 worldwide citation)

A persistent electric charge is introduced into melt-blown fibers during the melt-blowing process. When these charged fibers are incorporated into fibrous webs, they provide unique properties, including improved filtering properties.


5
Roger H Appeldorn, John C Nelson, Mark E Gardiner, Timothy L Hoopman: Cube-corner retroreflective articles having tailored divergence profiles. Minnesota Mining & Manufacturing Company, Donald M Sell, Roger R Tamte, October 4, 1988: US04775219 (232 worldwide citation)

Cube-corner retroreflective article having improved divergence profiles. The three lateral reflecting faces of the cube-corner retroreflective elements are formed by three intersecting sets of parallel V-shaped grooves, and at least one of the sets includes, in a repeating pattern, at least two groo ...


6
Dennis L Krueger, Daniel E Meyer: Bicomponent fibers and webs made therefrom. Minnesota Mining and Manufacturing Company, Donald M Sell, Roger R Tamte, January 3, 1989: US04795668 (212 worldwide citation)

Biocomponent fibers, and webs made therefrom, are taught in which one component of the fibers is a crystallizable material. When a web of the fibers is heated in a mold above the temperature at which crystallization occurs, the fibers tend to be set in the position they are held in the mold. A prefe ...


7
Harvey J Berg: Molded fibrous filtration products. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Roger R Tamte, August 20, 1985: US04536440 (171 worldwide citation)

Molded filtration products, such as disposable face masks, are prepared by assembling at least one fibrous shaping layer and one fibrous filtration layer in face-to-face contact and subjecting the assembly to heat and molding pressure. Preferably the assembly comprises two shaping layers, one on eac ...


8
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 ...


9
Leigh E Wood, Allen L Noreen: Pressure-sensitive adhesive tape fastener for releasably attaching an object to a fabric. Minnesota Mining and Manufacturing Company, Donald M Sell, Roger R Tamte, William J Bond, September 25, 1990: US04959265 (126 worldwide citation)

An article can be releasably attached to a fabric or other foraminous substrate by means of a pressure-sensitive adhesive tape fastener, the backing of which has an array of bluntly pointed stems protruding beyond the pressure-sensitive adhesive. The back face of the fastener can have an adhesive la ...


10
Patrick H Carey Jr: Filter medium layered between supporting layers. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Roger R Tamte, March 8, 1977: US04011067 (123 worldwide citation)

A new filter medium, which can remove a high percentage of fine particles from a gas stream while causing a relatively low pressure drop in the gas stream, comprises a base porous web, one or more lightweight non-self-supporting layers of microfibers collected and carried on the base porous web, and ...