Patents by Inventor Charles E. Wickersham

Charles E. Wickersham 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: 8785232
    Abstract: A method to improve CdTe-based photovoltaic device efficiency is disclosed. The CdTe-based photovoltaic device can include oxygen or silicon in semiconductor layers.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: July 22, 2014
    Assignee: First Solar, Inc.
    Inventors: Gang Xiong, Rick C. Powell, Aaron Roggelin, Kuntal Kumar, Arnold Allenic, Kenneth M. Ring, Charles E. Wickersham
  • Publication number: 20130298992
    Abstract: A method to improve CdTe-based photovoltaic device efficiency is disclosed. The CdTe-based photovoltaic device can include oxygen or silicon in semiconductor layers.
    Type: Application
    Filed: July 18, 2013
    Publication date: November 14, 2013
    Applicant: First Solar, Inc.
    Inventors: Gang Xiong, Rick C. Powell, Aaron Roggelin, Kuntal Kumar, Arnold Allenic, Kenneth M. Ring, Charles E. Wickersham
  • Patent number: 8500928
    Abstract: A method of making sputter targets using rotary axial forging is described. Other thermomechanical working steps can be used prior to and/or after the forging step. Sputter targets are further described which can have unique grain size and/or crystal structures.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: August 6, 2013
    Assignee: Global Advanced Metals, USA, Inc.
    Inventors: John P. Matera, Robert B. Ford, Charles E. Wickersham, Jr.
  • Publication number: 20120297855
    Abstract: A method of making sputter targets using rotary axial forging is described. Other thermomechanical working steps can be used prior to and/or after the forging step. Sputter targets are further described which can have unique grain size and/or crystal structures.
    Type: Application
    Filed: July 18, 2012
    Publication date: November 29, 2012
    Applicant: GLOBAL ADVANCED METALS, USA, INC.
    Inventors: John P. Matera, Robert B. Ford, Charles E. Wickersham, JR.
  • Patent number: 8252126
    Abstract: A method of making sputter targets using rotary axial forging is described. Other thermomechanical working steps can be used prior to and/or after the forging step. Sputter targets are further described which can have unique grain size and/or crystal structures.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: August 28, 2012
    Assignee: Global Advanced Metals, USA, Inc.
    Inventors: John P. Matera, Robert B. Ford, Charles E. Wickersham, Jr.
  • Patent number: 8231745
    Abstract: A process is described for processing metal which includes clock rolling a metal plate until the desired thickness is achieved to form a rolled plate. Sputtering targets and other metal articles are further described.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: July 31, 2012
    Assignee: Global Advanced Metals, USA, Inc.
    Inventors: Charles E. Wickersham, Jr., Vladimir Levit, P. Todd Alexander
  • Publication number: 20120048748
    Abstract: Air quality in a workplace can be monitored to ensure worker safety.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Inventors: Charles E. Wickersham, JR., Gerhard Meyer
  • Publication number: 20110297536
    Abstract: A process is described for processing metal which includes clock rolling a metal plate until the desired thickness is achieved to form a rolled plate. Sputtering targets and other metal articles are further described.
    Type: Application
    Filed: June 27, 2011
    Publication date: December 8, 2011
    Applicant: CABOT CORPORATION
    Inventors: Charles E. Wickersham, JR., Vladimir Levit, P. Todd Alexander
  • Patent number: 7998287
    Abstract: A process is described for processing metal which includes clock rolling a metal plate until the desired thickness is achieved to form a rolled plate. Sputtering targets and other metal articles are further described.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: August 16, 2011
    Assignee: Cabot Corporation
    Inventors: Charles E. Wickersham, Jr., Vladimir Levit, P. Todd Alexander
  • Publication number: 20110147579
    Abstract: A method for monitoring a quantity of a particle in a sample of air may include heating a particle to form a vapor; detecting the particle; measuring a change in quantity of the particle; and indicating the change in quantity.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 23, 2011
    Applicant: First Solar, Inc.
    Inventor: Charles E. Wickersham, JR.
  • Patent number: 7712514
    Abstract: Methods for reducing inclusion content of sputter targets and targets so produced are disclosed. Inclusions may be reduced by adding a small amount of Si to the molten Al or molten Al alloy followed by filtering of the molten metals through a filter medium. Targets having substantially no inclusions therein of greater than about 400 ?m are especially useful in the sputtering of large flat panel displays and result, upon sputtering, in a reduction in the amount of macroparticles sputtered onto the substrate.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: May 11, 2010
    Assignee: Tosoh SMD, Inc.
    Inventors: Charles E. Wickersham, Jr., John E. Poole, Alexander Leybovich, Lin Zhu
  • Patent number: 7561937
    Abstract: A system and method are provided for manufacturing workpieces, such as metal articles like sputtering target, the system comprising: comparing one or more physical or chemical values of a respective one of a plurality of metal target blanks to one or more comparable values of at least one desired criterion; selecting one of the metal target blanks from a plurality of metal target blanks as a work-in-progress; assigning a serial route for the work-in-progress; processing the work-in-progress by translating the work-in-progress from note to node with an automated transport, after completion of the events at each node; rejecting or accepting the work-in-progress as a metal target by evaluating a result of at least one event of the one or more respective events to be completed at, at least one of the plurality of nodes.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: July 14, 2009
    Assignee: Tosoh SMD, Inc.
    Inventors: Wiley Zane Reed, Bobby R. Cosper, Kenneth G. Schmidt, Neil D. Bultz, Charles E. Wickersham, John P. Matera
  • Publication number: 20090150095
    Abstract: A method for non-destructively detecting the presence of banded regions in a metal is described. The method involves sending an ultrasonic wave into the metal and obtaining reflected signals. The reflected signals are compared with each other to determine variations in signal intensity. A banded region within the metal can be observed as a weaker reflected signal than a reflected backwall signal, thus accurately identifying a location of banding within the metal. Metal articles with a low percent of banding are also described.
    Type: Application
    Filed: February 17, 2009
    Publication date: June 11, 2009
    Applicant: Cabot Corporation
    Inventor: Charles E. Wickersham, JR.
  • Publication number: 20090078391
    Abstract: Methods for reducing inclusion content of sputter targets and targets so produced are disclosed. Inclusions may be reduced by adding a small amount of Si to the molten Al or molten Al alloy followed by filtering of the molten metals through a filter medium. Targets having substantially no inclusions therein of greater than about 400 ?m are especially useful in the sputtering of large flat panel displays and result, upon sputtering, in a reduction in the amount of macroparticles sputtered onto the substrate.
    Type: Application
    Filed: December 1, 2008
    Publication date: March 26, 2009
    Applicant: Tosoh SMD, Inc.
    Inventors: Charles E. Wickersham, JR., John E. Poole, Alexander Leybovich, Lin Zhu
  • Patent number: 7480976
    Abstract: A fixture and method is provided for gripping an article, such as a sputtering target. The fixture comprises a base, a first set of contact rollers, and a second set of contact rollers, wherein at least one of the first set and the second set are adjustably positioned relative to the other of the first set and the second set on the base. The contact rollers can be configured as v-grooved wheels that will only touch chamfered portions of an outer diameter of the sputtering target when the contact rollers are clamped against the sputtering target. At least one of the first set and the second set of contact rollers can be pivotally mounted on a slide, with the slide being adjustably positioned on the base of the fixture.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: January 27, 2009
    Assignee: Tosoh SMD Etna, LLC
    Inventors: Wiley Zane Reed, Bobby R. Cosper, Kenneth G. Schmidt, Neil D. Bultz, Charles E. Wickersham, John P. Matera
  • Patent number: 7467741
    Abstract: A method of forming a sputtering target assembly and the sputtering target assembly made therefrom are described. The method includes bonding a sputtering target to a backing plate at a low temperature. Also described is a method of forming a sputtering target assembly such that a gap is formed between the sputtering target and the backing plate. Also described is a method of forming a sputtering target assembly providing a mechanism to prevent unintended sputtering into the backing plate.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: December 23, 2008
    Assignee: Cabot Corporation
    Inventors: Charles E. Wickersham, Jr., David P. Workman
  • Publication number: 20080271305
    Abstract: A system and method are provided for manufacturing a sputtering target. The system is preferably automated. Sub systems of the manufacturing system include a robotic part handling sub system, a weighing sub system adapted to measure the weight of a part to be manufactured into a sputtering target, and a machining sub system adapted to finish machine a part to be manufactured into a sputtering target. The system can further include a cleaning sub system adapted to clean a part to be manufactured into a sputtering target, an inspection sub system adapted to measure dimensions of a part to be manufactured into a sputtering target, and a feedback control sub system adapted to provide control signals to one or more of the robotic handling sub system, the weighing sub system, the cleaning sub system, and the inspection sub system to control processing performed by one or more of the sub systems.
    Type: Application
    Filed: January 18, 2006
    Publication date: November 6, 2008
    Applicant: Tosoh SMD ETNA, LLC
    Inventors: Wiley Zane Reed, Bobby R. Cosper, Kenneth G. Schmidt, Neil D. Bultz, Charles E. Wickersham, John P. Matera
  • Patent number: 7425093
    Abstract: A method and apparatus for thermographically evaluating the bond integrity of a sputtering target assembly is described. The method includes applying a heating or cooling medium or energy to one surface of the assembly and acquiring a graphic recording of a corresponding temperature change on the opposing surface of the assembly using an imaging device. Also described is a method of mathematically analyzing the pixel data recorded in each frame to produce an integrated normalized temperature map that represents the bond integrity of the assembly.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: September 16, 2008
    Assignee: Cabot Corporation
    Inventors: Charles E. Wickersham, Jr., Zhiguo Zhang, Larry Edwin Ellison, Mikhail Y. Kachalov, John D. White, III
  • Publication number: 20080221721
    Abstract: A system and method are provided for manufacturing workpieces, such as metal articles like sputtering target, the system comprising: comparing one or more physical or chemical values of a respective one of a plurality of metal target blanks to one or more comparable values of at least one desired criterion; selecting one of the metal target blanks from a plurality of metal target blanks as a work-in-progress; assigning a serial route for the work-in-progress; processing the work-in-progress by translating the work-in-progress from note to node with an automated transport, after completion of the events at each node; rejecting or accepting the work-in-progress as a metal target by evaluating a result of at least one event of the one or more respective events to be completed at, at least one of the plurality of nodes.
    Type: Application
    Filed: January 18, 2006
    Publication date: September 11, 2008
    Applicant: Tosoh SMD ETNA, LLC
    Inventors: Wiley Zane Reed, Bobby R. Cosper, Kenneth G. Schmidt, Neil D. Bultz, Charles E. Wickersham, John P. Matera
  • Publication number: 20080110011
    Abstract: A fixture and method is provided for gripping an article, such as a sputtering target. The fixture comprises a base, a first set of contact rollers, and a second set of contact rollers, wherein at least one of the first set and the second set are adjustably positioned relative to the other of the first set and the second set on the base. The contact rollers can be configured as v-grooved wheels that will only touch chamfered portions of an outer diameter of the sputtering target when the contact rollers are clamped against the sputtering target. At least one of the first set and the second set of contact rollers can be pivotally mounted on a slide, with the slide being adjustably positioned on the base of the fixture.
    Type: Application
    Filed: January 18, 2006
    Publication date: May 15, 2008
    Inventors: Wiley Zane Reed, Bobby R. Cosper, Kenneth G. Schmidt, Neil D. Bultz, Charles E. Wickersham, John P. Matera