Patents by Inventor Sumant Kamboj

Sumant Kamboj 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).

  • Homogeneous fixed abrasive polishing pad
    Patent number: 6702866
    Abstract: A homogeneous fixed abrasive polishing article, or pad, including a matrix of a cured resin coated soft filler material having at least one working surface and an abrasive uniformly distributed throughout the filler material. A method for manufacturing the polishing pad includes the steps of mixing a binder, solvent and filler material together; drying the resin coated filler material; grinding the resin coated filler material; sieving the resin coated filler material; mixing an abrasive material with the resin coated filler material; sieving the abrasive material and the resin coated filler material thereby creating a powder material; transferring the powder material to a mold to form a working surface for the polishing pad; compressing the powder material; and curing the powder material. Alternatively, the abrasive may be mixed with the binder, solvent and filler material in the first step instead of later in the process.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: March 9, 2004
    Assignee: SpeedFam-IPEC Corporation
    Inventor: Sumant Kamboj
  • Homogeneous fixed abrasive polishing pad
    Publication number: 20030126801
    Abstract: A homogeneous fixed abrasive polishing article, or pad, including a matrix of a cured resin coated soft filler material having at least one working surface and an abrasive uniformly distributed throughout the filler material. A method for manufacturing the polishing pad includes the steps of mixing a binder, solvent and filler material together; drying the resin coated filler material; grinding the resin coated filler material; sieving the resin coated filler material; mixing an abrasive material with the resin coated filler material; sieving the abrasive material and the resin coated filler material thereby creating a powder material; transferring the powder material to a mold to form a working surface for the polishing pad; compressing the powder material; and curing the powder material. Alternatively, the abrasive may be mixed with the binder, solvent and filler material in the first step instead of later in the process.
    Type: Application
    Filed: July 11, 2002
    Publication date: July 10, 2003
    Inventor: Sumant Kamboj