Patents by Inventor James J. Petroski

James J. Petroski 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).

  • Polishing pad for use in chemical-mechanical planarization of semiconductor wafers and method of making same
    Patent number: 6863774
    Abstract: A polishing pad for use in chemical mechanical polishing of substrates that being made of fibrous matrix such as cellulose with a binder consisting of thermoset resin material, such as phenolic resin. The polishing surface is ground to form asperities. The polishing pad provides a porous structure by which polishing slurry and polishing debris during chemical mechanical polishing of substrates are stored for subsequent rinsing away, and for enhanced flow-distribution of the polishing slurry. Also disclosed is a method of making the polishing pad.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: March 8, 2005
    Assignee: Raytech Innovative Solutions, Inc.
    Inventors: Richard D. Cooper, Paul Fathauer, Angela Mroczek-Petroski, David Perry, James J. Petroski
  • Continuous yarn laid wet friction material
    Patent number: 6830798
    Abstract: A friction disk suitable for running as an assembly of interleaved disks in a transmission is disclosed. A rigid metallic core on backing plate is covered on one or both sides with a wafer of non-woven yarn wherein the yarn comprises a continuous wound length of heat resistant yarn in a non-overlapping fashion. The yarn is bonded to the core by a thermosetting resin, which is impregnated into the yarn by less than 80% by weight to preserve porosity and allowing penetration of the cooling transmission fluid. The yarn preferably is composed of carbon fibers or filaments.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: December 14, 2004
    Assignee: Raytech Composites, Inc.
    Inventors: Laurie S. Bowles, Samuel A. Truncone, James J. Petroski
  • Continuous yarn laid wet friction material
    Publication number: 20030012940
    Abstract: A friction disk suitable for running as an assembly of interleaved disks in a transmission is disclosed. A rigid metallic core on backing plate is covered on one or both sides with a wafer of non-woven yarn wherein the yarn comprises a continuous wound length of heat resistant yarn in a non-overlapping fashion. The yarn is bonded to the core by a thermosetting resin, which is impregnated into the yarn by less than 80% by weight to preserve porosity and allowing penetration of the cooling transmission fluid. The yarn preferably is composed of carbon fibers or filaments.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 16, 2003
    Inventors: Laurie S. Bowles, Samuel A. Truncone, James J. Petroski
  • Polygonal friction disk and method
    Patent number: 5454454
    Abstract: A conventional circular friction disk having a metal backing plate and outer layer of friction material is replaced by a disk having a plurality of straight outer side edges joined by curved edges, in order to effect material savings in the manufacturing process, and without significant loss in performance.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: October 3, 1995
    Assignee: Raybestos Products Co.
    Inventors: John J. Easton, James P. Macey, James J. Petroski