Patents by Inventor Khanh A. Duong
Khanh A. Duong 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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Patent number: 10711603Abstract: In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar.Type: GrantFiled: August 1, 2018Date of Patent: July 14, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Patent number: 10449074Abstract: A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.Type: GrantFiled: May 5, 2016Date of Patent: October 22, 2019Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Khanh Duong, Jill A. McCoy
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Patent number: 10433996Abstract: A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.Type: GrantFiled: May 5, 2016Date of Patent: October 8, 2019Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Khanh Duong, Jill A. McCoy
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Publication number: 20180355716Abstract: In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar.Type: ApplicationFiled: August 1, 2018Publication date: December 13, 2018Inventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Publication number: 20160317338Abstract: A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.Type: ApplicationFiled: May 5, 2016Publication date: November 3, 2016Inventors: Khanh Duong, Jill A. McCoy
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Publication number: 20160317337Abstract: A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.Type: ApplicationFiled: May 5, 2016Publication date: November 3, 2016Inventors: Khanh Duong, Jill A. McCoy
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Patent number: 9364361Abstract: A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.Type: GrantFiled: March 13, 2014Date of Patent: June 14, 2016Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Khanh Duong, Jill A. McCoy
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Publication number: 20150257910Abstract: A sheath used to protect a medical device has one or more strips formed over a portion thereof. The medical device is a scaffold crimped to a balloon and mounted to a catheter. The sheath is two-piece, including a protecting and constraining sheath part. The strips facilitate removal of the constraining sheath from the scaffold in manner that reduces instances of damage caused by improper removal of the sheath from the medical device.Type: ApplicationFiled: March 13, 2014Publication date: September 17, 2015Applicant: Abbott Cardiovascular Systems Inc.Inventors: Khanh Duong, Jill A. McCoy
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Publication number: 20140116783Abstract: In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar.Type: ApplicationFiled: January 8, 2014Publication date: May 1, 2014Applicant: Schlumberger Technology CorporationInventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Patent number: 8668021Abstract: A wellhead seal assembly that forms a metal-to-metal seal between inner and outer wellhead members. A metal seal ring has inner and outer walls separated by a slot. An elastomeric seal is located below the seal ring and has a bottom portion that contacts an upward facing shoulder of a hanger. An energizing ring with a tapered nose is moved into the slot. The tapered nose has a compound angle that determines how much the nose travels into the slot when a force is applied to the energizing ring. Once the elastomeric seal is compressed to a desired level, the load on the energizing ring has increased to the point that the tapered nose of the energizing ring will further enters the slot and force the outer and inner walls of the metal seal into sealing engagement with the inner and outer wellhead members.Type: GrantFiled: October 26, 2010Date of Patent: March 11, 2014Assignee: Vetco Gray Inc.Inventor: Khanh A. Duong
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Patent number: 8636064Abstract: In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar.Type: GrantFiled: December 3, 2012Date of Patent: January 28, 2014Assignee: Schlumberger Technology CorporationInventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Patent number: 8631878Abstract: A ring like seal assembly for a wellhead assembly that seals between a pair of coaxial tubulars. The seal assembly includes a spring member for exerting an axial force on the seal. The spring member projects from an end of the seal assembly substantially parallel to the axis of the seal assembly and is compressed when installing the seal assembly between the tubulars. Compressing the spring member maintains an axial force on the seal assembly to keep the seal assembly radially deformed so that it can maintain sealing contact with both coaxial tubulars.Type: GrantFiled: January 21, 2010Date of Patent: January 21, 2014Assignee: Vetco Gray Inc.Inventor: Khanh A. Duong
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Patent number: 8336622Abstract: An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device.Type: GrantFiled: May 13, 2011Date of Patent: December 25, 2012Assignee: Schlumberger Technology CorporationInventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Publication number: 20120098203Abstract: A wellhead seal assembly that forms a metal-to-metal seal between inner and outer wellhead members. A metal seal ring has inner and outer walls separated by a slot. An elastomeric seal is located below the seal ring and has a bottom portion that contacts an upward facing shoulder of a hanger. An energizing ring with a tapered nose is moved into the slot. The tapered nose has a compound angle that determines how much the nose travels into the slot when a force is applied to the energizing ring. Once the elastomeric seal is compressed to a desired level, the load on the energizing ring has increased to the point that the tapered nose of the energizing ring will further enters the slot and force the outer and inner walls of the metal seal into sealing engagement with the inner and outer wellhead members.Type: ApplicationFiled: October 26, 2010Publication date: April 26, 2012Applicant: VETCO GRAY INC.Inventor: Khanh A. Duong
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Patent number: 8118097Abstract: An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. A retainer is configured to absorb axial loading of the sample chamber within the cavity.Type: GrantFiled: July 2, 2009Date of Patent: February 21, 2012Assignee: Schlumberger Technology CorporationInventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Patent number: 8056625Abstract: An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device.Type: GrantFiled: July 2, 2009Date of Patent: November 15, 2011Assignee: Schlumberger Technology CorporationInventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Publication number: 20110220412Abstract: An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device.Type: ApplicationFiled: May 13, 2011Publication date: September 15, 2011Inventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Publication number: 20110174506Abstract: A ring like seal assembly for a wellhead assembly that seals between a pair of coaxial tubulars. The seal assembly includes a spring member for exerting an axial force on the seal. The spring member projects from an end of the seal assembly substantially parallel to the axis of the seal assembly and is compressed when installing the seal assembly between the tubulars. Compressing the spring member maintains an axial force on the seal assembly to keep the seal assembly radially deformed so that it can maintain sealing contact with both coaxial tubulars.Type: ApplicationFiled: January 21, 2010Publication date: July 21, 2011Applicant: Vetco Gray Inc.Inventor: Khanh A. Duong
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Publication number: 20100326727Abstract: An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. A retainer is configured to absorb lateral loading of the sample chamber within the cavity.Type: ApplicationFiled: July 2, 2009Publication date: December 30, 2010Inventors: Steven G. Villareal, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong
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Publication number: 20100170718Abstract: An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. A retainer is configured to absorb axial loading of the sample chamber within the cavity.Type: ApplicationFiled: July 2, 2009Publication date: July 8, 2010Inventors: STEVEN G. VILLAREAL, Reinhart Ciglenec, Michael J. Stucker, Khanh Duong