Patents by Inventor Krishnamachari Gopalan

Krishnamachari Gopalan 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: 20180163032
    Abstract: A combined sealing member is provided that includes a composition comprising two or more polyolefin elastomers selected from the group consisting of a dense, a micro-dense and a dynamic silane-crosslinked polyolefin elastomer having a respective density of less than 0.90 g/cm3, less than 0.70 g/cm3, and less than 0.60 g/cm3. The combined sealing member exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).
    Type: Application
    Filed: December 8, 2017
    Publication date: June 14, 2018
    Applicant: Cooper-Standard Automotive Inc.
    Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
  • Publication number: 20180163901
    Abstract: A hose is provided. The hose has a composition including a silane-crosslinked polyolefin elastomer and a filler. The hose composition exhibits a compression set of from about 5% to about 35%, as measured according to ASTM D 395 Method B (168 hrs at 150 ° C.). The hose composition additionally has a density from about 0.88 g/cm3 to about 1.05 g/cm3. The hose may be used for transferring coolant liquid in a motor of a vehicle and includes a first outer layer of a first silane-crosslinked polyolefin elastomer; a second inner layer of a second silane-crosslinked polyolefin elastomer; and a textile reinforcement layer embedded between the first and second layers of the silane-crosslinked polyolefin elastomers.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 14, 2018
    Applicant: Cooper-Standard Automotive Inc.
    Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
  • Publication number: 20180162109
    Abstract: A roofing membrane and a method of making the same is provided. The roofing membrane includes a top layer having a flame retardant and a first silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3; a scrim layer; and a bottom layer having a flame retardant and a second silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3. The top and bottom layers of the roofing membrane both exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).
    Type: Application
    Filed: December 8, 2017
    Publication date: June 14, 2018
    Applicant: Cooper-Standard Automotive Inc.
    Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Roland Herd-Smith
  • Publication number: 20170240034
    Abstract: The invention relates to automotive weatherstrip material. More specifically, the invention utilizes thermo-expand-able microspheres in the sponge bulb member of the weatherstrip to produce a microcellular structure which provides a lower weight weatherstrip material with improved surface appearance and comparable stiffness to known materials for use in the auto-motive industry, and exhibiting a blown specific gravity of less than about 0.60 g/cc.
    Type: Application
    Filed: May 9, 2017
    Publication date: August 24, 2017
    Applicant: Cooper Standard Automotive Inc.
    Inventors: Krishnamachari Gopalan, Robert Lenhart
  • Patent number: 9663641
    Abstract: The invention relates to automotive weatherstrip material. More specifically, the invention utilizes thermo-expandable microspheres in the sponge bulb member of the weatherstrip to produce a microcellular structure which provides a lower weight weatherstrip material with improved surface appearance and comparable stiffness to known materials for use in the automotive industry, and exhibiting a blown specific gravity of less than about 0.60 g/cc.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: May 30, 2017
    Assignee: COOPER-STANDARD AUTOMOTIVE INC.
    Inventors: Krishnamachari Gopalan, Robert Lenhart
  • Publication number: 20170130876
    Abstract: A hose made from a composition including one or more of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; an one or more of fibers, polyamide powder, and ultra high molecular weight polyethylene powder. A hose comprising an outermost layer formed from a composition comprising: (A) at least one of EPR, EPDM, a silane-grafted polyolefin and a siliconemodified polyolefin; and (B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers.
    Type: Application
    Filed: July 1, 2015
    Publication date: May 11, 2017
    Applicant: COOPER-STANDARD AUTOMOTIVE INC.
    Inventors: Krishnamachari Gopalan, Robert J. Lenhart, Gending Ji, Philippe Moreaux
  • Publication number: 20170030509
    Abstract: A double wall steel tube includes an inner tube wall and an outer tube wall. The inner and outer tube walls are formed from a tubing material including an inner layer of iron steel, first and second outer layers of an alloy of aluminum and silicon, a first intermediate layer disposed between the inner layer and the first outer layer, and a second intermediate layer disposed between the inner layer and the second outer layer. The first and second intermediate layers include aluminum, silicon and iron. The inner and outer tube walls are brazed together.
    Type: Application
    Filed: April 15, 2016
    Publication date: February 2, 2017
    Inventors: Jose Reyes Flores RAMIREZ, Krishnamachari GOPALAN, Lyle OTREMBA
  • Publication number: 20140377475
    Abstract: A cross-linkable UV curable coating layer disposed over flocked fibers on an automotive component requiring improved squeak and itch resistance and freeze release is provided. The coating layer includes an elongated member having along a pre-determined portion of the member flocked fibers. The elongated member finds application as a weatherstrip or seal.
    Type: Application
    Filed: September 9, 2014
    Publication date: December 25, 2014
    Inventors: Krishnamachari GOPALAN, Michael W. PINTER, Jacob J. LAFOREST
  • Publication number: 20140255651
    Abstract: A weatherstrip is configured for engagement with an associated vehicle window. A body of the weatherstrip has regions of high hardness that include soybean oil as an ingredient in the rubber formulation. Flexible seal portions extend outwardly from the body and are adapted for sliding engagement with the associated vehicle window. Preferably, the soybean oil is approximately 1-25 weight % of the rubber formulation in the high hardness regions. The body has a Shore A durometer on the order of 80-95. A method of forming the weatherstrip includes providing a rubber formulation and substituting at least a portion of a plasticizer with fully hydrogenated soybean oil.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: COOPER-STANDARD AUTOMOTIVE INC.
    Inventors: Krishnamachari Gopalan, Robert J. Lenhart
  • Publication number: 20120098207
    Abstract: A cross-linkable UV curable coating layer disposed over flocked fibers on an automotive component requiring improved squeak and itch resistance and freeze release is provided. The coating layer includes an elongated member having along a pre-determined portion of the member flocked fibers. The elongated member finds application as a weatherstrip or seal.
    Type: Application
    Filed: February 10, 2010
    Publication date: April 26, 2012
    Inventors: Krishnamachari Gopalan, Michael W. Pinter, Jacob J. LaForest
  • Patent number: 7152374
    Abstract: A composite extrusion for an automotive seal strip is formed of an extruded body, and a veneer extruded onto the body. The extruded body is composed of ethylene-propylene diene rubber compound. The veneer is composed of a polymer blend that includes the reaction product of an acrylate polymer and a glycidyl acrylate polymer. The reaction of the acrylate polymer and the glycidyl acrylate polymer improves adhesion and also provides a barrier to inhibit migration of vulcanizing agents from the ethylene-propylene diene rubber body into the veneer that would otherwise cause discoloration during use.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: December 26, 2006
    Assignee: GenCorp Inc.
    Inventor: Krishnamachari Gopalan
  • Publication number: 20060272217
    Abstract: A composite extrusion for an automotive seal strip is formed of an extruded body, and a veneer extruded onto the body. The extruded body is composed of ethylene-propylene diene rubber compound. The veneer is composed of a polymer blend that includes the reaction product of an acrylate polymer and a glycidyl acrylate polymer. The reaction of the acrylate polymer and the glycidyl acrylate polymer improves adhesion and also provides a barrier to inhibit migration of vulcanizing agents from the ethylene-propylene diene rubber body into the veneer that would otherwise cause discoloration during use.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 7, 2006
    Inventor: Krishnamachari Gopalan
  • Publication number: 20050100747
    Abstract: A weatherstrip for automotive and motor vehicle window glass comprises a glass contact layer overlying a base extrusion. The base extrusion is formed of a thermoplastic vulcanizate (TPV) comprising ethylene-propylene diene polymer (EPDM) and polypropylene. The glass contact layer is formed of a material composed predominantly of a thermoplastic polyolefin polymer and comprising a silicone-crosslinked thermoset polymer. The thermoset polymer may be the reaction product of a silane-grafted polyolefin and a silicone polymer.
    Type: Application
    Filed: November 9, 2004
    Publication date: May 12, 2005
    Inventors: Krishnamachari Gopalan, Ramaswamy Raj, Christopher Schneider
  • Publication number: 20050084629
    Abstract: A composite extrusion for an automotive seal strip is formed of an extruded body, and a veneer extruded onto the body. The extruded body is composed of ethylene-propylene diene rubber compound. The veneer is composed of a polymer blend that includes the reaction product of an acrylate polymer and a glycidyl acrylate polymer. The reaction of the acrylate polymer and the glycidyl acrylate polymer improves adhesion and also provides a barrier to inhibit migration of vulcanizing agents from the ethylene-propylene diene rubber body into the veneer that would otherwise cause discoloration during use.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 21, 2005
    Inventor: Krishnamachari Gopalan
  • Patent number: 6534147
    Abstract: A weatherstrip having a hard bearing layer with a surface coating for reducing sliding friction between the weatherstrip and a panel is disclosed. A body of the weatherstrip has a relatively low durometer and the bearing layer has a greater durometer, wherein an exposed surface of the bearing layer is covered with a coating, wherein the coating can include a multitude of particles.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: March 18, 2003
    Assignee: Schlegal Corporation
    Inventor: Krishnamachari Gopalan
  • Patent number: 6514604
    Abstract: A weatherstrip having a migration inhibiting layer including a butyl based elastomer, wherein the butyl based elastomer can include a blend of a halogenated butyl and EPDM. The migration inhibiting layer can be located on at least one of a dense portion and an expanded portion of the weatherstrip and is selected to substantially preclude the passage of decomposition products, thereby reducing odor emanation from the strip and discoloration from staining materials. The migration inhibiting layer may also include coloring agents thereby providing a colored weatherstrip.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: February 4, 2003
    Assignee: Schlegel Corporation
    Inventors: Krishnamachari Gopalan, Marion A Royse
  • Publication number: 20020144466
    Abstract: A weatherstrip having a migration inhibiting layer including a butyl based elastomer, wherein the butyl based elastomer can include a blend of a halogenated butyl and EPDM. The migration inhibiting layer can be located on at least one of a dense portion and an expanded portion of the weatherstrip and is selected to substantially preclude the passage of decomposition products, thereby reducing odor emanation from the strip and discoloration from staining materials. The migration inhibiting layer may also include coloring agents thereby providing a colored weatherstrip.
    Type: Application
    Filed: February 2, 2001
    Publication date: October 10, 2002
    Inventors: Krishnamachari Gopalan, Marion A. Royse
  • Publication number: 20020110663
    Abstract: A weatherstrip having a hard bearing layer with a surface coating for reducing sliding friction between the weatherstrip and a panel is disclosed. A body of the weatherstrip has a relatively low durometer and the bearing layer has a greater durometer, wherein an exposed surface of the bearing layer is covered with a coating, wherein the coating can include a multitude of particles.
    Type: Application
    Filed: February 15, 2001
    Publication date: August 15, 2002
    Inventor: Krishnamachari Gopalan
  • Patent number: 6428649
    Abstract: A laminate having a metal reinforcement and a bonding veneer is disclosed, wherein the bonding veneer is a peroxide cured rubber including at least one of a polybutadiene and (meth)acrylate. A feature layer is formed on the bonding veneer and can be any of a variety of cross-linkable materials such as EPDM and EPM.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: August 6, 2002
    Assignee: Schlegel Corporation
    Inventor: Krishnamachari Gopalan
  • Publication number: 20020102386
    Abstract: A weatherseal for reducing noise generation upon relative movement between the seal and a panel is disclosed. The weatherseal includes a plurality of particles forming a surface of a contact layer, wherein the plurality of particles has a multi-modal particle size distribution.
    Type: Application
    Filed: March 10, 2000
    Publication date: August 1, 2002
    Inventors: Krishnamachari Gopalan, A. John Rigby