Patents Assigned to Johnson Matthey Electronics Inc.
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Patent number: 6489380Abstract: Compositions having high moisture resistance and flexibility comprise an organic component and a filler. The organic component comprises a long-chain cycloaliphatic epoxy resin, a short-chain cycloaliphatic epoxy resin, a cyanate ester, and a Lewis acid catalyst. Preferably the organic component further comprises a Bronsted acid co-catalyst and/or a flexibilizing modifier. The compositions are useful in various semiconductor applications, including as die attach adhesives, underfills, encapsulants, via fills, prepreg binders, polymer solder masks and polymer bumps on flip chip or BGA assemblies.Type: GrantFiled: April 27, 2000Date of Patent: December 3, 2002Assignee: Johnson Matthey Electronics, Inc.Inventors: Xiao-Qi Zhou, Henry Wevick, Nancy E. Iwamoto, Shao Wei Li, Alan Grieve
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Patent number: 6312621Abstract: A via fill formulation including electrically and/or thermally conductive particulate filler, or non-conductive, electrically conductive polymer and a resin vehicle.Type: GrantFiled: November 12, 1999Date of Patent: November 6, 2001Assignee: Johnson Matthey Electronics, Inc.Inventors: Jesse L. Pedigo, Nancy E. Iwamoto, Alan Grieve, Xiao-Qi Zhou
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Patent number: 6302977Abstract: Described is a titanium sputtering target to provide improved step coverage and a method of making same.Type: GrantFiled: August 2, 1999Date of Patent: October 16, 2001Assignee: Johnson Matthey Electronics, Inc.Inventor: Yinshi Liu
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Patent number: 6242513Abstract: Compositions having high moisture resistance and flexibility comprise an organic component and a filler. The organic component comprises a long-chain cycloaliphatic epoxy resin, a short-chain cycloaliphatic epoxy resin, a cyanate ester, and a Lewis acid catalyst. Preferably the organic component further comprises a Bronsted acid co-catalyst and/or a flexibilizing modifier. The compositions are useful in various semiconductor applications, including as die attach adhesives, underfills, encapsulants, via fills, prepreg binders, polymer solder masks and polymer bumps on flip chip or BGA assemblies.Type: GrantFiled: October 12, 1999Date of Patent: June 5, 2001Assignee: Johnson Matthey Electronics, Inc.Inventors: Xiao-Qi Zhou, Henry Wevick, Nancy E. Iwamoto, Shao Wei Li, Alan Grieve
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Patent number: 6238596Abstract: Described is a compliant and crosslinkable thermal interface material of at least one malenized rubber with maleic anhydride adducted to the molecule and at least one hydroxyl terminated olefin rubbers, and a method of making and using same; as well as a method of improving thermal conductivity of polymer systems.Type: GrantFiled: September 17, 1999Date of Patent: May 29, 2001Assignee: Johnson Matthey Electronics, Inc.Inventors: My N. Nguyen, James D. Grundy
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Patent number: 6238494Abstract: Described is a polycrystalline, metallic sputtering target with a minimum of statically crystallized grain size difference in grain size at any location of less than about ±3%, as well as a dispersion in orientation content ratio of textures of less than about ±4% at any location.Type: GrantFiled: September 29, 1999Date of Patent: May 29, 2001Assignee: Johnson Matthey Electronics Inc.Inventor: Vladimir Segal
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Patent number: 6113761Abstract: Described is a sputtering target assembly of high purity copper diffusion bonded to a precipitation hardened aluminum alloy backing plate via an intermediate layer of a CuCr alloy and in which the copper contains a micro alloy addition of at least one of Ag, Su, Te, In, Mg, B, Bi, Sb and/or P. Also disclosed is a method that includes preparation of a master alloy for addition to high purity copper and fabricating, heat treating and diffusion bonding processes to produce a sputtering target assembly with a stable fine-grained target microstructure.Type: GrantFiled: June 2, 1999Date of Patent: September 5, 2000Assignee: Johnson Matthey Electronics, Inc.Inventors: Janine K. Kardokus, Chi tse Wu, Christopher L. Parfeniuk, Jane E. Buehler
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Patent number: 6022630Abstract: A materials system in which exchange coupling is achievable has the potential for allowing direct overwriting of data and comprises at least two multilayer films of platinum and cobalt with independently controlled coercivity and Curie temperatures.Type: GrantFiled: September 30, 1997Date of Patent: February 8, 2000Assignee: Johnson Matthey Electronics, Inc.Inventors: Joseph Miller, Derek P A Pearson, Philip G. Pitcher
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Patent number: 5993621Abstract: Described is a titanium sputtering target to provide improved step coverage and a method of making same.Type: GrantFiled: July 11, 1997Date of Patent: November 30, 1999Assignee: Johnson Matthey Electronics, Inc.Inventor: Yinshi Liu
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Patent number: 5809393Abstract: A sputtering target comprising a body of metal such as aluminum and its alloy with an ultrafine grain size and small second phase. Also described is a method for making an ultra-fine grain sputtering target comprising melting, atomizing, and depositing atomized metal to form a workpiece, and fabricating the workpiece to form a sputtering target. A method is also disclosed that includes the steps of extruding a workpiece through a die having contiguous, transverse inlet and outlet channels of substantially identical cross section, and fabricating the extruded article into a sputtering target. The extrusion may be performed several times, producing grain size of still smaller size and controlled grain texture.Type: GrantFiled: October 30, 1995Date of Patent: September 15, 1998Assignee: Johnson Matthey Electronics, Inc.Inventors: John Alden Dunlop, Jun Yuan, Janine Kiyabu Kardokus, Roger Alan Emigh
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Patent number: 5803342Abstract: Described is a method of making high purity copper sputtering target. The method avoids melting and casting and involves stacking segments of high purity copper plates, and heating, forging and annealing to produce a diffusion bonded unitary structure.Type: GrantFiled: December 26, 1996Date of Patent: September 8, 1998Assignee: Johnson Matthey Electronics, Inc.Inventor: Janine K. Kardokus
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Patent number: 5780755Abstract: A sputtering target comprising a body of metal such as aluminum and its alloy with an ultrafine grain size and small second phase. Also described is a method for making an ultra-fine grain sputtering target comprising melting, atomizing, and depositing atomized metal to form a workpiece, and fabricating the workpiece to form a sputtering target. A method is also disclosed that includes the steps of extruding a workpiece through a die having contiguous, transverse inlet and outlet channels of substantially identical cross section, and fabricating the extruded article into a sputtering target. The extrusion may be performed several times, producing grain size of still smaller size and controlled grain texture.Type: GrantFiled: October 30, 1995Date of Patent: July 14, 1998Assignee: Johnson Matthey Electronics, Inc.Inventors: John Alden Dunlop, Jun Yuan, Janine Kiyabu Kardokus, Roger Alan Emigh
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Patent number: 5687600Abstract: Described is a method of manufacturing a sputtering target or backing plate for a sputtering target that minimizes metal waste and reduces manufacturing steps. The target or backing plate is made from a substantially circular metal blank by progressively deforming circumferential bands until the blank is in the shape of a sputtering target or backing plate. The target and backing plate so produced are also described.Type: GrantFiled: August 1, 1996Date of Patent: November 18, 1997Assignee: Johnson Matthey Electronics, Inc.Inventors: Roger Alan Emigh, William Bryce Willett
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Patent number: 5639014Abstract: A method of making an integral solder and plated cover for an electronic package is described which involves applying a corrosion resistant material onto a metal strip and a solderable material on the corrosion resistant material. A solder material is then roll clad over the solderable material after which it is stamped to covers which are then coated with gold.Type: GrantFiled: July 5, 1995Date of Patent: June 17, 1997Assignee: Johnson Matthey Electronics, Inc.Inventors: David M. Damiano, Mark Fery, Terry J. Oldham
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Patent number: 5590389Abstract: A sputtering target comprising a body of metal such as aluminum and its alloy with an ultrafine grain size and small second phase. Also described is a method for making an ultra-fine grain sputtering target comprising melting, atomizing, and depositing atomized metal to form a workpiece, and fabricating the workpiece to form a sputtering target. A method is also disclosed that includes the steps of extruding a workpiece through a die having contiguous, transverse inlet and outlet channels of substantially identical cross section, and fabricating the extruded article into a sputtering target. The extrusion may be performed several times, producing grain size of still smaller size and controlled grain texture.Type: GrantFiled: December 23, 1994Date of Patent: December 31, 1996Assignee: Johnson Matthey Electronics, Inc.Inventors: John A. Dunlop, Jun Yuan, Janine K. Kardokus, Roger A. Emigh
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Patent number: 5532513Abstract: A lightweight composite lid for a package containing a semiconductor device formed of a porous ceramic body filled with a material having a thermal conductivity greater than air.Type: GrantFiled: July 8, 1994Date of Patent: July 2, 1996Assignee: Johnson Matthey Electronics, Inc.Inventors: Charles Smith, Masyood Akhtar, Michael M. Chau, David Savage
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Patent number: 5513834Abstract: Described is in situ refining high purity elements in Groups IIA and VIB of the Periodic Table in a hermetically sealed apparatus by distilling, condensing and zone refining material within the apparatus.Type: GrantFiled: November 14, 1994Date of Patent: May 7, 1996Assignee: Johnson Matthey Electronics, Inc.Inventors: Gerald B. Feldewerth, Alan B. I. Bollong, David C. Bunnell