Patents by Inventor Makfir SEFA

Makfir SEFA 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: 20250096010
    Abstract: The system includes a primary vacuum chamber and a secondary vacuum chamber connected to the primary vacuum chamber via a gate valve. The gate valve operates between an open position in which the secondary vacuum chamber is in fluid communication with the primary vacuum chamber and a closed position in which the secondary vacuum chamber is sealed from the primary vacuum chamber. A heat exchanger cools the secondary vacuum chamber to adsorb contaminants from the primary vacuum chamber into the secondary vacuum chamber when the gate valve is in the open position. A gas source injects a carrier gas into the secondary vacuum chamber when the gate valve is in the closed position. The heat exchanger also heats the carrier gas in the secondary vacuum chamber to desorb the contaminants into a gas sample with the carrier gas. A sample container collects the gas sample from the secondary vacuum chamber.
    Type: Application
    Filed: August 22, 2024
    Publication date: March 20, 2025
    Inventors: Santosh Kumar Sankar, Makfir Sefa
  • Patent number: 12249480
    Abstract: Apparatuses, systems, and methods for transferring fluid to a stage in a charged particle beam system are disclosed. In some embodiments, a stage may be configured to secure a wafer; a chamber may be configured to house the stage; and a tube may be provided within the chamber to transfer fluid between the stage and outside of the chamber. The tube may include a first tubular layer of first material, wherein the first material is a flexible polymer; and a second tubular layer of second material, wherein the second material is configured to reduce permeation of fluid or gas through the tube. In some embodiments, a system may include a degasser system outside of the chamber, where the degasser system may be configured to remove gases from the transfer fluid before the transfer fluid enters the tube.
    Type: Grant
    Filed: April 23, 2024
    Date of Patent: March 11, 2025
    Assignee: ASML Netherlands B.V.
    Inventors: Marcus Adrianus Van De Kerkhof, Jing Zhang, Martijn Petrus Christianus Van Heumen, Patriek Adrianus Alphonsus Maria Bruurs, Erheng Wang, Vineet Sharma, Makfir Sefa, Shao-Wei Fu, Simone Maria Scolari, Johannes Andreas Henricus Maria Jacobs
  • Publication number: 20240274400
    Abstract: Apparatuses, systems, and methods for transferring fluid to a stage in a charged particle beam system are disclosed. In some embodiments, a stage may be configured to secure a wafer; a chamber may be configured to house the stage; and a tube may be provided within the chamber to transfer fluid between the stage and outside of the chamber. The tube may include a first tubular layer of first material, wherein the first material is a flexible polymer; and a second tubular layer of second material, wherein the second material is configured to reduce permeation of fluid or gas through the tube. In some embodiments, a system may include a degasser system outside of the chamber, where the degasser system may be configured to remove gases from the transfer fluid before the transfer fluid enters the tube.
    Type: Application
    Filed: April 23, 2024
    Publication date: August 15, 2024
    Inventors: Marcus Adrianus VAN DE KERKHOF, Jing ZHANG, Martijn Petrus Christianus VAN HEUMEN, Patriek Adrianus Alphonsus Maria BRUURS, Erheng WANG, Vineet SHARMA, Makfir SEFA, Shao-Wei FU, Simone Maria SCOLARI, Johannes Andreas Henricus Maria JACOBS
  • Patent number: 11996262
    Abstract: Apparatuses, systems, and methods for transferring fluid to a stage in a charged particle beam system are disclosed. In some embodiments, a stage may be configured to secure a wafer, a chamber may be configured to house the stage; and a tube may be provided within the chamber to transfer fluid between the stage and outside of the chamber. The tube may include a first tubular layer of first material, wherein the first material is a flexible polymer; and a second tubular layer of second material, wherein the second material is configured to reduce permeation of fluid or gas through the tube. In some embodiments, a system may include a degasser system outside of the chamber, where the degasser system may be configured to remove gases from the transfer fluid before the transfer fluid enters the tube.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: May 28, 2024
    Assignee: ASML Netherlands B.V.
    Inventors: Marcus Adrianus Van De Kerkhof, Jing Zhang, Martijn Petrus Christianus Van Heumen, Patriek Adrianus Alphonsus Maria Bruurs, Erheng Wang, Vineet Sharma, Makfir Sefa, Shao-Wei Fu, Simone Maria Scolari, Johannes Andreas Henricus Maria Jacobs
  • Publication number: 20210257181
    Abstract: Apparatuses, systems, and methods for transferring fluid to a stage in a charged particle beam system are disclosed. In some embodiments, a stage may be configured to secure a wafer; a chamber may be configured to house the stage; and a tube may be provided within the chamber to transfer fluid between the stage and outside of the chamber. The tube may include a first tubular layer of first material, wherein the first material is a flexible polymer; and a second tubular layer of second material, wherein the second material is configured to reduce permeation of fluid or gas through the tube. In some embodiments, a system may include a degasser system outside of the chamber, where the degasser system may be configured to remove gases from the transfer fluid before the transfer fluid enters the tube.
    Type: Application
    Filed: February 18, 2021
    Publication date: August 19, 2021
    Inventors: Marcus Adrianus VAN DE KERKHOF, Jing ZHANG, Martijn Petrus Christianus VAN HEUMEN, Patriek Adrianus Alphonsus Maria BRUURS, Erheng WANG, Vineet SHARMA, Makfir SEFA, Shao-Wei FU, Simone Maria SCOLARI, Johannes Andreas Henricus Maria JACOBS