1
Melvin A Leitheiser, Harold G Sowman: Non-fused aluminum oxide-based abrasive mineral. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Richard Francis, February 9, 1982: US04314827 (401 worldwide citation)

The invention relates to synthetic, non-fused, aluminum oxide-based abrasive mineral having a microcrystalline structure of randomly oriented crystallites comprising a dominant continuous phase of .alpha.-alumina and a secondary phase, to a method of making the same employing chemical ceramic techno ...


2
Mark G Schwabel: Process for durable sol-gel produced alumina-based ceramics, abrasive grain and abrasive products. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Richard Francis, May 17, 1988: US04744802 (323 worldwide citation)

A sol-gel process of producing durable alpha alumina-based ceramic particularly useful as abrasive grain from alpha alumina monohydrate is improved by the addition of a nucleating agent. Improved abrasive products containing the durable ceramic abrasive grains are also provided.


3
Gene H Shipman: Microporous sheet material, method of making and articles made therewith. Minnesota Mining and Manufacturing Co, Donald M Sell, James A Smith, Richard Francis, September 3, 1985: US04539256 (304 worldwide citation)

A method of making a microporous material is provided which comprises the steps of melt blending crystallizable thermoplastic polymer with a compound which is miscible with the thermoplastic polymer at the melting temperature of the polymer but phase separates on cooling at or below the crystallizat ...


4
Larry D Monroe, William P Wood: Abrasive grits formed of ceramic containing oxides of aluminum and rare earth metal, method of making and products made therewith. Minnesota Mining and Manufacturing Co, Donald M Sell, Walter N Kirn, Richard Francis, November 21, 1989: US04881951 (274 worldwide citation)

Ceramic abrasive grits comprising alpha alumina and at least about 0.5 percent by weight rare earth metal oxide are prepared by combining alumina hydrate and rare earth metal oxide or its precursors to produce a blend, drying the blend to produce a dried solid, crushing the dried solid to produce gr ...


5
Larry D Monroe, William P Wood: Abrasive grits formed of ceramic containing oxides of aluminum and yttrium, method of making and using the same and products made therewith. Minnesota Mining and Manufacturing Company, Donald M Sell, Richard Francis, September 13, 1988: US04770671 (249 worldwide citation)

Ceramic abrasive grits comprising alpha alumina and at least about 0.5 percent by weight yttria are prepared by mixing an aqueous dispersion of alpha alumina monohydrate and yttrium compound, gelling the resultant mixture, drying the gel to produce a dried solid, crushing the dried material to produ ...


6
Vernon M Wald, Robert S Kirk: Shelling-resistant abrasive grain, a method of making the same, and abrasive products. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Richard Francis, April 30, 1991: US05011508 (220 worldwide citation)

Sintered ceramic abrasive grains having increased surface area and a method of making the same are provided. The abrasive grains are incorporated into improved "shelling-resistant" abrasive articles such as coated abrasives, grinding wheels and non-woven abrasives. The ceramic abrasive grains are ma ...


7
Ahmet Celikkaya, Jerald A Scherger, Vernon M Wald: Abrasive grain, method of making same and abrasive products. Gary L Griswold, Walter N Kirn, Richard Francis, May 25, 1993: US05213591 (209 worldwide citation)

An improved abrasive grain comprising the sintered product of a porous non-sintered particle having a coating of inorganic material thereon is provided. A preferred method of making such abrasive grains comprises coating the porous base particles with inorganic particles. The preferred step of coati ...


8
Mieczyslaw H Mazurek: Polysiloxane-grafted copolymer pressure sensitive adhesive composition and sheet materials coated therewith. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Richard Francis, September 15, 1987: US04693935 (206 worldwide citation)

This invention provides pressure sensitive adhesive (PSA) compositions comprising a copolymer having a vinyl polymeric backbone having grafted thereto polysiloxane moieties. The compositions may contain other ingredients such as tackifier and/or plasticizer. An exposed surface of the PSA composition ...


9
Buren R Ree, Louis A Errede, Gary B Jefson, Bruce A Langager: Method of making polytetrafluoroethylene composite sheet. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Richard Francis, May 8, 1979: US04153661 (200 worldwide citation)

A polytetrafluoroethylene composite sheet having a tensile strength of at least one megapascal and comprising particulate material distributed in a matrix of interentangled polytetrafluoroethylene fibrils. The composite sheet is prepared by blending the particulate material with polytetrafluoroethyl ...


10
Lawrence M Clemens, Steven S Kantner, Mieczyslaw Mazurek: Polysiloxane-grafted copolymer release coating sheets and adhesive tapes. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Richard Francis, March 1, 1988: US04728571 (194 worldwide citation)

Release coating compositions comprising polysiloxane-grafted copolymer and blends thereof with other polymeric materials on sheet materials and the back side of adhesive tapes are provided. Controlled and predictable release is achieved through variation of the number and the length, e.g., the molec ...