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).

  • Publication number: 20220392662
    Abstract: 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: Application
    Filed: September 28, 2020
    Publication date: December 8, 2022
    Inventors: Dipankar Ghosh, Andrew C. Lottes, Gengbang Jin
  • Patent number: 11262387
    Abstract: 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: Grant
    Filed: September 27, 2019
    Date of Patent: March 1, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: 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
  • Patent number: 10720767
    Abstract: 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: Grant
    Filed: January 25, 2018
    Date of Patent: July 21, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. Schubert, Christopher J. Evoniuk, Jens Weichold, Andrew C. Lottes
  • Publication number: 20200110114
    Abstract: 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: Application
    Filed: September 27, 2019
    Publication date: April 9, 2020
    Inventors: 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
  • Publication number: 20190379198
    Abstract: 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: Application
    Filed: January 25, 2018
    Publication date: December 12, 2019
    Inventors: Robert J. Schubert, Christopher J. Evoniuk, Jens Weichold, Andrew C. Lottes
  • Patent number: 10121570
    Abstract: 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: Grant
    Filed: October 14, 2015
    Date of Patent: November 6, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Nanayakkara L. D. Somasiri, Paul V. Huynh, Andrew C. Lottes, William L. Taylor, Levent Biyikli, Carl E. Fisher
  • Publication number: 20170250008
    Abstract: 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: Application
    Filed: October 14, 2015
    Publication date: August 31, 2017
    Inventors: Nanayakkara L.D. SOMASIRI, Paul V. HUYNH, Andrew C. LOTTES, William L. TAYLOR, Levent BIYIKLI, Carl E. FISHER
  • Patent number: 9390833
    Abstract: 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: Grant
    Filed: December 23, 2014
    Date of Patent: July 12, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Andrew C. Lottes, Nanayakkara L. D. Somasiri, Jimmie R. Baran, Jr., Paul V. Huynh
  • Patent number: 9349498
    Abstract: 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: Grant
    Filed: December 23, 2014
    Date of Patent: May 24, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Andrew C. Lottes, Nanayakkara L. D. Somasiri, Jimmie R. Baran, Jr., Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
  • Publication number: 20150137047
    Abstract: 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: Application
    Filed: December 23, 2014
    Publication date: May 21, 2015
    Inventors: Andrew C. Lottes, Nanayakkara L.D. Somasiri, Jimmie R. Baran, JR., Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
  • Publication number: 20150108414
    Abstract: 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: Application
    Filed: December 23, 2014
    Publication date: April 23, 2015
    Inventors: Andrew C. Lottes, Nanayakkara L.D. Somasiri, Jimmie R. Baran, JR., Paul V. Huynh
  • Patent number: 8974706
    Abstract: 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: Grant
    Filed: December 7, 2010
    Date of Patent: March 10, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Nanayakkara L. D. Somasiri, Jimmie R. Baran, Jr., Andrew C. Lottes, Ge Jiang, Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
  • Publication number: 20110140052
    Abstract: 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: Application
    Filed: December 7, 2010
    Publication date: June 16, 2011
    Inventors: Nanayakkara L.D. Somasiri, Jimmie R. Baran, JR., Andrew C. Lottes, Ge Jiang, Badri Veeraraghavan, Paul V. Huynh, Dipankar Ghosh
  • Patent number: 7888604
    Abstract: 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: Grant
    Filed: April 11, 2006
    Date of Patent: February 15, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Kohichiro Kawate, Andrew C. Lottes, James G. Vana, Jr., Barbara L. Birrell, Alexander W. Barr
  • Publication number: 20080171182
    Abstract: 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: Application
    Filed: April 11, 2006
    Publication date: July 17, 2008
    Inventors: Kohichiro Kawate, Andrew C. Lottes, James G. Vana, Barbara L. Birrell, Alexander W. Barr
  • Patent number: 7052772
    Abstract: 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: Grant
    Filed: August 14, 2003
    Date of Patent: May 30, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Andrew C. Lottes, Mark A. Roehrig
  • Patent number: 6391954
    Abstract: 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: Grant
    Filed: June 14, 2001
    Date of Patent: May 21, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
  • Publication number: 20010041260
    Abstract: 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: Application
    Filed: June 14, 2001
    Publication date: November 15, 2001
    Applicant: 3M Innovative Properties Company
    Inventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
  • Patent number: 6296931
    Abstract: 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: Grant
    Filed: September 28, 1999
    Date of Patent: October 2, 2001
    Assignee: 3M Innovatice Properties Company
    Inventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
  • Patent number: 5914157
    Abstract: 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: Grant
    Filed: August 31, 1995
    Date of Patent: June 22, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Daniel C. Munson, Andrew C. Lottes, Angelo Psellas, Denis A. Brisson