Patents by Inventor Daniel B. Pendergrass, Jr.
Daniel B. Pendergrass, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7840305Abstract: The disclosure relates to abrasive articles useful in chemical-mechanical polishing (CMP), the articles including a substrate with opposite major surfaces, an abrasive material overlaying at least a portion of at least one of the major surfaces, and at least one of a radio frequency identification (RFID) tag, a RFID tag reader, or a sensor for providing CMP information to a transmitter positioned near the substrate, the transmitter positioned near the substrate and adapted to wirelessly receive CMP information and wirelessly transmit the CMP information to a remote receiver. The disclosure also relates to a CMP pad conditioner for wirelessly communicating CMP information to a remote receiver, a CMP process monitoring system for wirelessly communicating CMP information to a remote receiver, and a method for conditioning a CMP pad using a CMP process monitoring system for wireless communicating CMP information to a remote receiver.Type: GrantFiled: June 28, 2006Date of Patent: November 23, 2010Assignee: 3M Innovative Properties CompanyInventors: Andrew H. Behr, Brian D. Goers, Vincent J. Laraia, Gary M. Palmgren, Daniel B. Pendergrass, Jr.
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Publication number: 20090201606Abstract: Internally replenished gas-containing enclosures and methods of internally replenishing an enclosure are described.Type: ApplicationFiled: April 17, 2009Publication date: August 13, 2009Inventors: Ellen Burts-Cooper, Robert C. Fitzer, Daniel B. Pendergrass, JR.
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Patent number: 7538972Abstract: Internally replenished gas-containing enclosures are described. Such enclosures include a replenishing gas source internal to the enclosure, wherein the gas source comprises a gas contained within a permeable membrane. Exemplary gas sources include a plurality of bubbles and pouches. Materials useful for the permeable membrane include glass, glass ceramics, metals, metal oxides, polymeric films, as well as combinations of such materials. The gas source may be located within the enclosure or it may be incorporated into a resin (e.g., an adhesive or a gasket) positioned between sections of an enclosure. Methods of internally replenishing an enclosure are also described.Type: GrantFiled: May 5, 2005Date of Patent: May 26, 2009Assignee: 3M Innovative Properties CompanyInventors: Ellen Burts-Cooper, Robert C. Fitzer, Daniel B. Pendergrass, Jr.
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Patent number: 6786810Abstract: A process for planarizing, polishing, or providing other modification of a wafer surface or other workpiece. The process includes using an abrasive article having a textured abrasive coating affixed to a backing. The abrasive article includes a monitoring element, such as a window, to allow transmission of radiation therethrough. The radiation level is monitored throughout the planarization process to determine the approach of the desired endpoint. The window in the abrasive coating can be an area devoid of abrasive coating or having minimal or a thinned abrasive coating.Type: GrantFiled: September 24, 2002Date of Patent: September 7, 2004Assignee: 3M Innovative Properties CompanyInventors: Michael J. Muilenburg, Chong-Yong J. Kim, Jerry J. Fizel, Richard J. Webb, John J. Gagliardi, Daniel B. Pendergrass, Jr., Robert J. Streifel, Wesley J. Bruxvoort
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Patent number: 6604985Abstract: A process for planarizing, polishing, or providing other modification of a wafer surface or other workpiece. The process includes using an abrasive article having a textured abrasive coating affixed to a backing. The abrasive article includes a monitoring element, such as a window, to allow transmission of radiation therethrough. The radiation level is monitored throughout the planarization process to determine the approach of the desired endpoint. The window in the abrasive coating can be an area devoid of abrasive coating or having minimal or a thinned abrasive coating.Type: GrantFiled: November 7, 2002Date of Patent: August 12, 2003Assignee: 3M Innovative Properties CompanyInventors: Michael J. Muilenburg, Chong-Yong J. Kim, Jerry J. Fizel, Richard J. Webb, John J. Gagliardi, Daniel B. Pendergrass, Jr., Robert J. Streifel, Wesley J. Bruxvoort
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Patent number: 6264533Abstract: An apparatus and method for abrasively processing an article involves the use of an abrasive product provided with a machine discernable pattern representative of information of varying types. The pattern is read while the abrasive product moves relative to the article, and is used to control the movement of the abrasive product relative to the article. The pattern may include one or more of a machine discernable electrical characteristic, optical characteristic, topographic characteristic or magnetic characteristic. Reading the pattern may involve one or more of electrically, optically, mechanically or magnetically reading the machine discernable pattern provided on the abrasive product. The pattern may include one or more of indicia, protrusions, depressions, holes, voids, color or pigment variations, bar codes, magnetic transitions or periodic markings. The pattern may include one or more of indexing information, servo information, alignment information or abrasive product identification information.Type: GrantFiled: May 28, 1999Date of Patent: July 24, 2001Assignee: 3M Innovative Properties CompanyInventors: Charles R. Kummeth, Michael J. Muilenburg, Gary B. Forsberg, Robert J. Streifel, Daniel B. Pendergrass, Jr.
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Patent number: 6234875Abstract: A method of modifying a surface comprising the steps of: (a) contacting the surface to be modified with a working surface of an abrasive article, the abrasive article comprising a phase separated polymer having a first phase and a second phase, the first phase being harder than the second phase; and (b) relatively moving the surface to be modified and the fixed abrasive article to remove material from the surface to be modified in the absence of an abrasive slurry.Type: GrantFiled: June 9, 1999Date of Patent: May 22, 2001Assignee: 3M Innovative Properties CompanyInventor: Daniel B. Pendergrass, Jr.
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Patent number: 5961967Abstract: A candle is provided for delivery of an active ingredient comprising a multiphase construction of a continuous first matrix and a second matrix dispersed therein. The first matrix comprises a thermoplastic material, and the second matrix comprises a thermoplastic material which additionally comprises an active ingredient. The second matrix is a discrete phase of small bodies having size in longest dimension between about 0.05 microns to about 5 mm.Type: GrantFiled: September 6, 1996Date of Patent: October 5, 1999Assignee: 3M Innovative Properties CompanyInventors: W. Nigel Powell, Daniel B. Pendergrass, Jr.
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Patent number: 5854308Abstract: Water-based pigmented ink formulations are disclosed including a water soluble or water dispersible silicone-containing polymer additive comprising a vinyl silicone polymer. The additive significantly reduces kogation, mudcracking, and banding in some or all of the pigmented ink formulations.Type: GrantFiled: February 29, 1996Date of Patent: December 29, 1998Assignee: Minnesota Mining And Manufacturing CompanyInventors: Richard J. Kuo, Smarajit Mitra, Charles E. Boyer, III, Daniel B. Pendergrass, Jr.
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Patent number: 5589194Abstract: Microcapsules are prepared by dispersing or dissolving an active component or components in a solid matrix-forming material that has been thermally softened to form an encapsulation composition. The encapsulation composition is injected as an intact stream into a quenching liquid to provide solid microcapsules.Type: GrantFiled: September 20, 1993Date of Patent: December 31, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Alexander C. Tsuei, Lorenz Kogl, III, Daniel B. Pendergrass, Jr.
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Patent number: 5565148Abstract: An apparatus for delivering one or more aromas at selected times includes a housing with a receptacle and an aroma delivery device detachably received in the receptacle. The aroma delivery device includes a carrier having a plurality of aroma-bearing elements that are selectively communicated with an air passageway for providing one or more aromas as desired. The device is especially useful for providing a realistic sensory experience in an interactive or non-interactive use, and may be used in such diverse settings as the entertainment industry, the educational training field or a medical arena.Type: GrantFiled: March 16, 1995Date of Patent: October 15, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel B. Pendergrass, Jr.
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Patent number: 5449399Abstract: Writing instruments are provided comprising a) a friction transferable binder comprising a colorant, and b) frangible microcapsules containing a liquid solvent. The writing instrument contains sufficient microcapsules to provide a Coloration Uniformity Percentage (defined herein) of at least about 25%.Type: GrantFiled: June 7, 1994Date of Patent: September 12, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Alexander C.-R. Tsuei, Daniel B. Pendergrass, Jr.
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Patent number: 5401505Abstract: Microcapsules containing a shell wall and a liquid fill are produced by an interfacial polymerization reaction between a polyfunctional aziridine and at least one other polyfunctional organic coreactant selected from the group of polyacid halides, polycarboxylic acids, polyamines, polyhydroxyl-containing compounds, polythiol-containing compounds, polyisocyanates, polyisothiocyanates, and mixtures thereof.Type: GrantFiled: June 1, 1992Date of Patent: March 28, 1995Assignee: Minnesota Mining and ManufacturingInventors: Bradley L. Duell, Daniel B. Pendergrass, Jr.
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Patent number: 5395047Abstract: A device for delivery of volatile materials comprising a volatile material delivery layer, a support layer and a repositionable adhesive layer. Devices so constructed may be applied to any desired substrate without fear of harming the surface of the substrate.Type: GrantFiled: May 24, 1993Date of Patent: March 7, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel B. Pendergrass, Jr.
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Patent number: 5391374Abstract: A fragrance-delivery composition is provided having cake-forming components and microcapsules containing fragrance oil. The composition is a coherent cake, and has a VOC content less than 250 grams of per liter less water, fragrance oil and exempt solvents.Type: GrantFiled: May 10, 1993Date of Patent: February 21, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jack W. Charbonneau, Daniel B. Pendergrass, Jr.
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Patent number: 5325721Abstract: Disclosed is a device for selectively indicating strain comprising a layer of polymeric binder and, distributed in or adjacent to the binder layer, microcapsules containing an indicating means, whereby when the binder is stiff, minor flexure of the device causes rupture of the microcapsules and releases the indicating means. This device has a non-stiff state such that a given strain applied to the binder layer in the non-stiff state will not release the indicating means, and a stiff state such that the same given strain applied to the binder layer in the stiff state will release the indicating means. Also disclosed is a method for determining exposure of an article to a given low temperature.Type: GrantFiled: February 17, 1993Date of Patent: July 5, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel B. Pendergrass, Jr.
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Patent number: 5169632Abstract: Microcapsules containing a shell wall and a liquid fill are produced by an interfacial polymerization reaction between a polyfunctional aziridine and at least one other polyfunctional organic coreactant selected from the group of polyacid halides, polycarboxylic acids, polyamines, polyhydroxyl-containing compounds, polythiol-containing compounds, polyisocyanates, polyisothiocyanates, and mixtures thereof.Type: GrantFiled: March 28, 1991Date of Patent: December 8, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Bradley L. Duell, Daniel B. Pendergrass, Jr.
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Patent number: 5128215Abstract: The present invention provides an improved magnetic recording medium comprising a non-magnetic support with at least one magnetic layer comprising a magnetizable pigment dispersed in a binder composition. The binder composition of the present invention comprises a block copolymer, having a hard segment, with a glass transition temperature (T.sub.g) of greater than about 70.degree. C., and a soft segment, having a T.sub.g of less than about -30.degree. C. The binder composition of the present invention has relatively stable physical properties over a range of temperatures, preferably at least 50.degree. C. at more preferably at least 100.degree. C.Type: GrantFiled: May 19, 1989Date of Patent: July 7, 1992Assignee: Minnesota Mining & Manufacturing CompanyInventor: Daniel B. Pendergrass, Jr.
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Patent number: 4935401Abstract: A sheet is provided which upon abrasion of one surface will reveal a preprinted message without removal of a cover layer.Type: GrantFiled: March 10, 1987Date of Patent: June 19, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel B. Pendergrass, Jr.
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Patent number: 4878775Abstract: A device provides liquid material for application to a surface. The device comprises in order at least a carrying substrate, frangible microcapsules containing the liguid to be applied, a raised area around the microcapsules of a structurally rigid material, and a flexible, liquid permeable material overlaying the microcapsules. Pressure on the liquid permeable material ruptures the microcapsules and enables the liquid to flow through the permeable material.Type: GrantFiled: October 28, 1987Date of Patent: November 7, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: R. James Norbury, Daniel B. Pendergrass, Jr.