Patents by Inventor Youngsam Bae

Youngsam Bae 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: 7964433
    Abstract: Described is a device having an anti-reflection surface. The device comprises a silicon substrate with a plurality of silicon spikes formed on the substrate. A first metallic layer is formed on the silicon spikes to form the anti-reflection surface. The device further includes an aperture that extends through the substrate. A second metallic layer is formed on the substrate. The second metallic layer includes a hole that is aligned with the aperture. A spacer is attached with the silicon substrate to provide a gap between an attached sensor apparatus. Therefore, operating as a Micro-sun sensor, light entering the hole passes through the aperture to be sensed by the sensor apparatus. Additionally, light reflected by the sensor apparatus toward the first side of the silicon substrate is absorbed by the first metallic layer and silicon spikes and is thereby prevented from being reflected back toward the sensor apparatus.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: June 21, 2011
    Assignee: California Institute of Technology
    Inventors: Youngsam Bae, Harish Manohara, Sohrab Mobasser, Choonsup Lee
  • Publication number: 20100009495
    Abstract: Described is a device having an anti-reflection surface. The device comprises a silicon substrate with a plurality of silicon spikes formed on the substrate. A first metallic layer is formed on the silicon spikes to form the anti-reflection surface. The device further includes an aperture that extends through the substrate. A second metallic layer is formed on the substrate. The second metallic layer includes a hole that is aligned with the aperture. A spacer is attached with the silicon substrate to provide a gap between an attached sensor apparatus. Therefore, operating as a Micro-sun sensor, light entering the hole passes through the aperture to be sensed by the sensor apparatus. Additionally, light reflected by the sensor apparatus toward the first side of the silicon substrate is absorbed by the first metallic layer and silicon spikes and is thereby prevented from being reflected back toward the sensor apparatus.
    Type: Application
    Filed: August 12, 2009
    Publication date: January 14, 2010
    Applicant: California Institute of Technology
    Inventors: Youngsam Bae, Harish Manohara, Sohrab Mobasser, Choonsup Lee
  • Publication number: 20090187072
    Abstract: An endoscope including a rigid section having opposed first and second ends and an opening situated between the first and second ends, the rigid section defining a longitudinal axis; a handle portion coupled to a first end of the rigid section and having first and second scissor-type handles suitable for grasping by a user; and a base part situated at the second end of the rigid section and coupled to the first handle of the scissor-type handles such that displacement of the first handle causes a rotation of the base part.
    Type: Application
    Filed: December 18, 2008
    Publication date: July 23, 2009
    Inventors: Harish M. MANOHARA, Anna Liao, Youngsam Bae, Hrayr Karnig Shahinian
  • Publication number: 20090108183
    Abstract: Described is a device having an anti-reflection surface. The device comprises a silicon substrate with a plurality of silicon spikes formed on the substrate. A first metallic layer is formed on the silicon spikes to form the anti-reflection surface. The device further includes an aperture that extends through the substrate. A second metallic layer is formed on the substrate. The second metallic layer includes a hole that is aligned with the aperture. A spacer is attached with the silicon substrate to provide a gap between an attached sensor apparatus. Therefore, operating as a Micro-sun sensor, light entering the hole passes through the aperture to be sensed by the sensor apparatus. Additionally, light reflected by the sensor apparatus toward the first side of the silicon substrate is absorbed by the first metallic layer and silicon spikes and is thereby prevented from being reflected back toward the sensor apparatus.
    Type: Application
    Filed: September 7, 2006
    Publication date: April 30, 2009
    Inventors: Youngsam Bae, Sohrab Mooasser, Harish Manohara, Choonsup Lee, Kungsam Bae
  • Patent number: 7396478
    Abstract: A Multiple Internal Seal Ring (MISR) Micro-Electro-Mechanical System (MEMS) vacuum packaging method that hermetically seals MEMS devices using MISR. The method bonds a capping plate having metal seal rings to a base plate having metal seal rings by wafer bonding the capping plate wafer to the base plate wafer. Bulk electrodes may be used to provide conductive paths between the seal rings on the base plate and the capping plate. All seals are made using only metal-to-metal seal rings deposited on the polished surfaces of the base plate and capping plate wafers. However, multiple electrical feed-through metal traces are provided by fabricating via holes through the capping plate for electrical connection from the outside of the package through the via-holes to the inside of the package. Each metal seal ring serves the dual purposes of hermetic sealing and providing the electrical feed-through metal trace.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: July 8, 2008
    Assignees: California Institute of Technology, The Boeing Company
    Inventors: Ken J. Hayworth, Karl Y. Yee, Kirill V. Shcheglov, Youngsam Bae, Dean V. Wiberg, A. Dorian Challoner, Chris S. Peay
  • Publication number: 20070298542
    Abstract: A Multiple Internal Seal Ring (MISR) Micro-Electro-Mechanical System (MEMS) vacuum packaging method that hermetically seals MEMS devices using MISR. The method bonds a capping plate having metal seal rings to a base plate having metal seal rings by wafer bonding the capping plate wafer to the base plate wafer. Bulk electrodes may be used to provide conductive paths between the seal rings on the base plate and the capping plate. All seals are made using only metal-to-metal seal rings deposited on the polished surfaces of the base plate and capping plate wafers. However, multiple electrical feed-through metal traces are provided by fabricating via holes through the capping plate for electrical connection from the outside of the package through the via-holes to the inside of the package. Each metal seal ring serves the dual purposes of hermetic sealing and providing the electrical feed-through metal trace.
    Type: Application
    Filed: September 5, 2007
    Publication date: December 27, 2007
    Applicants: California Institute of Technology, The Boeing Company
    Inventors: Ken Hayworth, Karl Yee, Kirill Shcheglov, Youngsam Bae, Dean Wiberg, A. Challoner, Chris Peay
  • Patent number: 7285844
    Abstract: A Multiple Internal Seal Ring (MISR) Micro-Electro-Mechanical System (MEMS) vacuum package that hermetically seals MEMS devices using MISR. The method bonds a capping plate having metal seal rings to a base plate having metal seal rings by wafer bonding the capping plate wafer to the base plate wafer. Bulk electrodes may be used to provide conductive paths between the seal rings on the base plate and the capping plate. All seals are made using only metal-to-metal seal rings deposited on the polished surfaces of the base plate and capping plate wafers. However, multiple electrical feed-through metal traces are provided by fabricating via holes through the capping plate for electrical connection from the outside of the package through the via-holes to the inside of the package. Each metal seal ring serves the dual purposes of hermetic sealing and providing the electrical feed-through metal trace.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: October 23, 2007
    Assignees: California Institute of Technology, The Boeing Company
    Inventors: Ken J. Hayworth, Karl Y. Yee, Kirill V. Shcheglov, Youngsam Bae, Dean V. Wiberg, A. Dorian Challoner, Chris S. Peay
  • Publication number: 20050017329
    Abstract: A Multiple Internal Seal Ring (MISR) Micro-Electro-Mechanical System (MEMS) vacuum package that hermetically seals MEMS devices using MISR. The method bonds a capping plate having metal seal rings to a base plate having metal seal rings by wafer bonding the capping plate wafer to the base plate wafer. Bulk electrodes may be used to provide conductive paths between the seal rings on the base plate and the capping plate. All seals are made using only metal-to-metal seal rings deposited on the polished surfaces of the base plate and capping plate wafers. However, multiple electrical feed-through metal traces are provided by fabricating via holes through the capping plate for electrical connection from the outside of the package through the via-holes to the inside of the package. Each metal seal ring serves the dual purposes of hermetic sealing and providing the electrical feed-through metal trace.
    Type: Application
    Filed: June 10, 2004
    Publication date: January 27, 2005
    Inventors: Ken Hayworth, Karl Yee, Kirill Shcheglov, Youngsam Bae, Dean Wiberg, A. Challoner, Chris Peay
  • Patent number: 6796179
    Abstract: A split-resonator integrated-post vibratory microgyroscope may be fabricated using micro electrical mechanical systems (MEMS) fabrication techniques. The microgyroscope may include two gyroscope sections bonded together, each gyroscope section including resonator petals, electrodes, and an integrated half post. The half posts are aligned and bonded to act as a single post.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: September 28, 2004
    Assignee: California Institute of Technology
    Inventors: Youngsam Bae, Ken J. Hayworth, Kirill V. Shcheglov
  • Publication number: 20040050160
    Abstract: A split-resonator integrated-post vibratory microgyroscope may be fabricated using micro electrical mechanical systems (MEMS) fabrication techniques. The microgyroscope may include two gyroscope sections bonded together, each gyroscope section including resonator petals, electrodes, and an integrated half post. The half posts are aligned and bonded to act as a single post.
    Type: Application
    Filed: May 16, 2003
    Publication date: March 18, 2004
    Inventors: Youngsam Bae, Ken J. Hayworth, Kirill V. Shcheglov