Patents by Inventor Richard Ulrich Assion

Richard Ulrich Assion 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: 10453744
    Abstract: The disclosure relates to a method of making molybdenum films utilizing boron and molybdenum nucleation layers. The resulting molybdenum films have low electrical resistivity, are substantially free of boron, and can be made at reduced temperatures compared to conventional chemical vapor deposition processes that do not use the boron or molybdenum nucleation layers. The molybdenum nucleation layer formed by this process can protect the substrate from the etching effect of MoCl5 or MoOCl4, facilitates nucleation of subsequent CVD Mo growth on top of the molybdenum nucleation layer, and enables Mo CVD deposition at lower temperatures. The nucleation layer can also be used to control the grain sizes of the subsequent CVD Mo growth, and therefore controls the electrical resistivity of the Mo film.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 22, 2019
    Assignee: ENTEGRIS, INC.
    Inventors: Shuang Meng, Richard Ulrich Assion, Thomas H. Baum, Bryan Clark Hendrix
  • Publication number: 20180261503
    Abstract: The disclosure relates to a method of making molybdenum films utilizing boron and molybdenum nucleation layers. The resulting molybdenum films have low electrical resistivity, are substantially free of boron, and can be made at reduced temperatures compared to conventional chemical vapor deposition processes that do not use the boron or molybdenum nucleation layers. The molybdenum nucleation layer formed by this process can protect the substrate from the etching effect of MoCl5 or MoOCl4, facilitates nucleation of subsequent CVD Mo growth on top of the molybdenum nucleation layer, and enables Mo CVD deposition at lower temperatures. The nucleation layer can also be used to control the grain sizes of the subsequent CVD Mo growth, and therefore controls the electrical resistivity of the Mo film.
    Type: Application
    Filed: April 20, 2018
    Publication date: September 13, 2018
    Inventors: Shuang Meng, Richard Ulrich Assion, Thomas H. Baum, Bryan Clark Hendrix
  • Publication number: 20180142345
    Abstract: The disclosure relates to a method of making molybdenum films utilizing boron and molybdenum nucleation layers. The resulting molybdenum films have low electrical resistivity, are substantially free of boron, and can be made at reduced temperatures compared to conventional chemical vapor deposition processes that do not use the boron or molybdenum nucleation layers. The molybdenum nucleation layer formed by this process can protect the substrate from the etching effect of MoCl5 or MoOCl4, facilitates nucleation of subsequent CVD Mo growth on top of the molybdenum nucleation layer, and enables Mo CVD deposition at lower temperatures. The nucleation layer can also be used to control the grain sizes of the subsequent CVD Mo growth, and therefore controls the electrical resistivity of the Mo film.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 24, 2018
    Inventors: Shuang Meng, Richard Ulrich Assion, Thomas H. Baum, Bryan Clark Hendrix