Patents Assigned to Plastics Research Corporation
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Patent number: 9049777Abstract: A conductive thermoset material is provided that provides shielding against electromagnetic radiation. The conductive thermoset material includes an intermixed conductive material dispersed essentially throughout. An antisettling additive is present in the conductive thermoset material to support dispersion, optionally, homogenous dispersion of the conductive material in the resin. The conductive thermoset material is formable into one or more articles. The articles may be transportable and resistant to significant conductivity changes by contact with other surfaces.Type: GrantFiled: October 31, 2011Date of Patent: June 2, 2015Assignee: Plastics Research CorporationInventors: Brian A. Beach, Thomas Atkins
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Patent number: 6401408Abstract: A stake having first and second generally planar members intersecting along a common longitudinal axis extending from a leading end adapted for ground penetration to a trailing end with a striking surface includes a plurality of steps toward the trailing end adapted for supporting posts of varying diameters. Support pads extend in a circumferential direction about the longitudinal axis from the steps to provide a support surface for securing a posts of varying diameters and/or shapes with a fastener. In one embodiment, the stake includes a number of holes extending through at least one of the first and second members and the first and second members include scalloped edges with a common apex at the leading end. In another embodiment, the second member includes a triangular portion with an apex displaced relative to the apex of the first member which may include a triangular or trapezoidal portion.Type: GrantFiled: January 29, 2001Date of Patent: June 11, 2002Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Richard C. Kruyer, Richard A. Gauthier
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Patent number: 5971176Abstract: A display rack supported by a primary rack is disclosed. The display rack may include an I-beam connector for connecting the display rack to the bottom of an I-beam of the primary rack. Alternatively, the display rack may include an extension which has holes for receiving fasteners that are used to secure the display rack 10 to a primary rack. The display rack includes an end plate secured to a distal end of a center support. The center support has a connector at its proximal end for connection to the primary rack. A lateral support element is connected to the center support and the end plate. The lateral support element preferably includes right and left side portions and a transverse portion. The transverse portion extends parallel to the end plate while right and left side portions are parallel to one another to provide lateral support for strips of material retained in the display rack.Type: GrantFiled: March 13, 1998Date of Patent: October 26, 1999Assignee: Plastics Research CorporationInventor: Michael M. MacDonald
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Patent number: 5601279Abstract: A modular fence construction for use with a pair of posts installed in a ground mass. The posts are laterally spaced from each other and have at least one transverse support member affixed thereto. The modular fence construction comprises a plurality of pickets and at least one transverse rail affixed to the plurality of pickets. The transverse rail includes a channel adapted to receive the at least one transverse support member. The plurality of pickets and the at least one transverse rail are formed as a unitary piece and are adapted to mate with like unitary pieces to provide the modular fence construction.Type: GrantFiled: June 7, 1995Date of Patent: February 11, 1997Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Robert L. Kniss, William D. Goslin, Richard W. Cantley, James Grzybowski, James Gruda
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Patent number: 4093072Abstract: A variable attenuation support system for a payload. A base support and a payload support are separated. A plurality of mounting pads are affixed to the base support, one such pad substantially at each corner of a first imaginary shaped plane. A plurality of mounting pads are affixed to the payload support, one such pad substantially at each corner of a second imaginary shaped plane which is similar in shape to, but larger than, and parallel to, the first plane. The planes are spaced apart and are relatively centered with corresponding sides parallel. A pair of pads are formed at each of the corresponding corners of the planes. An adjustable shock mount is provided for each of the pairs of pads. Each adjustable shock mount comprises a plurality of separable resilient shock absorbers, means for connecting a first one of the shock absorbers between the corresponding pair of pads, and means for releasably locking at least a second one of the shock absorbers in between the corresponding pair of pads.Type: GrantFiled: February 17, 1976Date of Patent: June 6, 1978Assignee: Plastics Research CorporationInventor: Robert R. Black, Jr.
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Patent number: D441097Type: GrantFiled: September 8, 2000Date of Patent: April 24, 2001Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Christopher J. Waites, Marcee N. Milletics, Richard C. Kruyer, David J. Stob
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Patent number: D442700Type: GrantFiled: May 3, 2000Date of Patent: May 22, 2001Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Marcee N. Milletics, Christopher J. Waites, David J. Stob
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Patent number: D446868Type: GrantFiled: September 8, 2000Date of Patent: August 21, 2001Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Richard C. Kruyer, Richard A. Gauthier
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Patent number: D452914Type: GrantFiled: February 27, 2001Date of Patent: January 8, 2002Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Christopher J. Waites, Marcee N. Milletics, Richard C. Kruyer, David J. Stob
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Patent number: D457652Type: GrantFiled: February 27, 2001Date of Patent: May 21, 2002Assignee: Plastics Research CorporationInventors: Carl I. Schwartz, Marcee N. Milletics, Christopher J. Waites, David J. Stob
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Patent number: D647685Type: GrantFiled: November 1, 2010Date of Patent: October 25, 2011Assignee: Plastics Research CorporationInventor: Thomas Atkins
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Patent number: D422643Type: GrantFiled: July 28, 1999Date of Patent: April 11, 2000Assignee: Plastics Research CorporationInventors: William Dempster Goslin, Mark J. Bachner, Richard A. Gauthier, John Bell Payne, Larry Allen Demaree
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Patent number: D424271Type: GrantFiled: July 28, 1999Date of Patent: May 2, 2000Assignee: Plastics Research CorporationInventors: William Dempster Goslin, Mark J. Bachner, Richard A. Gauthier, John Bell Payne, Larry Allen Demaree
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Patent number: D424893Type: GrantFiled: July 28, 1999Date of Patent: May 16, 2000Assignee: Plastics Research CorporationInventors: William Dempster Goslin, Mark J. Bachner, Richard A. Gauthier, John Bell Payne, Larry Allen Demaree
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Patent number: D425767Type: GrantFiled: July 28, 1999Date of Patent: May 30, 2000Assignee: Plastics Research CorporationInventors: William Dempster Goslin, Mark J. Bachner, Richard A. Gauthier, John Bell Payne, Larry Allen Demaree