Patents by Inventor Douglas C. Heiderman

Douglas C. Heiderman 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: 12018800
    Abstract: This invention relates to a method and system for improved gas delivery for regulating gas at a substantially constant delivery pressure on a consistent basis. The system includes an automated redundant pressure regulation safety feature that is specifically configured along a flow network to significantly reduce the occurrence of pressure surges due to failure of the gas to be regulated to the delivery pressure. By reducing the occurrence of pressure surges and utilizing higher pressure package gas sources, the frequency of changeouts can be lowered.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: June 25, 2024
    Assignee: Praxair Technology, Inc.
    Inventors: Douglas C. Heiderman, Stanley M. Smith, William R. Gerristead
  • Publication number: 20240124776
    Abstract: Novel high purity dimethylaluminium chloride compositions are provided that are suitable for semiconductor applications, such as atomic layer etch and aluminum ion implantation. The reduction or minimization of specified gaseous impurities allows the vapor phase of the DMAC to have purity levels of 99.9 mol % or higher to selectively etch various atomic layers with high selectivity and high etch precision at acceptable etch rates and 99 mol % or higher to ion implant aluminum ions without substantial implantation of C2H3 ions into a wafer device, thereby avoiding degradation or failure of the wafer device. Storage conditions are established that are conducive to maintaining the high purity levels required for such semiconductor applications.
    Type: Application
    Filed: June 13, 2023
    Publication date: April 18, 2024
    Inventors: Laurence E. Spurgeon, Ashwini K. Sinha, Douglas C. Heiderman, Stanley M. Smith, Oleg Byl
  • Publication number: 20230313951
    Abstract: This invention relates to a method and system for improved gas delivery for regulating gas at a substantially constant delivery pressure on a consistent basis. The system includes an automated redundant pressure regulation safety feature that is specifically configured along a flow network to significantly reduce the occurrence of pressure surges due to failure of the gas to be regulated to the delivery pressure. By reducing the occurrence of pressure surges and utilizing higher pressure package gas sources, the frequency of changeouts can be lowered.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 5, 2023
    Inventors: Douglas C. Heiderman, Stanley M. Smith, William R. Gerristead
  • Patent number: 11577217
    Abstract: A carbon adsorbent storage and dispensing system is provided with a structurally modified particulate carbon adsorbent designed with optimal volumetric surface area for a certain range of particle sizes. Bulk density and specific surface area are carefully balanced to ensure the volumetric surface area remains within an optimal range to create high performance, as measured by dispensing capacity of the dopant fluid that is reversibly adsorbed onto the structurally modified particulate carbon adsorbent.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 14, 2023
    Assignee: Praxair Technology, Inc.
    Inventors: Neil A. Stephenson, Douglas C. Heiderman, Ashwini K. Sinha, Rachael A. Masin, Garrett R. Swindlehurst, Cynthia A. Hoover, William S. Kane
  • Patent number: 11098402
    Abstract: A novel method, composition and storage and delivery container for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow at a steady, sufficient and sustained flow rate into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture. The storage and delivery container is specifically designed to allow delivery of high purity, vapor phase antimony-containing dopant material at a steady, sufficient and sustained flow rate.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: August 24, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Aaron Reinicker, Ashwini K Sinha, Douglas C. Heiderman
  • Publication number: 20210178361
    Abstract: A carbon adsorbent storage and dispensing system is provided with a structurally modified particulate carbon adsorbent designed with optimal volumetric surface area for a certain range of particle sizes. Bulk density and specific surface area are carefully balanced to ensure the volumetric surface area remains within an optimal range to create high performance, as measured by dispensing capacity of the dopant fluid that is reversibly adsorbed onto the structurally modified particulate carbon adsorbent.
    Type: Application
    Filed: December 12, 2019
    Publication date: June 17, 2021
    Inventors: Neil A. Stephenson, Douglas C. Heiderman, Ashwini K. Sinha, Rachael A. Masin, Garrett R. Swindlehurst, Cynthia A. Hoover, William S. Kane
  • Publication number: 20200340098
    Abstract: A novel method, composition and storage and delivery container for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow at a steady, sufficient and sustained flow rate into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture. The storage and delivery container is specifically designed to allow delivery of high purity, vapor phase antimony-containing dopant material at a steady, sufficient and sustained flow rate.
    Type: Application
    Filed: May 11, 2020
    Publication date: October 29, 2020
    Inventors: Aaron Reinicker, Ashwini K Sinha, Douglas C. Heiderman
  • Patent number: 10711343
    Abstract: A novel method, composition and storage and delivery container for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow at a steady, sufficient and sustained flow rate into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture. The storage and delivery container is specifically designed to allow delivery of high purity, vapor phase antimony-containing dopant material at a steady, sufficient and sustained flow rate.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 14, 2020
    Assignee: Praxair Technology, Inc.
    Inventors: Aaron Reinicker, Ashwini K Sinha, Douglas C Heiderman
  • Patent number: 10597773
    Abstract: A novel method, composition and system for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 24, 2020
    Assignee: Praxair Technology, Inc.
    Inventors: Aaron Reinicker, Ashwini K Sinha, Douglas C Heiderman
  • Patent number: 10564656
    Abstract: A novel and improved inventive valve with a regulating function is provided that is capable of filling to higher fill pressures than previously attainable with conventional C-10 “on-off” valves. The valve contains a single flow passageway by which gas dispenses and enters the valve. A fill adapter is specially configured to engage the valve to allow filling at the higher pressures along the single flow passageway. The structure of the valve allows greater utilization of cylinder capacity; simplifies filling and dispensing with the single flow passageway; and allows for regulating gas pressure during delivery without increasing the overall size of the cylinder package.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 18, 2020
    Assignees: Praxair Technology, Inc., Sherwood Valve, LLC
    Inventors: Douglas C Heiderman, Ashwini K Sinha, Michael McBearty, John Piscitelli
  • Publication number: 20190185988
    Abstract: A novel method, composition and storage and delivery container for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow at a steady, sufficient and sustained flow rate into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture. The storage and delivery container is specifically designed to allow delivery of high purity, vapor phase antimony-containing dopant material at a steady, sufficient and sustained flow rate.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Inventors: Aaron Reinicker, Ashwini K. Sinha, Douglas C. Heiderman
  • Publication number: 20190062901
    Abstract: A novel method, composition and system for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture.
    Type: Application
    Filed: August 21, 2018
    Publication date: February 28, 2019
    Inventors: Aaron Reinicker, Ashwini K Sinha, Douglas C Heiderman
  • Patent number: 10090133
    Abstract: A novel composition, system and method for improving beam current during boron ion implantation are provided. In a preferred aspect, the boron ion implant process involves utilizing B2H6, 11BF3 and H2 at specific ranges of concentrations. The B2H6 is selected to have an ionization cross-section higher than that of the BF3 at an operating arc voltage of an ion source utilized during generation and implantation of active hydrogen ions species. The hydrogen allows higher levels of B2H6 to be introduced into the BF3 without reduction in F ion scavenging. The active boron ions produce an improved beam current characterized by maintaining or increasing the beam current level without incurring degradation of the ion source when compared to a beam current generated from conventional boron precursor materials.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: October 2, 2018
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Ashwini K Sinha, Stanley M Smith, Douglas C Heiderman, Serge M Campeau
  • Publication number: 20180163875
    Abstract: A modified vacuum actuated valve assembly and sealing mechanism is provided for improved sub-atmospheric flow stability characterized by the absence of delivery pressure spikes and flow excursions. The valve assembly includes a non-stationary thermoplastic seat and a stabber. The stabber is characterized by a top portion having a circular periphery designed to mechanically engage and disengage with an inner sealing surface of the thermoplastic seat. The sealing surface is coined to eliminate surface irregularities contained therein, thereby producing a relatively smooth coined mating inner sealing surface for the circular top portion of the stabber. The valve assembly also includes a modified bellows capable of fine tuning the delivery pressure of the valve assembly.
    Type: Application
    Filed: January 24, 2018
    Publication date: June 14, 2018
    Inventors: Douglas C. Heiderman, Ashwini K. Sinha, Paul Crvelin, Andrew Vassallo
  • Patent number: 9909670
    Abstract: A modified vacuum actuated valve assembly and sealing mechanism is provided for improved sub-atmospheric flow stability characterized by the absence of delivery pressure spikes and flow excursions. The valve assembly includes a non-stationary thermoplastic seat and a stabber. The stabber is characterized by a top portion having a circular periphery designed to mechanically engage and disengage with an inner sealing surface of the thermoplastic seat. The sealing surface is coined to eliminate surface irregularities contained therein, thereby producing a relatively smooth coined mating inner sealing surface for the circular top portion of the stabber. The valve assembly also includes a modified bellows capable of fine tuning the delivery pressure of the valve assembly.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: March 6, 2018
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Douglas C. Heiderman, Ashwini K. Sinha, Paul Crvelin, Andrew Vassallo
  • Patent number: 9570271
    Abstract: A novel composition, system and method thereof for improving beam current during boron ion implantation are provided. The boron ion implant process involves utilizing B2H6, BF3 and H2 at specific ranges of concentrations. The B2H6 is selected to have an ionization cross-section higher than that of the BF3 at an operating arc voltage of an ion source utilized during generation and implantation of active hydrogen ions species. The hydrogen allows higher levels of B2H6 to be introduced into the BF3 without reduction in F ion scavenging. The active boron ions produce an improved beam current characterized by maintaining or increasing the beam current level without incurring degradation of the ion source when compared to a beam current generated from conventional boron precursor materials.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: February 14, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Ashwini K. Sinha, Stanley M. Smith, Douglas C. Heiderman, Serge M. Campeau
  • Publication number: 20170032967
    Abstract: A supply source for delivery of a CO-containing dopant gas composition is provided. The composition includes a controlled amount of a diluent gas mixture such as xenon and hydrogen, which are each provided at controlled volumetric ratios to ensure optimal carbon ion implantation performance. The composition can be packaged as a dopant gas kit consisting of a CO-containing supply source and a diluent mixture supply source. Alternatively, the composition can be pre-mixed and introduced from a single source that can be actuated in response to a sub-atmospheric condition achieved along the discharge flow path to allow a controlled flow of the dopant mixture from the interior volume of the device into an ion source apparatus.
    Type: Application
    Filed: October 14, 2016
    Publication date: February 2, 2017
    Inventors: Ashwini K. Sinha, Douglas C. Heiderman, Lloyd A. Brown, Serge M. Campeau, Robert Shih, Dragon Lu, Wen-Pin Chiu, Chien-Kang Kao
  • Publication number: 20170032941
    Abstract: A novel composition, system and method for improving beam current during boron ion implantation are provided. In a preferred aspect, the boron ion implant process involves utilizing B2H6, 11BF3 and H2 at specific ranges of concentrations. The B2H6 is selected to have an ionization cross-section higher than that of the BF3 at an operating arc voltage of an ion source utilized during generation and implantation of active hydrogen ions species. The hydrogen allows higher levels of B2H6 to be introduced into the BF3 without reduction in F ion scavenging. The active boron ions produce an improved beam current characterized by maintaining or increasing the beam current level without incurring degradation of the ion source when compared to a beam current generated from conventional boron precursor materials.
    Type: Application
    Filed: October 14, 2016
    Publication date: February 2, 2017
    Inventors: Ashwini K. Sinha, Stanley M. Smith, Douglas C. Heiderman, Serge M. Campeau
  • Patent number: 9552990
    Abstract: A supply source for delivery of a CO-containing dopant gas composition is provided. The composition includes a controlled amount of a diluent gas mixture such as xenon and hydrogen, which are each provided at controlled volumetric ratios to ensure optimal carbon ion implantation performance. The composition can be packaged as a dopant gas kit consisting of a CO-containing supply source and a diluent mixture supply source. Alternatively, the composition can be pre-mixed and introduced from a single source that can be actuated in response to a sub-atmospheric condition achieved along the discharge flow path to allow a controlled flow of the dopant mixture from the interior volume of the device into an ion source apparatus.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: January 24, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Ashwini K. Sinha, Douglas C. Heiderman, Lloyd A. Brown, Serge M. Campeau, Robert Shih, Dragon Lu, Wen-Pin Chiu, Chien-Kang Kao
  • Patent number: 9548181
    Abstract: A novel composition, system and method for improving beam current during boron ion implantation are provided. In a preferred aspect, the boron ion implant process involves utilizing B2H6, 11BF3 and H2 at specific ranges of concentrations. The B2H6 is selected to have an ionization cross-section higher than that of the BF3 at an operating arc voltage of an ion source utilized during generation and implantation of active hydrogen ions species. The hydrogen allows higher levels of B2H6 to be introduced into the BF3 without reduction in F ion scavenging. The active boron ions produce an improved beam current characterized by maintaining or increasing the beam current level without incurring degradation of the ion source when compared to a beam current generated from conventional boron precursor materials.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: January 17, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Ashwini K. Sinha, Stanley M. Smith, Douglas C. Heiderman, Serge M. Campeau