Patents by Inventor Andrew C. Lottes
Andrew C. Lottes 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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Publication number: 20220392662Abstract: An article incorporates an enhanced dielectric breakdown strength and enhanced energy storage density composite material comprising a polymer matrix and hybrid filler particles comprising graphene oxide (GO) and a thermally conductive ceramic material having a thermal conductivity of at least 2 W/(m#K). The hybrid filler particles are distributed within the polymer matrix in a weight percentage less than about 15 weight percent.Type: ApplicationFiled: September 28, 2020Publication date: December 8, 2022Inventors: Dipankar Ghosh, Andrew C. Lottes, Gengbang Jin
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Patent number: 11262387Abstract: A device to measure the voltage at a test point, also referred to as a test point voltage sensor, comprises a housing formed from a first material and a second material, wherein the first material comprises an insulating material and the second material comprises a conductive or semiconductive material. The housing includes an opening configured to cover a test point of a cable accessory. The device further includes a pressure pad, disposed in the housing, having a conductive mating surface configured to contact a test point of the basic insulation plug or end plug. The device further includes a low side capacitor embedded in the housing and electrically coupled to the conductive mating surface. The device further includes a signal wire electrically coupled to the low side capacitor.Type: GrantFiled: September 27, 2019Date of Patent: March 1, 2022Assignee: 3M Innovative Properties CompanyInventors: David V. Mahoney, Carl J. Wentzel, Shuguang Wu, Laszlo Markos, Andrew C. Lottes, James S. McHattie, Christopher R. Wilson, Richard D. Twigg, Pete D. Jordan, Sean C. Davis
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Multilayer stress control article and dry termination for medium and high voltage cable applications
Patent number: 10720767Abstract: A tubular stress control article having an axial bore with a length comprises a first and innermost layer formed from an electrical stress control composition having a filler material comprising nanosilica-modified inorganic particles and a discontinuous arrangement of conductive material dispersed in an elastomeric material. At least a portion of the conductive material is in durable electrical contact with the inorganic particles. The article further comprises a second layer disposed on the first layer, the second layer comprising an electrical insulation material. The article also comprises a third layer disposed on the second layer, the third layer comprising an elastomeric stress control material. The article further comprises a fourth layer disposed on the third layer, the fourth layer comprising a track-resistant elastomeric material. Each of the first, second, third, and fourth layers are substantially continuous along the length of the axial bore.Type: GrantFiled: January 25, 2018Date of Patent: July 21, 2020Assignee: 3M Innovative Properties CompanyInventors: Robert J. Schubert, Christopher J. Evoniuk, Jens Weichold, Andrew C. Lottes -
Publication number: 20200110114Abstract: A device to measure the voltage at a test point, also referred to as a test point voltage sensor, comprises a housing formed from a first material and a second material, wherein the first material comprises an insulating material and the second material comprises a conductive or semiconductive material. The housing includes an opening configured to cover a test point of a cable accessory. The device further includes a pressure pad, disposed in the housing, having a conductive mating surface configured to contact a test point of the basic insulation plug or end plug. The device further includes a low side capacitor embedded in the housing and electrically coupled to the conductive mating surface. The device further includes a signal wire electrically coupled to the low side capacitor.Type: ApplicationFiled: September 27, 2019Publication date: April 9, 2020Inventors: David V. Mahoney, Carl J. Wentzel, Shuguang WU, Laszlo Markos, Andrew C. Lottes, James S. McHattie, Christopher R. Wilson, Richard D. Twigg, Pete D. Jordan, Sean C. Davis
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MULTILAYER STRESS CONTROL ARTICLE AND DRY TERMINATION FOR MEDIUM AND HIGH VOLTAGE CABLE APPLICATIONS
Publication number: 20190379198Abstract: A tubular stress control article having an axial bore with a length comprises a first and innermost layer formed from an electrical stress control composition having a filler material comprising nanosilica-modified inorganic particles and a discontinuous arrangement of conductive material dispersed in an elastomeric material. At least a portion of the conductive material is in durable electrical contact with the inorganic particles. The article further comprises a second layer disposed on the first layer, the second layer comprising an electrical insulation material. The article also comprises a third layer disposed on the second layer, the third layer comprising an elastomeric stress control material. The article further comprises a fourth layer disposed on the third layer, the fourth layer comprising a track-resistant elastomeric material. Each of the first, second, third, and fourth layers are substantially continuous along the length of the axial bore.Type: ApplicationFiled: January 25, 2018Publication date: December 12, 2019Inventors: Robert J. Schubert, Christopher J. Evoniuk, Jens Weichold, Andrew C. Lottes -
Patent number: 10121570Abstract: An enhanced breakdown strength dielectric material includes a base dielectric layer having first and second opposing major surfaces. A first stress mitigating layer is disposed on the first major surface of the base dielectric layer. A second stress mitigating layer disposed on the second major surface of the base dielectric layer. A volume conductivity of at least one of the first and second stress mitigating layers is at least 2 times a volume conductivity of the base dielectric layer.Type: GrantFiled: October 14, 2015Date of Patent: November 6, 2018Assignee: 3M Innovative Properties CompanyInventors: Nanayakkara L. D. Somasiri, Paul V. Huynh, Andrew C. Lottes, William L. Taylor, Levent Biyikli, Carl E. Fisher
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Publication number: 20170250008Abstract: An enhanced breakdown strength dielectric material comprises a base dielectric layer having first and second opposing major surfaces. A first stress mitigating layer is disposed on the first major surface of the base dielectric layer. A second stress mitigating layer disposed on the second major surface of the base dielectric layer. A volume conductivity of at least one of the first and second stress mitigating layers is at least 2 times a volume conductivity of the base dielectric layer.Type: ApplicationFiled: October 14, 2015Publication date: August 31, 2017Inventors: Nanayakkara L.D. SOMASIRI, Paul V. HUYNH, Andrew C. LOTTES, William L. TAYLOR, Levent BIYIKLI, Carl E. FISHER
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Patent number: 9390833Abstract: Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.Type: GrantFiled: December 23, 2014Date of Patent: July 12, 2016Assignee: 3M Innovative Properties CompanyInventors: Andrew C. Lottes, Nanayakkara L. D. Somasiri, Jimmie R. Baran, Jr., Paul V. Huynh
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Patent number: 9349498Abstract: Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.Type: GrantFiled: December 23, 2014Date of Patent: May 24, 2016Assignee: 3M Innovative Properties CompanyInventors: Andrew C. Lottes, Nanayakkara L. D. Somasiri, Jimmie R. Baran, Jr., Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
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Publication number: 20150137047Abstract: Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.Type: ApplicationFiled: December 23, 2014Publication date: May 21, 2015Inventors: Andrew C. Lottes, Nanayakkara L.D. Somasiri, Jimmie R. Baran, JR., Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
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Publication number: 20150108414Abstract: Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.Type: ApplicationFiled: December 23, 2014Publication date: April 23, 2015Inventors: Andrew C. Lottes, Nanayakkara L.D. Somasiri, Jimmie R. Baran, JR., Paul V. Huynh
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Patent number: 8974706Abstract: Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.Type: GrantFiled: December 7, 2010Date of Patent: March 10, 2015Assignee: 3M Innovative Properties CompanyInventors: Nanayakkara L. D. Somasiri, Jimmie R. Baran, Jr., Andrew C. Lottes, Ge Jiang, Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
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Publication number: 20110140052Abstract: Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.Type: ApplicationFiled: December 7, 2010Publication date: June 16, 2011Inventors: Nanayakkara L.D. Somasiri, Jimmie R. Baran, JR., Andrew C. Lottes, Ge Jiang, Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
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Patent number: 7888604Abstract: Provided is a method of connecting conductive traces on one substrate to conductive traces on another substrate using an adhesive containing conductive particles and the resulting article.Type: GrantFiled: April 11, 2006Date of Patent: February 15, 2011Assignee: 3M Innovative Properties CompanyInventors: Kohichiro Kawate, Andrew C. Lottes, James G. Vana, Jr., Barbara L. Birrell, Alexander W. Barr
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Publication number: 20080171182Abstract: Provided is a method of connecting conductive traces on one substrate to conductive traces on another substrate using an adhesive containing conductive particles and the resulting article.Type: ApplicationFiled: April 11, 2006Publication date: July 17, 2008Inventors: Kohichiro Kawate, Andrew C. Lottes, James G. Vana, Barbara L. Birrell, Alexander W. Barr
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Patent number: 7052772Abstract: The present invention provides a material for packaging electronic components. In one embodiment, the packaging material comprises (a) a puncture resistant film having opposed first and second major surfaces; (b) a substantially continuous metal free light transmissible layer disposed on the first surface of the puncture resistant film, wherein the light transmissible layer comprises at least one pair of polymer layer and transparent conductive oxide layer; and (c) a heat sealable layer disposed on the light transmissible layer or on the second surface of the puncture resistant film. Other embodiments are provided.Type: GrantFiled: August 14, 2003Date of Patent: May 30, 2006Assignee: 3M Innovative Properties CompanyInventors: Andrew C. Lottes, Mark A. Roehrig
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Patent number: 6391954Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt. % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.Type: GrantFiled: June 14, 2001Date of Patent: May 21, 2002Assignee: 3M Innovative Properties CompanyInventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
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Publication number: 20010041260Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.Type: ApplicationFiled: June 14, 2001Publication date: November 15, 2001Applicant: 3M Innovative Properties CompanyInventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
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Patent number: 6296931Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.Type: GrantFiled: September 28, 1999Date of Patent: October 2, 2001Assignee: 3M Innovatice Properties CompanyInventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
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Patent number: 5914157Abstract: The incorporation of a non-thermosettable phenolic tackifying resin surprisingly provides improved solvent free, hot melt processing of hydrocarbon elastomers with crosslinking promoters to form pressure sensitive adhesive tapes. The tapes advantageously have a desirable balance of the properties of resistance to slow rate peel and fast rate peel adhesion.Type: GrantFiled: August 31, 1995Date of Patent: June 22, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Daniel C. Munson, Andrew C. Lottes, Angelo Psellas, Denis A. Brisson