Patents by Inventor Tony S. Kaushal

Tony S. Kaushal 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: 20020182131
    Abstract: A substrate processing apparatus has a process chamber with a substrate support, a gas supply to introduce a gas into the chamber, and a gas energizer to energize the gas in the processing of a substrate, thereby generating an effluent gas. A catalytic reactor has an effluent gas inlet to receive the effluent gas and an effluent gas outlet to exhaust treated effluent gas. A heater is adapted to heat the effluent gas in the catalytic reactor. The heated catalytic treatment of the effluent gas abates the hazardous gases in the effluent. An additive gas source and a prescrubber may also be used to further treat the effluent.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Tony S. Kaushal, Shamouil Shamouilian, Harshad Borgaonkar, Kwok Manus Wong, Michael G. Chafin, Ashish Bhatnagar
  • Patent number: 6490145
    Abstract: A ceramic substrate support and methods for fabricating the same are provided. In one embodiment, a ceramic substrate support for supporting a substrate includes a ceramic body and a porous member disposed therein. The ceramic body generally has an upper portion and a lower portion. The upper portion includes a support surface while the lower portion includes a bottom surface. At least one passage is disposed in the lower portion of the ceramic body. A first end of the passage is at least partially closed by the upper portion of the ceramic body. At least one outlet is disposed through the portion of the ceramic body through the upper portion of the ceramic body and fluidly couples the passage to the support surface.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: December 3, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Arnold V. Kholodenko, You Wang, Tony S. Kaushal, Semyon L. Kats
  • Patent number: 6468490
    Abstract: An effluent abatement system 200 that may be used to abate F2 gas content of effluent exhausted from a process chamber 35, such as effluent from a CVD chamber cleaning process includes a catalytic reactor 250 to reduce the content of F2 in the effluent 100. The system may further include a prescrubber 230 to add reactive gases to the effluent 100 and/or to treat the effluent 100 prior to treatment in the catalytic reactor 250. Alternatively reactive gases can be added to the effluent 100 by a gas source 220.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: October 22, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Shamouil Shamouilian, Mehran Moalem, Tony S. Kaushal
  • Patent number: 6391146
    Abstract: An apparatus and method for reducing hazardous gases exhausted from a process chamber 25 includes an effluent gas treatment system 200 with a gas energizing reactor 210 with an erosion resistant inner surface 280. Optionally, an additive gas source 230 may be provided to introduce additive gas into the gas energizing reactor 210. In one embodiment, the inner surface comprises a fluorine-containing compound. In another embodiment, the inner surface comprises an oxide and a stabilizing agent.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: May 21, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Ashish Bhatnagar, Kartik Ramaswamy, Tony S. Kaushal, Kwok Manus Wong, Shamouil Shamouilian
  • Patent number: 6367412
    Abstract: A plasma tube comprising a vacuum sealing ceramic outer tube, a porous ceramic insert disposed on the inside wall of the outer tube, and a source of high frequency radiation, for example, an RF coil wrapped around the tube, to excite gas flowing through the bore of the insert into a plasma. The invention is particularly useful as an exhaust scrubber for oxidizing exhaust gases from a semiconductor processing chamber. A catalyst may be embedded in the porous insert to promote the scrubbing reaction. The invention may also be used in an applicator of a remote plasma source.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 9, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Kartik Ramaswamy, Kwok Manus Wong, Ashish Bhatnagar, Mehran Moalem, Tony S. Kaushal, Shamouil Shamouilian
  • Patent number: 5137789
    Abstract: A composite ceramic and metal article having a thermal insulating component formed of single phase magnesium stabilized aluminum titanate and an in situ cast structural component formed of a high melting temperature metallic material. The composite article is particularly useful as exhaust port and manifold structures in internal combustion engines.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: August 11, 1992
    Assignee: Caterpillar Inc.
    Inventor: Tony S. Kaushal