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).
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Patent number: 9478950Abstract: 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: GrantFiled: March 27, 2014Date of Patent: October 25, 2016Assignee: Bentek CorporationInventors: James Peplinski, David A. Chan, Mitchell Schoch
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Publication number: 20140313640Abstract: 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: ApplicationFiled: March 27, 2014Publication date: October 23, 2014Applicant: Bentek CorporationInventors: James PEPLINSKI, David A. CHAN, Mitchell SCHOCH
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Patent number: 8687348Abstract: 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: GrantFiled: August 31, 2011Date of Patent: April 1, 2014Assignee: Bentek CorporationInventors: Jim Peplinski, David A. Chan, Mitchell Schoch
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Patent number: 8460057Abstract: 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: GrantFiled: April 18, 2011Date of Patent: June 11, 2013Assignee: Applied Materials, Inc.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Publication number: 20130050906Abstract: 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: ApplicationFiled: August 31, 2011Publication date: February 28, 2013Inventors: Jim Peplinski, David A. Chan, Mitchell Schoch
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Publication number: 20110195528Abstract: 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: ApplicationFiled: April 18, 2011Publication date: August 11, 2011Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Patent number: 7927182Abstract: 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: GrantFiled: September 4, 2009Date of Patent: April 19, 2011Assignee: Applied Materials, Inc.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Publication number: 20100062684Abstract: 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: ApplicationFiled: September 4, 2009Publication date: March 11, 2010Applicant: APPLIED MATERIALS, INC.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Patent number: 7585202Abstract: 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: GrantFiled: October 24, 2007Date of Patent: September 8, 2009Assignee: Applied Materials, Inc.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Publication number: 20080268643Abstract: 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: ApplicationFiled: July 15, 2008Publication date: October 30, 2008Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
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Patent number: 7400934Abstract: 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: GrantFiled: March 6, 2006Date of Patent: July 15, 2008Assignee: Applied Materials, Inc.Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
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Patent number: 7294039Abstract: 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: GrantFiled: August 24, 2006Date of Patent: November 13, 2007Assignee: Applied Materials, Inc.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Patent number: 7101251Abstract: 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: GrantFiled: June 23, 2005Date of Patent: September 5, 2006Assignee: Applied Materials, Inc.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Patent number: 7008875Abstract: 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: GrantFiled: November 24, 2003Date of Patent: March 7, 2006Assignee: Applied Materials Inc.Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
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Patent number: 6939198Abstract: 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: GrantFiled: December 27, 2002Date of Patent: September 6, 2005Assignee: Applied Materials, Inc.Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
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Publication number: 20040166685Abstract: 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: ApplicationFiled: November 24, 2003Publication date: August 26, 2004Inventors: Manoocher Birang, Konstantin Y. Smekalin, David A. Chan
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Patent number: 6632124Abstract: 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: GrantFiled: January 10, 2003Date of Patent: October 14, 2003Assignee: 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
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Publication number: 20030104760Abstract: 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: ApplicationFiled: January 10, 2003Publication date: June 5, 2003Applicant: Applied Materials, Inc. a Delaware corporationInventors: Bret W. Adams, Boguslaw A. Swedek, Rajeev Bajaj, Savitha Nanjangud, Andreas Norbert Wiswesser, Stan D. Tsai, David A. Chan, Fred C. Redeker, Manoocher Birang
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Patent number: 6506097Abstract: 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: GrantFiled: January 16, 2001Date of Patent: January 14, 2003Assignee: 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
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Publication number: 20030003845Abstract: 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: ApplicationFiled: January 16, 2001Publication date: January 2, 2003Inventors: Bret W. Adams, Boguslaw A. Swedek, Rajeev Bajaj, Savitha Nanjangud, Andreas Norbert Wiswesser, Stan D. Tsai, David A. Chan, Fred C. Redeker, Manoocher Birang