Patents by Inventor David A. Chan

David A. Chan 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: 9478950
    Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety disconnect system includes an enclosure operative to receive a plurality of input power lines into the enclosure and provide a plurality of output power lines out of the enclosure. Each input power line is coupled to and paired with a corresponding one of the output power lines, where each input power line and output power line is operative to provide power from a power source. A plurality of switches are provided in the enclosure, each of these switches coupled between an associated one of the pairs of input power line and output power line, and each switch operative to disconnect the associated input power line from the corresponding output power line.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 25, 2016
    Assignee: Bentek Corporation
    Inventors: James Peplinski, David A. Chan, Mitchell Schoch
  • Publication number: 20140313640
    Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety disconnect system includes an enclosure operative to receive a plurality of input power lines into the enclosure and provide a plurality of output power lines out of the enclosure. Each input power line is coupled to and paired with a corresponding one of the output power lines, where each input power line and output power line is operative to provide power from a power source. A plurality of switches are provided in the enclosure, each of these switches coupled between an associated one of the pairs of input power line and output power line, and each switch operative to disconnect the associated input power line from the corresponding output power line.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 23, 2014
    Applicant: Bentek Corporation
    Inventors: James PEPLINSKI, David A. CHAN, Mitchell SCHOCH
  • Patent number: 8687348
    Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety disconnect system includes an enclosure operative to receive a plurality of input power lines into the enclosure and provide a plurality of output power lines out of the enclosure. Each input power line is coupled to and paired with a corresponding one of the output power lines, where each input power line and output power line is operative to provide power from a power source. A plurality of switches are provided in the enclosure, each of these switches coupled between an associated one of the pairs of input power line and output power line, and each switch operative to disconnect the associated input power line from the corresponding output power line.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: April 1, 2014
    Assignee: Bentek Corporation
    Inventors: Jim Peplinski, David A. Chan, Mitchell Schoch
  • Patent number: 8460057
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: June 11, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Publication number: 20130050906
    Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety disconnect system includes an enclosure operative to receive a plurality of input power lines into the enclosure and provide a plurality of output power lines out of the enclosure. Each input power line is coupled to and paired with a corresponding one of the output power lines, where each input power line and output power line is operative to provide power from a power source. A plurality of switches are provided in the enclosure, each of these switches coupled between an associated one of the pairs of input power line and output power line, and each switch operative to disconnect the associated input power line from the corresponding output power line.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Inventors: Jim Peplinski, David A. Chan, Mitchell Schoch
  • Publication number: 20110195528
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Application
    Filed: April 18, 2011
    Publication date: August 11, 2011
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Patent number: 7927182
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: April 19, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Publication number: 20100062684
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Application
    Filed: September 4, 2009
    Publication date: March 11, 2010
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Patent number: 7585202
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: September 8, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Publication number: 20080268643
    Abstract: A CMP station can be closed loop controlled by using data obtained by an inline metrology station from a first polished wafer to affect the processing of subsequent polished wafers. The first wafer is polished and measured by the inline metrology station. The metrology station measures at various points the array dielectric thickness, field dielectric thickness, barrier residue thickness and metal residue thickness. The data is then inputted into an algorithm and polishing parameter outputs are calculated. The outputs are sent to the CMP station and used to supplement or replace the previous polishing parameters. Subsequent wafers are polished on the CMP station using the revised polishing parameters.
    Type: Application
    Filed: July 15, 2008
    Publication date: October 30, 2008
    Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
  • Patent number: 7400934
    Abstract: A CMP station can be closed loop controlled by using data obtained by an inline metrology station from a first polished wafer to affect the processing of subsequent polished wafers. The first wafer is polished and measured by the inline metrology station. The metrology station measures at various points the array dielectric thickness, field dielectric thickness, barrier residue thickness and metal residue thickness. The data is then inputted into an algorithm and polishing parameter outputs are calculated. The outputs are sent to the CMP station and used to supplement or replace the previous polishing parameters. Subsequent wafers are polished on the CMP station using the revised polishing parameters.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 15, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
  • Patent number: 7294039
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: November 13, 2007
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Patent number: 7101251
    Abstract: A computer program product for process control in chemical mechanical polishing is described. The product includes instructions to cause a processor to receive a measurement of an initial pre-polishing thickness of a layer of a substrate from a metrology station, determine a value for a parameter of an endpoint algorithm from the initial thickness of the substrate, receive a monitoring signal generated from monitoring in-situ polishing of the substrate, process the monitoring signal to detect a signal feature indicating a final or intermediate endpoint and send instructions to stop polishing when an endpoint criterion is detected using the endpoint algorithm with the determined value for the parameter.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: September 5, 2006
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Patent number: 7008875
    Abstract: A CMP station can be closed loop controlled by using data obtained by an inline metrology station from a first polished wafer to affect the processing of subsequent polished wafers. The first wafer is polished and measured by the inline metrology station. The metrology station measures at various points the array dielectric thickness, field dielectric thickness, barrier residue thickness and metal residue thickness. The data is then inputted into an algorithm and polishing parameter outputs are calculated. The outputs are sent to the CMP station and used to supplement or replace the previous polishing parameters. Subsequent wafers are polished on the CMP station using the revised polishing parameters.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: March 7, 2006
    Assignee: Applied Materials Inc.
    Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
  • Patent number: 6939198
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: September 6, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Publication number: 20040166685
    Abstract: A CMP station can be closed loop controlled by using data obtained by an inline metrology station from a first polished wafer to affect the processing of subsequent polished wafers. The first wafer is polished and measured by the inline metrology station. The metrology station measures at various points the array dielectric thickness, field dielectric thickness, barrier residue thickness and metal residue thickness. The data is then inputted into an algorithm and polishing parameter outputs are calculated. The outputs are sent to the CMP station and used to supplement or replace the previous polishing parameters. Subsequent wafers are polished on the CMP station using the revised polishing parameters.
    Type: Application
    Filed: November 24, 2003
    Publication date: August 26, 2004
    Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
  • Patent number: 6632124
    Abstract: An optical monitoring system for a two-step polishing process which generates a reflectance trace for each of plurality of radial zones. The CMP apparatus may switch from a high-selectivity slurry to a low-selectivity slurry when any of the reflectance traces indicate initial clearance of the metal layer, and polishing may halt when all of the reflectance traces indicate that oxide layer has been completely exposed.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: October 14, 2003
    Assignee: Applied Materials Inc.
    Inventors: Bret W. Adams, Boguslaw A. Swedek, Rajeev Bajaj, Savitha Nanjangud, Andreas Norbert Wiswesser, Stan D. Tsai, David A. Chan, Fred C. Redeker, Manoocher Birang
  • Publication number: 20030104760
    Abstract: An optical monitoring system for a two-step polishing process which generates a reflectance trace for each of plurality of radial zones. The CMP apparatus may switch from a high-selectivity slurry to a low-selectivity slurry when any of the reflectance traces indicate initial clearance of the metal layer, and polishing may halt when all of the reflectance traces indicate that oxide layer has been completely exposed.
    Type: Application
    Filed: January 10, 2003
    Publication date: June 5, 2003
    Applicant: Applied Materials, Inc. a Delaware corporation
    Inventors: Bret W. Adams, Boguslaw A. Swedek, Rajeev Bajaj, Savitha Nanjangud, Andreas Norbert Wiswesser, Stan D. Tsai, David A. Chan, Fred C. Redeker, Manoocher Birang
  • Patent number: 6506097
    Abstract: An optical monitoring system for a two-step polishing process which generates a reflectance trace for each of plurality of radial zones. The CMP apparatus may switch from a high-selectivity slurry to a low-selectivity slurry when any of the reflectance traces indicate initial clearance of the metal layer, and polishing may halt when all of the reflectance traces indicate that oxide layer has been completely exposed.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: January 14, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Bret W. Adams, Boguslaw A. Swedek, Rajeev Bajaj, Savitha Nanjangud, Andreas Norbert Wiswesser, Stan D. Tsai, David A. Chan, Fred C. Redeker, Manoocher Birang
  • Publication number: 20030003845
    Abstract: An optical monitoring system for a two-step polishing process which generates a reflectance trace for each of plurality of radial zones. The CMP apparatus may switch from a high-selectivity slurry to a low-selectivity slurry when any of the reflectance traces indicate initial clearance of the metal layer, and polishing may halt when all of the reflectance traces indicate that oxide layer has been completely exposed.
    Type: Application
    Filed: January 16, 2001
    Publication date: January 2, 2003
    Inventors: Bret W. Adams, Boguslaw A. Swedek, Rajeev Bajaj, Savitha Nanjangud, Andreas Norbert Wiswesser, Stan D. Tsai, David A. Chan, Fred C. Redeker, Manoocher Birang