Patents by Inventor Wilhelm P. Platow

Wilhelm P. Platow 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: 20180172635
    Abstract: The present disclosure is directed to methods and devices for moisture-based calibration. In particular, the present disclosure is directed to moisture monitoring devices that trigger calibration of substance detection devices.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Inventors: Hanh T. Lai, Wilhelm P. Platow
  • Publication number: 20180172650
    Abstract: The present disclosure is directed to adsorption devices for use in substance detection systems and methods of using same. In particular, the present disclosure is directed to adsorption devices that allow for both the optional refilling of adsorption material and the optional regeneration of a dryer.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Inventors: Wilhelm P. Platow, Hanh T. Lai, Evan V. Lane, Bradley D. Shaw
  • Patent number: 9789434
    Abstract: The present disclosure is directed to methods and systems for detecting a substance in a sample gas. The methods and systems include separating the substance of interest in the sample gas, and introducing the separated sample gas into a detector. The systems and methods further include performing an analysis of the substance of interest.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: October 17, 2017
    Assignee: Morpho Detection, LLC
    Inventors: Hanh T. Lai, Vibha Mishra, Wilhelm P. Platow
  • Publication number: 20170274316
    Abstract: The present disclosure is directed to methods and systems for detecting a substance in a sample gas. The methods and systems include separating the substance of interest in the sample gas, and introducing the separated sample gas into a detector. The systems and methods further include performing an analysis of the substance of interest.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 28, 2017
    Inventors: Hanh T. Lai, Vibha Mishra, Wilhelm P. Platow
  • Patent number: 9530615
    Abstract: A system and method of improving the performance and extending the lifetime of an ion source is disclosed. The ion source includes an ion source chamber, a suppression electrode and a ground electrode. In the processing mode, the ion source chamber may be biased to a first positive voltage, while the suppression electrode is biased to a negative voltage to attract positive ions from within the chamber through an aperture and toward the workpiece. In the cleaning mode, the ion source chamber may be grounded, while the suppression electrode is biased using a power supply having a high current capability. The voltage applied to the suppression electrode creates a plasma between the suppression electrode and the ion source chamber, and between the suppression electrode and the ground electrode.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: December 27, 2016
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Peter F. Kurunczi, Neil J. Bassom, Wilhelm P. Platow
  • Patent number: 9431247
    Abstract: A method for an ion implantation is provided. First, a non-parallel ion beam is provided. Thereafter, a relative motion between a workpiece and the non-parallel ion beam, so as to enable each region of the workpiece to be implanted by different portions of the non-parallel ion beam successively. Particularly, when at least one three-dimensional structure is located on the upper surface of the workpiece, both the top surface and the side surface of the three-dimensional structure may be implanted properly by the non-parallel ion beam when the workpiece is moved across the non-parallel ion beam one and only one times. Herein, the non-parallel ion beam can be a divergent ion beam or a convergent ion beam (both may be viewed as the integrated divergent beam), also can be generated directly from an ion source or is modified from a parallel ion beam, a divergent ion beam or a convergent ion beam.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: August 30, 2016
    Assignee: ADVANCED ION BEAM TECHNOLOGY, INC.
    Inventors: Zhimin Wan, Kourosh Saadatmand, Wilhelm P. Platow, Ger-Pin Lin, Ching-I Li, Rekha Padmanabhan, Gary N. Cai
  • Publication number: 20160133469
    Abstract: A method for an ion implantation is provided. First, a non-parallel ion beam is provided. Thereafter, a relative motion between a workpiece and the non-parallel ion beam, so as to enable each region of the workpiece to be implanted by different portions of the non-parallel ion beam successively. Particularly, when at least one three-dimensional structure is located on the upper surface of the workpiece, both the top surface and the side surface of the three-dimensional structure may be implanted properly by the non-parallel ion beam when the workpiece is moved across the non-parallel ion beam one and only one times. Herein, the non-parallel ion beam can be a divergent ion beam or a convergent ion beam (both may be viewed as the integrated divergent beam), also can be generated directly from an ion source or is modified from a parallel ion beam, a divergent ion beam or a convergent ion beam.
    Type: Application
    Filed: June 26, 2015
    Publication date: May 12, 2016
    Inventors: Zhimin WAN, Kourosh SAADATMAND, Wilhelm P. PLATOW, Ger-Pin LIN, Ching-I LI, Rekha PADMANABHA, Gary N. CAI
  • Patent number: 9269528
    Abstract: A method of setting up a medium current ribbon beam for ion implantation is provided. It includes providing an ion source fed with a process gas and a support gas. The process ion beam is separated from the support gas beam with a mass analyzing magnet, and the intensity of the process ion beam is controlled by varying the ratio of process gas to support gas in the ion source gas feed. Process beam intensity may also be controlled with one or more mechanical current limiting devices located downstream of the ion source. An ion beam system is also provided. This method may control the total ribbon beam intensity at the target between approximately 3 uA to about 3 mA.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: February 23, 2016
    Assignee: ADAVANCED ION BEAM TECHNOLOGY, INC.
    Inventors: Robert Kaim, Charles M. Free, David Hoglund, Wilhelm P. Platow, Kourosh Saadatmand
  • Patent number: 9142379
    Abstract: An ion source and method of cleaning are disclosed. One or more heating units are placed in close proximity to the inner volume of the ion source, so as to affect the temperature within the ion source. In one embodiment, one or more walls of the ion source have recesses into which heating units are inserted. In another embodiment, one or more walls of the ion source are constructed of a conducting circuit and an insulating layer. By utilizing heating units near the ion source, it is possible to develop new methods of cleaning the ion source. Cleaning gas is flowed into the ion source, where it is ionized, either by the cathode, as in normal operating mode, or by the heat generated by the heating units. The cleaning gas is able to remove residue from the walls of the ion source more effectively due to the elevated temperature.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 22, 2015
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Bon-Woong Koo, Christopher R. Campbell, Craig R. Chaney, Robert C. Lindberg, Wilhelm P. Platow, Alexander S. Perel
  • Publication number: 20150102233
    Abstract: A method of setting up a medium current ribbon beam for ion implantation is provided. It includes providing an ion source fed with a process gas and a support gas. The process ion beam is separated from the support gas beam with a mass analyzing magnet, and the intensity of the process ion beam is controlled by varying the ratio of process gas to support gas in the ion source gas feed. Process beam intensity may also be controlled with one or more mechanical current limiting devices located downstream of the ion source. An ion beam system is also provided. This method may control the total ribbon beam intensity at the target between approximately 3 uA to about 3 mA.
    Type: Application
    Filed: September 18, 2014
    Publication date: April 16, 2015
    Inventors: Robert KAIM, Charles M. FREE, David HOGLUND, Wilhelm P. PLATOW, Kourosh SAADATMAND
  • Patent number: 8912976
    Abstract: Disclosed is a radio frequency (RF) antenna for plasma ion sources. The RF antenna includes a low-resistance metal tube having an inner and outer diameter. A low friction polymer tube also having an inner and outer diameter surrounds the low-resistance metal tube. The inner diameter of the polymer tube is slightly larger than the outer diameter of the low-resistance metal tube. A pre-formed quartz glass tube encases the low friction polymer tube and low-resistance metal tube. The quartz glass tube is pre-formed in a desired shape. A guide wire is attached inside one end of the low-resistance hollow metal tube. The flexible low friction polymer tube containing the low-resistance metal tubed may then be threaded through the quartz glass tube.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: December 16, 2014
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Wilhelm P. Platow, Craig R. Chaney
  • Publication number: 20140319369
    Abstract: An ion source and method of cleaning are disclosed. One or more heating units are placed in close proximity to the inner volume of the ion source, so as to affect the temperature within the ion source. In one embodiment, one or more walls of the ion source have recesses into which heating units are inserted. In another embodiment, one or more walls of the ion source are constructed of a conducting circuit and an insulating layer. By utilizing heating units near the ion source, it is possible to develop new methods of cleaning the ion source. Cleaning gas is flowed into the ion source, where it is ionized, either by the cathode, as in normal operating mode, or by the heat generated by the heating units. The cleaning gas is able to remove residue from the walls of the ion source more effectively due to the elevated temperature.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: Bon-Woong Koo, Christopher R. Campbell, Craig R. Chaney, Robert C. Lindberg, Wilhelm P. Platow, Alexander S. Perel
  • Patent number: 8809800
    Abstract: An ion source and method of cleaning are disclosed. One or more heating units are placed in close proximity to the inner volume of the ion source, so as to affect the temperature within the ion source. In one embodiment, one or more walls of the ion source have recesses into which heating units are inserted. In another embodiment, one or more walls of the ion source are constructed of a conducting circuit and an insulating layer. By utilizing heating units near the ion source, it is possible to develop new methods of cleaning the ion source. Cleaning gas is flowed into the ion source, where it is ionized, either by the cathode, as in normal operating mode, or by the heat generated by the heating units. The cleaning gas is able to remove residue from the walls of the ion source more effectively due to the elevated temperature.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: August 19, 2014
    Assignee: Varian Semicoductor Equipment Associates, Inc.
    Inventors: Bon-Woong Koo, Christopher R. Campbell, Craig R. Chaney, Robert Lindberg, Wilhelm P. Platow, Alexander S. Perel
  • Publication number: 20140070697
    Abstract: Disclosed is a radio frequency (RF) antenna for plasma ion sources. The RF antenna includes a low-resistance metal tube having an inner and outer diameter. A low friction polymer tube also having an inner and outer diameter surrounds the low-resistance metal tube. The inner diameter of the polymer tube is slightly larger than the outer diameter of the low-resistance metal tube. A pre-formed quartz glass tube encases the low friction polymer tube and low-resistance metal tube. The quartz glass tube is pre-formed in a desired shape. A guide wire is attached inside one end of the low-resistance hollow metal tube. The flexible low friction polymer tube containing the low-resistance metal tubed may then be threaded through the quartz glass tube.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Wilhelm P. Platow, Craig R. Chaney
  • Patent number: 8263944
    Abstract: In an ion implanter, an inert gas is directed at a cathode assembly near an ion source chamber via a supply tube. The inert gas is provided with a localized directional flow toward the cathode assembly to reduce unwanted concentrations of cleaning or dopant gases introduced into the ion source chamber, thereby reducing the effects of unwanted filament growth in the cathode assembly and extending the manufacturing life of the ion source.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 11, 2012
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: John Bon-Woong Koo, David J. Twiss, Chris Campbell, Frank Sinclair, Alexander S. Perel, Craig R. Chaney, Wilhelm P. Platow, Eric R. Cobb
  • Patent number: 8003956
    Abstract: An ion implantation system for neutralizing the space charge effect associated with a high current low energy ion beam. The implantation system includes an ion source configured to receive a dopant gas and generate ions having a particular energy and mass from which ions are extracted through an aperture. A work piece positioned downstream of the ion source for receiving the extracted ions in the form of an ion beam. A bleed gas channel disposed between the ion source and the work piece. The bleed gas channel supplying a gas used to neutralize the space charge effect associated with the ion beam.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 23, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: D. Jeffrey Lischer, John (Bon-Woong) Koo, Peter F. Kurunczi, Shardul Patel, Wilhelm P. Platow
  • Patent number: 8003959
    Abstract: In an ion implanter, a Faraday cup is utilized to receive an ion beam generated during ion source cleaning. The detected beam has an associated mass spectrum which indicates when the ion source cleaning process is complete. The mass spectrum results in a signal composed of a cleaning agent and the material comprising the ion source. This signal will rise over time as the ion source chamber is being cleaned and will level-off and remain constant once the deposits are etched away from the source chamber, thereby utilizing existing implant tools to determine endpoint detection during ion source cleaning.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: August 23, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Wilhelm P. Platow, Neil J. Bassom, Peter F. Kurunczi, Alexander S. Perel, Craig R. Chaney
  • Publication number: 20110143527
    Abstract: Herein an improved technique for generating uniform ion beam is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for processing a substrate with an ion implanter comprising an ion source. The method may comprise: introducing dopant into an ion source chamber of the ion source, the dopant may comprise molecules containing boron and hydrogen; introducing diluent into the ion source chamber, the diluent containing halogen; ionizing the dopant and the diluent into molecular ions and halogen containing ions, the molecular ions containing boron and hydrogen; extracting the molecular ions and the halogen containing ions from the ions source chamber; and directing the molecular ions toward the substrate, where the halogen containing ions may improve uniformity of the molecular ions extracted from the ion source and extend the lifetime of the ion source.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 16, 2011
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Wilhelm P. PLATOW, Neil J. Bassom, Peter F. Kurunczi, Alexander S. Perel, Craig R. Chaney
  • Patent number: 7888662
    Abstract: In a cleaning process for an ion source chamber, an electrode positioned outside of the ion source chamber includes a suppression plug. When the cleaning gas is introduced intothe source chamber, the suppression plug may engage an extraction aperture of the source chamber to adjust the gas pressure within the chamber to enhance chamber cleaning via. plasma-enhanced chemical reaction. The gas conductance between the source chamber aperture and the suppression plug can be adjusted during the cleaning process to provide optimum cleaning conditions and to exhaust unwanted deposits.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: February 15, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Costel Biloiu, Craig R. Chaney, Eric R. Cobb, Bon-Woong Koo, Wilhelm P. Platow
  • Publication number: 20100327159
    Abstract: In an ion implanter, a Faraday cup is utilized to receive an ion beam generated during ion source cleaning. The detected beam has an associated mass spectrum which indicates when the ion source cleaning process is complete. The mass spectrum results in a signal composed of a cleaning agent and the material comprising the ion source. This signal will rise over time as the ion source chamber is being cleaned and will level-off and remain constant once the deposits are etched away from the source chamber, thereby utilizing existing implant tools to determine endpoint detection during ion source cleaning.
    Type: Application
    Filed: June 26, 2009
    Publication date: December 30, 2010
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Wilhelm P. Platow, Neil J. Bassom, Peter F. Kurunczi, Alexander S. Perel, Craig R. Chaney