Patents by Inventor Dong-kyu Cha
Dong-kyu Cha 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).
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Publication number: 20210270714Abstract: A system to measure a streaming potential of a core plug includes a measurement cell having a chamber to hold the core plug and an inlet fluid line connected to an inlet port of the measurement cell. A filtration device is arranged to control a salinity and ionic strength of a liquid medium received in the chamber through the inlet fluid line. The filtration device has membrane filters with different ion rejection rates and is controllable to selectively dispose each of the membrane filters in the inlet fluid line.Type: ApplicationFiled: February 28, 2020Publication date: September 2, 2021Applicant: SAUDI ARABIAN OIL COMPANYInventors: Dong Kyu Cha, Subhash C. Ayirala, Ali Abdullah Al-Yousef
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Publication number: 20210247661Abstract: A pressure cell for sum frequency generation spectroscopy includes: a metal pressure chamber; a heating stage that heats the liquid sample; a pump, connected to an interior of the metal pressure chamber, that pressurizes the interior of the metal pressure chamber; and a controller that controls the pump and the heating stage to control a pressure of the interior of the metal pressure chamber and a temperature of a liquid sample. The metal pressure chamber includes: a base that retains the liquid sample; a removable lid that seals against the base to enclose the liquid sample in the metal pressure chamber; and a window in the removable lid that exposes the liquid sample to an exterior of the metal pressure chamber.Type: ApplicationFiled: February 11, 2020Publication date: August 12, 2021Applicant: SAUDI ARABIAN OIL COMPANYInventors: Dong Kyu Cha, Mohammed Badri Al-Otaibi, Salah Hamad Al-Saleh, Ali Abdallah Al-Yousef
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Publication number: 20210247374Abstract: A pressure cell for sum frequency generation spectroscopy includes: a metal pressure chamber; a heating stage that heats a liquid sample; an ultrasonic stage that emulsifies the liquid sample; a chamber pump that pressurizes an interior of the metal pressure chamber; and a controller that controls the chamber pump, the ultrasonic stage, and the heating stage to control a pressure of the interior of the metal pressure chamber, an emulsification of the liquid sample, and a temperature of the liquid sample, respectively. The metal pressure chamber includes: a liquid sample holder that retains the liquid sample; a removable lid that seals against a base; a window in the removable lid; a sample inlet that flows the liquid sample from an exterior of the metal pressure chamber to the liquid sample holder at a predetermined flow rate; and a sample outlet.Type: ApplicationFiled: February 11, 2020Publication date: August 12, 2021Applicant: SAUDI ARABIAN OIL COMPANYInventors: Salah Hamad Al-Saleh, Dong Kyu Cha, Ali Abdallah Al-Yousef
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Publication number: 20210215658Abstract: A method of making a portion of a microfluidic channel includes lithographically patterning a first pattern into a first layer of photoresist disposed on a substrate, the first pattern representative of morphology of a reservoir rock; etching the first pattern into the substrate to form a patterned substrate; disposing a second layer of photoresist onto the patterned substrate; lithographically patterning a second pattern into the second layer of photoresist to reveal portions of the patterned substrate; and depositing calcite onto the exposed portions of the patterned substrate.Type: ApplicationFiled: January 14, 2020Publication date: July 15, 2021Applicant: Saudi Arabian Oil CompanyInventors: Dong Kyu CHA, Ahmed GMIRA, Mohammed Badri AlOtaibi, Ali Abdallah AL-YOUSEF
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Publication number: 20210162352Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A porous membrane is attached to a substrate. Calcite is deposited in porous openings in the porous membrane attached to the substrate. A width of openings in the deposited calcite is in a range from 50 to 100 nanometers (nm). The porous membrane is etched to remove the porous membrane from the substrate to form a fabricated calcite channel structure. Each channel has a width in the range from 50 to 100 nm.Type: ApplicationFiled: January 22, 2021Publication date: June 3, 2021Applicant: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Badri AlOtaibi, Sultan Muhammad Al Enezi, Ali Abdallah Al-Yousef
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Patent number: 10983439Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist is coated on a substrate, and a portion of the photoresist is then exposed to a beam of electrons in a channel pattern. The exposed portion of the photoresist is developed to form a channel pattern, and calcite is deposited in the channel pattern using a calcite precursor gas. The deposited calcite includes at least one side having a length in a range of approximately 50 to 100 nanometers. The photoresist remaining after developing the exposed portion of the photoresist is removed.Type: GrantFiled: April 25, 2019Date of Patent: April 20, 2021Assignee: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Patent number: 10948429Abstract: A process for the preparation and imaging of a sample of rock from an oil and gas reservoir is provided. A sample of reservoir rock may be obtained, such as from a core sample obtained using a core sampling tool inserted in a wellbore extending into an oil and gas reservoir. A photoresist may be deposited on the surface of reservoir rock sample to form a homogenous layer. The photoresist-coated surface of the reservoir rock sample may be imaged using a focused ion beam (FIB). The photoresist protects the pores and other surface features of the rock from damage or implantation by the FIB ion beam and thus minimizes the curtain effect in the resulting images.Type: GrantFiled: April 3, 2019Date of Patent: March 16, 2021Assignee: Saudi Arabian Oil CompanyInventors: Dong kyu Cha, Sultan Enezi, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Patent number: 10926227Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A porous membrane is attached to a substrate. Calcite is deposited in porous openings in the porous membrane attached to the substrate. A width of openings in the deposited calcite is in a range from 50 to 100 nanometers (nm). The porous membrane is etched to remove the porous membrane from the substrate to form a fabricated calcite channel structure. Each channel has a width in the range from 50 to 100 nm.Type: GrantFiled: December 3, 2018Date of Patent: February 23, 2021Assignee: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Badri AlOtaibi, Sultan Muhammad Al Enezi, Ali Abdallah Al-Yousef
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Publication number: 20200301282Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist layer is coated onto a top surface of a silicon nitride (SiN) substrate. After coating the photoresist layer, the photoresist layer is scanned with an electron beam in a predefined pattern. The scanned photoresist is developed to expose portions of the top surface of the SiN substrate in the predefined pattern. Calcite is deposited in the predefined pattern using atomic layer deposition (ALD) using a calcite precursor gas. Using a solvent, a remaining portion of the photoresist layer is removed to expose the deposited calcite in the predefined pattern and on the top surface of the SiN substrate, where a width of the deposited calcite is in range from 50 to 100 nanometers (nm).Type: ApplicationFiled: June 11, 2020Publication date: September 24, 2020Applicant: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Badri AlOtaibi, Ali Abdallah Al-Yousef
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Patent number: 10761428Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist layer is coated onto a top surface of a silicon nitride (SiN) substrate. After coating the photoresist layer, the photoresist layer is scanned with an electron beam in a predefined pattern. The scanned photoresist is developed to expose portions of the top surface of the SiN substrate in the predefined pattern. Calcite is deposited in the predefined pattern using atomic layer deposition (ALD) using a calcite precursor gas. Using a solvent, a remaining portion of the photoresist layer is removed to expose the deposited calcite in the predefined pattern and on the top surface of the SiN substrate, where a width of the deposited calcite is in range from 50 to 100 nanometers (nm).Type: GrantFiled: August 28, 2018Date of Patent: September 1, 2020Assignee: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Badri AlOtaibi, Ali Abdallah Al-Yousef
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Publication number: 20200171492Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A porous membrane is attached to a substrate. Calcite is deposited in porous openings in the porous membrane attached to the substrate. A width of openings in the deposited calcite is in a range from 50 to 100 nanometers (nm). The porous membrane is etched to remove the porous membrane from the substrate to form a fabricated calcite channel structure. Each channel has a width in the range from 50 to 100 nm.Type: ApplicationFiled: December 3, 2018Publication date: June 4, 2020Applicant: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Badri AlOtaibi, Sultan Muhammad Al Enezi, Ali Abdallah Al-Yousef
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Publication number: 20200071824Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist layer is coated onto a top surface of a silicon nitride (SiN) substrate. After coating the photoresist layer, the photoresist layer is scanned with an electron beam in a predefined pattern. The scanned photoresist is developed to expose portions of the top surface of the SiN substrate in the predefined pattern. Calcite is deposited in the predefined pattern using atomic layer deposition (ALD) using a calcite precursor gas. Using a solvent, a remaining portion of the photoresist layer is removed to expose the deposited calcite in the predefined pattern and on the top surface of the SiN substrate, where a width of the deposited calcite is in range from 50 to 100 nanometers (nm).Type: ApplicationFiled: August 28, 2018Publication date: March 5, 2020Applicant: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Badri AlOtaibi, Ali Abdallah Al-Yousef
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Publication number: 20190367801Abstract: A composition for increased hydrocarbon production from a hydrocarbon-bearing reservoir. The composition includes a saltwater solution suitable for injection into the hydrocarbon-bearing reservoir for water flooding, the saltwater solution having a salinity; and a plurality of nanocapsules, where the nanocapsules are operable to be suspended amongst the saltwater solution, where the nanocapsules have an overall positively charged outer surface at respective outer shells of the nanocapsules, where the nanocapsules encapsulate water molecules within the nanocapsules, and where the nanocapsules are operable to release the water molecules in the hydrocarbon-bearing reservoir proximate overall negatively charged zones.Type: ApplicationFiled: May 28, 2019Publication date: December 5, 2019Applicant: Saudi Arabian Oil CompanyInventors: Mohammed Badri Al-Otaibi, Dong Kyu Cha, Ali Abdallah Al-Yousef
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Publication number: 20190250514Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist is coated on a substrate, and a portion of the photoresist is then exposed to a beam of electrons in a channel pattern. The exposed portion of the photoresist is developed to form a channel pattern, and calcite is deposited in the channel pattern using a calcite precursor gas. The deposited calcite includes at least one side having a length in a range of approximately 50 to 100 nanometers. The photoresist remaining after developing the exposed portion of the photoresist is removed.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Publication number: 20190234889Abstract: A process for the preparation and imaging of a sample of rock from an oil and gas reservoir is provided. A sample of reservoir rock may be obtained, such as from a core sample obtained using a core sampling tool inserted in a wellbore extending into an oil and gas reservoir. A photoresist may be deposited on the surface of reservoir rock sample to form a homogenous layer. The photoresist-coated surface of the reservoir rock sample may be imaged using a focused ion beam (FIB). The photoresist protects the pores and other surface features of the rock from damage or implantation by the FIB ion beam and thus minimizes the curtain effect in the resulting images.Type: ApplicationFiled: April 3, 2019Publication date: August 1, 2019Inventors: Dong kyu Cha, Sultan Enezi, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Patent number: 10365564Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist is coated on a substrate, and a portion of the photoresist is then exposed to a beam of electrons in a channel pattern. The exposed portion of the photoresist is developed to form a channel pattern, and calcite is deposited in the channel pattern using a calcite precursor gas. The deposited calcite includes at least one side having a length in a range of approximately 50 to 100 nanometers. The photoresist remaining after developing the exposed portion of the photoresist is removed.Type: GrantFiled: August 9, 2017Date of Patent: July 30, 2019Assignee: Saudi Arabian Oil CompanyInventors: Dong Kyu Cha, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Patent number: 10324049Abstract: A process for the preparation and imaging of a sample of rock from an oil and gas reservoir is provided. A sample of reservoir rock may be obtained, such as from a core sample obtained using a core sampling tool inserted in a wellbore extending into an oil and gas reservoir. A photoresist may be deposited on the surface of reservoir rock sample to form a homogenous layer. The photoresist-coated surface of the reservoir rock sample may be imaged using a focused ion beam (FIB). The photoresist protects the pores and other surface features of the rock from damage or implantation by the FIB ion beam and thus minimizes the curtain effect in the resulting images.Type: GrantFiled: August 24, 2017Date of Patent: June 18, 2019Assignee: Saudi Arabian Oil CompanyInventors: Dong kyu Cha, Sultan Enezi, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Publication number: 20190049847Abstract: A method for fabricating calcite channels in a nanofluidic device is described. A photoresist is coated on a substrate, and a portion of the photoresist is then exposed to a beam of electrons in a channel pattern. The exposed portion of the photoresist is developed to form a channel pattern, and calcite is deposited in the channel pattern using a calcite precursor gas. The deposited calcite includes at least one side having a length in a range of approximately 50 to 100 nanometers. The photoresist remaining after developing the exposed portion of the photoresist is removed.Type: ApplicationFiled: August 9, 2017Publication date: February 14, 2019Inventors: Dong Kyu Cha, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Publication number: 20180231477Abstract: A process for the preparation and imaging of a sample of rock from an oil and gas reservoir is provided. A sample of reservoir rock may be obtained, such as from a core sample obtained using a core sampling tool inserted in a wellbore extending into an oil and gas reservoir. A photoresist may be deposited on the surface of reservoir rock sample to form a homogenous layer. The photoresist-coated surface of the reservoir rock sample may be imaged using a focused ion beam (FIB). The photoresist protects the pores and other surface features of the rock from damage or implantation by the FIB ion beam and thus minimizes the curtain effect in the resulting images.Type: ApplicationFiled: August 24, 2017Publication date: August 16, 2018Inventors: Dong kyu Cha, Sultan Enezi, Mohammed Al Otaibi, Ali Abdallah Al-Yousef
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Patent number: 8520113Abstract: Provided are a digital photographing apparatus capable of taking a self-shot, a method of controlling the same, and a recording medium storing a program to execute the method. A digital photographing apparatus includes a shooting unit, configured to generate a live image of a subject; a main display unit, configured to display the generated image; an auxiliary display unit mounted on a front of the digital photographing apparatus and configured to display the generated image; a determination unit configured to determine whether the auxiliary display unit is switched on or off; and a self-shot setting unit configured to set a self-shot mode when the auxiliary display unit is switched from an ‘off’ state to an ‘on’ state.Type: GrantFiled: August 6, 2010Date of Patent: August 27, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Hye-jin Kim, Jun-ho Choi, Dong-kyu Cha