Patents Represented by Attorney, Agent or Law Firm Daniel R. Pastirik
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Patent number: 6110015Abstract: A method for polishing a glass workpiece is provided that includes contacting the glass workpiece having an initial Ra with an abrasive article comprising a three-dimensional abrasive coating bonded to a backing, applying a liquid at an interface between the glass workpiece and the abrasive article; moving the glass workpiece and the abrasive article relative to one another; and reducing the initial Ra to a final Ra. The abrasive articles are capable of rapid removal of glass stock from a glass test blank and reducing the surface finish using an RPP test procedure.Type: GrantFiled: December 17, 1998Date of Patent: August 29, 2000Assignee: 3M Innovative Properties CompanyInventors: Todd J. Christianson, Robert G. Visser, David D. Nguyen
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Patent number: 6106382Abstract: The present invention encompasses an abrasive dressing product suitable for use under wet conditions. The abrasive product includes a rigid backing that includes an electrically conductive layer and a plurality of metallic elements arranged on the backing in a plurality of rows. Each metallic element has an attachment end in contact with the electrically conductive layer and a distal end that contains abrasive particles. Adjacent metallic elements in the same row are spaced apart by a gap which is less than the width of any adjacent metallic element in any adjacent row and individual metallic elements in one row are positioned to overlap the gap between adjacent metallic elements in any adjacent row.Type: GrantFiled: June 26, 1997Date of Patent: August 22, 2000Assignee: 3M Innovative Properties CompanyInventor: Masayuki Sakaguchi
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Patent number: 6080482Abstract: Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments, such as sheath-core and side-by-side filaments, comprising a first plastic component and a second lower-melting component defining all or at least part of the material-air boundary of the filaments. The filaments can be made by melt-extruding thermoplastics to form hot filaments, cooling and solidifying the hot filaments, and recovering the solidified filaments without any substantial tension being placed thereon. Aggregations of the filaments can be made in the form of floor matting and abrasive articles.Type: GrantFiled: May 5, 1997Date of Patent: June 27, 2000Assignee: Minnesota Mining and Manufacturing CompanyInventors: Philip G. Martin, Gary L. Olson, Dennis G. Welygan
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Patent number: 6017831Abstract: Abrasive articles and a method for the manufacture of such articles are described. The articles comprise a lofty nonwoven web of fibers, the fibers defining a first major web surface, a second major web surface and a middle web portion extending between the first and second major web surfaces; and a plurality of abrasive particles adhered to the surfaces of the fibers of at least one of the first or second major web surfaces and distributed along the lengths of the fibers in a substantially uniform manner, the particles comprising a distribution of particle sizes having a median particle diameter of about 60 microns or less.Type: GrantFiled: November 12, 1997Date of Patent: January 25, 2000Assignee: 3M Innovative Properties CompanyInventors: Kris A. Beardsley, Jonathan M. Lise, Brent D. Niccum
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Patent number: 6013587Abstract: Nonwoven articles having high durability and absorbent characteristics, and their methods of manufacture, are presented. One preferred article is characterized by(a) a nonwoven web comprised of organic fibers comprised of polymers having a plurality of pendant hydroxyl groups; and(b) a binder comprising an at least partially crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, the resin crosslinked by a crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates and amorphous metal oxides, the polymeric resin derived from monomers selected from the group consisting of monomers within the general formula ##STR1## wherein: X is selected from the group consisting of Si(OR.sup.4 OR.sup.5 OR.sup.6) and O(CO)R.sup.7 ; andR.sup.1 -R.sup.7 inclusive are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms, inclusive, and combinations thereof.Type: GrantFiled: May 29, 1996Date of Patent: January 11, 2000Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jack G. Truong, Willa M. Studiner, Bradford B. Wright, Michael M. Rock, Jr.
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Patent number: 6007590Abstract: A method for manufacturing a foraminous abrasive article whereby abrasive particles are concentrated in an external surface region of a foraminous substrate. The method includes the steps of: providing a foamable, hardenable, liquid resin composition and a foraminous substrate having an external surface; foaming the resin composition effective to disperse a plurality of gas bubbles throughout the resin composition; applying the foamed resin composition to the external surface of the substrate to form a foam coating layer having an upper surface; applying a plurality of abrasive particles to the upper surface of the foam coating layer; heating the foamed coating layer effective to eliminate the gas bubbles from the foamed coating layer; and hardening the resin composition to attach the abrasive particles to the substrate. The invention also concerns the foraminous abrasive article products of this method.Type: GrantFiled: November 12, 1997Date of Patent: December 28, 1999Assignee: 3M Innovative Properties CompanyInventor: Rufus C. Sanders, Jr.
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Patent number: 6007407Abstract: An abrasive construction for modifying a surface of a workpiece, such as a semiconductor wafer. The abrasive construction comprises: a three-dimensional, textured, fixed abrasive element; at least one resilient element generally coextensive with the fixed abrasive element; and at least one rigid element generally coextensive with and interposed between the resilient element and the fixed abrasive element, wherein the rigid element has a Young's Modulus greater than that of the resilient element.Type: GrantFiled: August 20, 1997Date of Patent: December 28, 1999Assignees: Minnesota Mining and Manufacturing Company, Exclusive Design Company, Inc.Inventors: Denise R. Rutherford, Douglas P. Goetz, Cristina U. Thomas, Richard J. Webb, Wesley J. Bruxvoort, James D. Buhler, William J. Hollywood
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Patent number: 5996167Abstract: Surface treating articles and methods for the manufacture of such articles are provided. The articles of the invention comprise a rotatable core; a plurality of surface treating segments, the segments having first ends adjacent the core and second ends opposite the first ends; and a cured, expanded adhesive composition bonding the surface treating segment to the core, the adhesive composition comprising (a) an organic epoxide compound having an epoxide functionality of at least 1, (b) an epoxide hardener, (c) a film-forming material, and (d) a foaming agent; wherein the expanded adhesive provides a substantially continuous bond area extending from the core into and around the first end of the segments.Type: GrantFiled: November 16, 1995Date of Patent: December 7, 1999Assignee: 3M Innovative Properties CompanyInventor: Thomas E. Close
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Patent number: 5958794Abstract: A method of modifying an exposed surface of a semiconductor wafer that includes the steps of:(a) contacting the surface with a fixed abrasive article having a three-dimensional textured abrasive surface that includes a plurality of abrasive particles and a binder in the form of a pre-determined pattern; and(b) relatively moving the wafer and the fixed abrasive article to modify said surface of the wafer.Type: GrantFiled: August 8, 1996Date of Patent: September 28, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Wesley J. Bruxvoort, Scott R. Culler, Kwok-Lun Ho, David A. Kaisaki, Carl R. Kessel, Thomas P. Klun, Heather K. Kranz, Robert P. Messner, Richard J. Webb, Julia P. Williams
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Patent number: 5924917Abstract: Methods for preparing abrasive articles and novel methods of making abrasive articles are presented. One method includes inserting a fibrous material adjacent an interior surface of a drum. A composition comprising an organic binder precursor material is then placed in the drum, and the drum is rotated such that centrifugal forces distribute the composition, including the organic binder precursor material, uniformly about the fibrous material. The composition is exposed to conditions sufficient to solidify the organic binder precursor material such that an endless, flexible, seamless substrate is formed having an outer surface formed adjacent the interior surface of the drum, an inner surface opposite the outer surface and the fibrous material embedded therein. Coated abrasives formed by this method, as well as other methods, are provided wherein an effective amount of a fibrous reinforcing material is engulfed within an organic polymeric binder material.Type: GrantFiled: October 24, 1997Date of Patent: July 20, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Harold W. Benedict, Donna W. Bange, Gary L. Heacox, Timothy J. Trudeau
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Patent number: 5919549Abstract: Abrasive articles and a method for the manufacture of the articles are described. The articles comprise a backing having a first major surface and a second major surface; a first resin layer comprising a first hardened resin, the first resin layer extending over the first major surface of the backing; abrasive particles adhered within the first resin layer; a second resin layer applied over the first resin layer, the second resin layer comprising a second hardened resin; and a lofty, three dimensional, nonwoven web of fibers bonded to one another at their mutual contact points and extending through the first and second resin layers. The dry coating weights of the first and second hardened resins are about 400 g/m.sup.2 or greater and preferably greater than about 600 g/m.sup.2.Type: GrantFiled: November 27, 1996Date of Patent: July 6, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Loc X. Van, Eugene J. Miller, Leonard E. Nelson
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Patent number: 5900385Abstract: A compound having the formula Li.sub.q Cr.sub.x-y Ni.sub.y Mn.sub.2-x O.sub.4+z where q.gtoreq.2, 1.0.ltoreq.x.ltoreq.1.25, 0<y<0.9, and z.gtoreq.0. The invention also features an electrode composition containing this compound and processes for preparing a compound having the formula Li.sub.q Cr.sub.x-y Ni.sub.y Mn.sub.2-x O.sub.4+z where q.gtoreq.2, 1.0.ltoreq.x.ltoreq.1.25, 0<y<0.9, and z.gtoreq.0.Type: GrantFiled: October 15, 1997Date of Patent: May 4, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jeffrey R. Dahn, Tao Zheng
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Patent number: 5821271Abstract: The present invention comprises a metal complex capable of being dispersed in or alternatively, formed in a water-absorbing article having one or more metal ions situated within a sponge, at least one chelating polymer chelated to the transition metal ion and at least one potentiator chelated to the transition metal ion.Type: GrantFiled: June 7, 1996Date of Patent: October 13, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Karl F. Roenigk
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Patent number: 5811186Abstract: Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments, such as sheath-core and side-by-side filaments, comprising a first plastic component and a second lower-melting component defining all or at least part of the material-air boundary of the filaments. The filaments can be made by melt-extruding thermoplastics to form hot filaments, cooling and solidifying the hot filaments, and recovering the solidified filaments without any substantial tension being placed thereon. Aggregations of the filaments can be made in the form of floor matting and abrasive articles.Type: GrantFiled: September 24, 1997Date of Patent: September 22, 1998Assignee: Minnesota Mining and Manufacturing, Inc.Inventors: Philip G. Martin, Gary L. Olson, Dennis G. Welygan
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Patent number: 5783303Abstract: A low VOC curable water-based coating composition is provided. The composition includes a urethane/acrylic copolymer having a Tg of greater than about 50.degree. C., a polyoxyethylene aryl ether plasticizer, an alkaline-stable crosslinker, and water, wherein the curable water-based coating composition includes less than about 5 wt-% volatile organic compounds, based on the total weight of the composition.Type: GrantFiled: January 31, 1997Date of Patent: July 21, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Alexander C. Tsuei
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Patent number: 5783538Abstract: A detergent composition comprising the following ingredients: an inorganic alkali salt, a water-insoluble organic solvent, an amine, a pyrrolidone compound, polyhydric alcohol, anionic surface active agent, and water.Type: GrantFiled: December 12, 1996Date of Patent: July 21, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Takatoshi Totoki
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Patent number: 5744440Abstract: Cleaning compositions are presented which surprising exhibit increased cleaning performance as the amount of solubilizing coupler is increased beyond that necessary to fully solubilize a very slightly water-soluble organic solvent component. Methods of use of the compositions to remove hydrophobic soils and soap scum are also described.Type: GrantFiled: February 6, 1996Date of Patent: April 28, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Augustine Liu
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Patent number: 5733825Abstract: Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments, such as sheath-core and side-by-side filaments, comprising a first plastic component and a second lower-melting component defining all or at least part of the material-air boundary of the filaments. The filaments can be made by melt-extruding thermoplastics to form hot filaments, cooling and solidifying the hot filaments, and recovering the solidified filaments without any substantial tension being placed thereon. Aggregations of the filaments can be made in the form of floor matting and abrasive articles.Type: GrantFiled: November 27, 1996Date of Patent: March 31, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Philip G. Martin, Gary L. Olson, Dennis G. Welygan
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Patent number: 5725789Abstract: Oil and water repellent compositions for the treatment of fiber containing substrates such as fabric and the like, substrates treated with these compositions and methods for the treatment of substrates are described. The compositions of the invention comprise (a) a polyalkoxylated polyurethane and (b) a fluorochemical acrylate polymer comprising the polymerized reaction product of a fluorinated acrylate or methacrylate monomer, at least one alkyl acrylate or methacrylate monomer and a polymerizable cationic emulsifier comprising a quaternary amine surfactant. Additionally, (c) a polyalkylene glycol fluorochemical acrylate copolymer and (d) a fluorochemical adipate ester can also be included within the compositions. The above components are blended together within the composition at a weight ratios of (a):(b), or (a)+(c):(b), or (a)+(c)+(d):(b) of from 19:1 to 1:19 and preferably about 1:1.Type: GrantFiled: November 13, 1996Date of Patent: March 10, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles D. Huber, Michael A. Yandrasits
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Patent number: 5725617Abstract: Abrasive articles having an encapsulated lubricant are described. In one aspect, the articles are characterized by a base substrate comprising a plurality of polymeric fibers adhered to one another at mutual contact points, the substrate having a base weight within the range from 20 to 10,000 g/m.sup.2, abrasive grains adhered to the substrate and a plurality of lubricant capsules adhered to the substrate the capsules comprising a continuous shell with lubricant therein, and the shell comprising a cured thermosetting resin. In another aspect, a composite abrasive article is characterized by at least two layers of the aforementioned abrasive article compressed together and adhered by a binder, the composite article having a flexural modulus of not more than 100 kgf/cm.sup.2.Type: GrantFiled: March 21, 1997Date of Patent: March 10, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Hironori Hagiwara, Ikuko Yamato