Patents by Inventor David B. James

David B. James 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).

  • Patent number: 6210254
    Abstract: An innovative method of manufacturing polishing pads using photo-curing polymers and photolithography. The photolithography enables the creation of useful surface patterns not possible with conventional machining techniques and enables the use of pad materials otherwise too soft to pattern by conventional machining techniques.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: April 3, 2001
    Assignee: Rodel Holdings Inc.
    Inventors: Lee Melbourne Cook, David B. James, Nina G. Chechik, William D. Budinger
  • Patent number: 6171181
    Abstract: A polishing pad is formed as a one-piece article having a region which is transparent and an adjacent region which is opaque. The article is formed by solidifying a flowable polymeric material which at least initially has a uniform composition. The flowable polymeric material is processed during a molding operation to provide the transparent region and the adjacent opaque region. Types of polymeric material suitable for making the polishing pad include a single thermoplastic material, a blend of thermoplastic materials, and a reactive thermosetting polymer.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: January 9, 2001
    Assignee: Rodel Holdings, Inc.
    Inventors: John V. H. Roberts, Barry Scott Pinheiro, David B. James
  • Patent number: 6106754
    Abstract: A polishing pad having a substantially uniform, continuously interconnected porous surface. The pad can be produced by pressure sintering powder compacts of thermoplastic polymer at a temperature above the glass transition temperature but not exceeding the melting point of the polymer. The sintering process is conducted in a mold at a pressure in excess of 100 psi (0.07 MPa). In a preferred version, a mixture of two polymer powders is used, where one polymer has a lower melting point than the other.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: August 22, 2000
    Assignee: Rodel Holdings, Inc.
    Inventors: Lee Melbourne Cook, David B. James, Charles William Jenkins, Heinz F. Reinhardt, John V. H. Roberts, Raj Raghav Pillai
  • Patent number: 6099394
    Abstract: A chemical-mechanical polishing system which is particularly well suited for use in the manufacture of semiconductor devices or the like. The invention is directed to a self-dressing, polishing pad comprising a high modulus phase and a low modulus phase. The multi-phase polishing pads are very efficient and effective in providing high performance polishing along an entire polishing surface interface.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: August 8, 2000
    Assignee: Rodel Holdings, Inc.
    Inventors: David B. James, William D. Budinger, John V. H. Roberts, Michael R. Oliver, Nina G. Chechik, Richard M. Levering, Jr.
  • Patent number: 6069080
    Abstract: A fixed abrasive, chemical-mechanical polishing system which is particularly well suited for use in the manufacture of semiconductor devices, memory disks or the like.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: May 30, 2000
    Assignee: Rodel Holdings, Inc.
    Inventors: David B. James, William D. Budinger, John V. H. Roberts, Michael R. Oliver, Nina G. Chechik, Richard M. Levering, Jr., Heinz F. Reinhardt
  • Patent number: 6036579
    Abstract: An innovative method of manufacturing polishing pads using photocuring polymers and photolithography. The photolithography enables the creation of useful surface patterns not possible with conventional machining techniques and enables the use of pad materials otherwise too soft to pattern by conventional machining techniques.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: March 14, 2000
    Assignee: Rodel Inc.
    Inventors: Lee Melbourne Cook, David B. James, Nina G. Chechik, William D. Budinger
  • Patent number: 6030899
    Abstract: An apparatus and method for polishing the surface of a semiconductor wafer is provided in which the polishing pad has on its surface a multiplicity of nanoasperities which contact the wafer surface in combination with a reactive liquid solution free from particulate matter.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: February 29, 2000
    Assignee: Rodel, Inc.
    Inventors: Lee Melbourne Cook, David B. James, William D. Budinger
  • Patent number: 6022264
    Abstract: A chemical-mechanical polishing system which is particularly well suited for use in the manufacture of semiconductor devices or the like. The invention is directed to a self-dressing, hydrophilic polishing pad capable of releasing particles during polishing. Such a pad design is very efficient in providing polishing particles over the entire polishing surface interface. Since the polishing pad produces polishing particles, the polishing fluid can comprise very low loadings of polishing particles, if any.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: February 8, 2000
    Assignee: Rodel Inc.
    Inventors: Lee Melbourne Cook, David B. James, William D. Budinger
  • Patent number: 6022268
    Abstract: This invention describes improved polishing pads useful in the manufacture of semiconductor devices or the like. The pads of the present invention have an advantageous hydrophilic polishing material and have an innovative surface topography and texture which generally improves predictability and polishing performance.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: February 8, 2000
    Assignee: Rodel Holdings Inc.
    Inventors: John V. H. Roberts, David B. James, Lee Melbourne Cook
  • Patent number: 6019666
    Abstract: This invention provides polishing pad tiles which, by virtue of their geometry and surface features, can be arranged to form mosaic pads having channels at the seams which facilitate the flow of polishing fluid during polishing of a workpiece.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: February 1, 2000
    Assignee: Rodel Holdings Inc.
    Inventors: John V. H. Roberts, Lee Melbourne Cook, David B. James, Heinz F. Reinhardt
  • Patent number: 6017265
    Abstract: Polymer-based pads useful for polishing objects, particularly integrated circuits, having interconnected porosity which is uniform in all directions, and where the solid portion of said pad consists of a uniform continuously interconnected polymer material of greater than 50% of the gross volume of the article, are produced directly to final shape and dimension by pressure sintering powder compacts of thermoplastic polymer at a temperature above the glass transition temperature but not exceeding the melting point of the polymer and at a pressure in excess of 100 psi in a mold having the desired final pad dimensions. In a preferred version, a mixture of two polymer powders is used, where one polymer has a lower melting point than the other. When pressure sintered at a temperature not to exceed the melting point of the lower melting powder, the increased stiffness afforded by incorporation of the higher melting polymer component gives improved mechanical strength to the sintered product.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: January 25, 2000
    Assignee: Rodel, Inc.
    Inventors: Lee Melbourne Cook, David B. James, Charles William Jenkins, Heinz F. Reinhardt, John V. H. Roberts, Raj Raghav Pillai
  • Patent number: 5966723
    Abstract: A method and apparatus for storing a value in a non-volatile memory device is disclosed. The non-volatile memory device includes a plurality of address pins for concurrently receiving the respective bits of an address value while the non-volatile memory device is in a parallel interface mode. In response to one or more signals, the non-volatile memory device is transitioned to a serial interface mode to enable a serial input. A sequence of bits is received in the non-volatile memory device via the serial input. The first portion of the sequence of bits represents a store command and a second portion of the sequence of bits represents a data value. The data value represented by the second portion of the sequence of bits is then stored in the non-volatile memory device in response to the store command represented by the first portion of the sequence of bits.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: October 12, 1999
    Assignee: Intel Corporation
    Inventors: David B. James, Peter T. Larsen
  • Patent number: 5932486
    Abstract: An apparatus and method for polishing the surface of a semiconductor wafer is provided in which the polishing pad has on its surface a multiplicity of nanoasperities which contact the wafer surface in combination with a reactive liquid solution essentially free from particulate matter.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: August 3, 1999
    Assignee: Rodel, Inc.
    Inventors: Lee Melbourne Cook, David B. James, William D. Budinger
  • Patent number: 5768289
    Abstract: A method and apparatus for dynamically configuring the number of boundary-scan cells in a boundary-scan path is disclosed. A plurality of control signals is asserted to a plurality of boundary-scan cells in a boundary-scan path. Each control signal of the plurality of control signals is in a first state or a second state. For each control signal that is in a first state, a respective one of the plurality of boundary-scan cells is bypassed in the boundary-scan path.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: June 16, 1998
    Assignee: Intel Corporation
    Inventor: David B. James
  • Patent number: 5358825
    Abstract: The adhesion of epoxy-resin containing resist compositions to a copper surface, which resist compositions are exposed to actinic radiation, developed and hardened, is enhanced by contacting the copper surface with an N-heterocyclic compound comprising --NH.sub.2 groups and drying the copper surface comprising the N-heterocyclic compound prior to application of the resist. Printed wiring boards produced by a partially additive process can be produced using this adhesion enhancement technique.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: October 25, 1994
    Assignee: AMP-Akzo Corporation
    Inventor: David B. James
  • Patent number: 4281072
    Abstract: A polymeric material which comprises an amorphous solid solution formed between a metallic compound and a polymer by virtue of ether, thioether or urethane linkages contained therein, the metal of the metallic compound being selected from the group consisting of Be, Mg, Sr, Ba, Sc, Y, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Al, La and the other lanthanides.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: July 28, 1981
    Assignee: National Research Dev'p Corp.
    Inventors: Raymond E. Wetton, David B. James
  • Patent number: 4200701
    Abstract: A polymeric material which comprises an amorphous solid solution formed between a metallic compound and a polymer by virtue of ether, thioether or urethane linkages contained therein, the metal of the metallic compound being selected from the group consisting of Be, Mg, Sr, Ba, Sc, Y, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Al, La and the other lanthanides.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: April 29, 1980
    Assignee: National Research Development Corporation
    Inventors: Raymond E. Wetton, David B. James
  • Patent number: 4185830
    Abstract: A puzzle game apparatus and method of playing the game are disclosed wherein a base is provided with a plurality of rows of letters and punctuation symbols at fixed locations in the rows. A plurality of template outlines of various planar shapes and sizes are located in fixed positions among the letters and punctuation symbols in the rows. A plurality of movable elements corresponding in shape and size to various ones of the template outlines and adapted to be superimposed in registry thereon are provided. Each movable element has a letter display area which is identical in size and shape with the letter display areas of the other elements and which displays therein a letter.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: January 29, 1980
    Inventor: David B. James