Patents by Inventor Pei Zhong
Pei Zhong 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: 20220372522Abstract: The present disclosure relates, in part, to improved methods of making single-stranded DNA (ssDNA) from double-stranded DNA (dsDNA), as well as use of the resulting ssDNA for genome engineering. The disclosure also relates, in part, to improved methods of genetic modification using single stranded DNA binding proteins.Type: ApplicationFiled: October 7, 2020Publication date: November 24, 2022Inventors: Xiquan LIANG, Pei-Zhong TANG, Robert POTTER
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Publication number: 20220257071Abstract: A wet-dry vacuum cleaner device comprising: a housing; a motor-fan assembly mounted in the housing and arranged to generate an air flow between a dirty air inlet and a clean air outlet; a tank arranged to capture liquid entrained in the dirty air flow, the tank comprising a tank inlet in fluid communication with the dirty air inlet and a tank outlet in fluid communication with the motor fan assembly; wherein the tank outlet is in fluid communication with a liquid trap mounted inside the tank arranged to capture liquid entrained in the air flow exiting the tank.Type: ApplicationFiled: May 3, 2022Publication date: August 18, 2022Inventors: Pei Zhong Zheng, Jiang Jian Hui, Ren Bao Jiang, Fei Fei Yang, Hong Xi Wang
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Publication number: 20200325471Abstract: Provided are methods, compositions, reagents, kits that are useful for detecting a specific nucleic acid region in genome with high efficiency and high sensitivity.Type: ApplicationFiled: May 1, 2020Publication date: October 15, 2020Inventor: Pei-Zhong TANG
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Patent number: 10676734Abstract: Provided are methods, compositions, reagents, kits that are useful for detecting a specific nucleic acid region in genome with high efficiency and high sensitivity.Type: GrantFiled: July 11, 2017Date of Patent: June 9, 2020Assignee: LIFE TECHNOLOGIES CORPORATIONInventor: Pei-Zhong Tang
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Patent number: 10238408Abstract: Systems and methods for providing therapeutic shock waves are provided. A modified acoustic lens can include a first lens portion for directing a first part of an acoustic shock wave pulse toward a target and a second lens portion for directing a second part of the acoustic shock wave pulse toward the target. The second lens portion can be offset relative to the first portion such that transmission of the second part of the acoustic shock wave pulse through the second lens portion is delayed by a predetermined amount relative to transmission of the first part through the first lens portion. In situ superposition of the first and second pulses near and at the target can lead to the formation of a pressure waveform with idealized pulse profile and broadened focal width, which can provide for improved comminution of a concretion located within a living body with reduced tissue injury.Type: GrantFiled: February 20, 2012Date of Patent: March 26, 2019Assignee: DUKE UNIVERSITYInventors: Pei Zhong, Glenn M. Preminger, Georgy N. Sankin, Franklin Hadley Cocks, Walter Neal Simmons
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Publication number: 20180016572Abstract: Provided are methods, compositions, reagents, kits that are useful for detecting a specific nucleic acid region in genome with high efficiency and high sensitivity.Type: ApplicationFiled: July 11, 2017Publication date: January 18, 2018Inventor: Pei-Zhong TANG
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Patent number: 9545712Abstract: A sander may include a housing, a motor, a sanding platen, and a two-piece fan. The motor may be disposed within the housing and may include an output shaft. The sanding platen may be driven by the motor for movement relative to the housing. The fan may be driven by the motor and may include a first piece formed from a first material and a second piece formed from a second material. The first piece may include a disk-shaped body having first and second opposite sides. The first side may include a plurality of first blades extending therefrom. The second side may include a plurality of second blades extending therefrom and a recess formed therein. The second piece may be received in the recess and may include a counterweight boss formed thereon.Type: GrantFiled: May 27, 2015Date of Patent: January 17, 2017Assignee: BLACK & DEKCER INC.Inventors: Brent A. Kuehne, Earl Kelican, Jr., Xin Lei Wang, Feng Chen, Pei Zhong Zheng
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Patent number: 9456835Abstract: Lithotripter apparatuses and methods are provided for selectively modifying an acoustic pressure field and can include a shock wave source operable to generate a shock wave having a substantially axisymmetric acoustic pressure field, an acoustic focusing member positioned between the shock wave source and a target, and an acoustic barrier positioned between the shock wave source and the acoustic focusing member. The acoustic barrier can be operable to selectively block a portion of the shock wave generated by the shock wave source such that the substantially axisymmetric pressure field is transformed into a modified acoustic pressure field.Type: GrantFiled: March 23, 2012Date of Patent: October 4, 2016Assignee: DUKE UNIVERSITYInventors: Pei Zhong, Walter Neal Simmons, Georgy N. Sankin, Nathan Smith, Franklin Hadley Cocks, Glenn M. Preminger
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Publication number: 20160113291Abstract: A bun machine includes: a pressing device for forming a first layer and a second layer; an overlaying device for forming a bun crust with the first layer and the second layer; a main transporter, wherein a first end of the main transporter is connected to the overlaying device for transporting the bun crust; a feeding device provided aside the main transporter, comprising: a filling tank for storing and inputting fillings into the feeding device; and a feeding unit feeding the fillings onto the bun crust; a wrapping device provided above the main transporter, wherein the wrapping device wraps the fillings with the bun crust for forming a filled roll; and a separating device connected to a second end of the main transporter, wherein the separating device squeezes the filled roll for separating and sealing the filled roll, so as to produce buns.Type: ApplicationFiled: October 27, 2014Publication date: April 28, 2016Inventor: PEI ZHONG HUANG
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Publication number: 20150258673Abstract: A sander may include a housing, a motor, a sanding platen, and a two-piece fan. The motor may be disposed within the housing and may include an output shaft. The sanding platen may be driven by the motor for movement relative to the housing. The fan may be driven by the motor and may include a first piece formed from a first material and a second piece formed from a second material. The first piece may include a disk-shaped body having first and second opposite sides. The first side may include a plurality of first blades extending therefrom. The second side may include a plurality of second blades extending therefrom and a recess formed therein. The second piece may be received in the recess and may include a counterweight boss formed thereon.Type: ApplicationFiled: May 27, 2015Publication date: September 17, 2015Inventors: Brent A. KUEHNE, Earl KELICAN, Xin Lei WANG, Feng CHEN, Pei Zhong ZHEN
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Patent number: 9102048Abstract: A sander may include a housing, a motor, a sanding platen, and a two-piece fan. The motor may be disposed within the housing and may include an output shaft. The sanding platen may be driven by the motor for movement relative to the housing. The fan may be driven by the motor and may include a first piece formed from a first material and a second piece formed from a second material. The first piece may include a disk-shaped body having first and second opposite sides. The first side may include a plurality of first blades extending therefrom. The second side may include a plurality of second blades extending therefrom and a recess formed therein. The second piece may be received in the recess and may include a counterweight boss formed thereon.Type: GrantFiled: November 29, 2013Date of Patent: August 11, 2015Assignee: BLACK & DECKER INC.Inventors: Brent A. Kuehne, Earl Kelican, Jr., Xin Lei Wang, Feng Chen, Pei Zhong Zhen
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Publication number: 20150151422Abstract: A sander may include a housing, a motor, a sanding platen, and a two-piece fan. The motor may be disposed within the housing and may include an output shaft. The sanding platen may be driven by the motor for movement relative to the housing. The fan may be driven by the motor and may include a first piece formed from a first material and a second piece formed from a second material. The first piece may include a disk-shaped body having first and second opposite sides. The first side may include a plurality of first blades extending therefrom. The second side may include a plurality of second blades extending therefrom and a recess formed therein. The second piece may be received in the recess and may include a counterweight boss formed thereon.Type: ApplicationFiled: November 29, 2013Publication date: June 4, 2015Applicant: BLACK & DECKER INC.Inventors: Brent A. Kuehne, Earl Kelican, JR., Xin Lei Wang, Feng Chen, Pei Zhong Zhen
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Publication number: 20130046210Abstract: Lithotripter apparatuses and methods are provided for selectively modifying an acoustic pressure field and can include a shock wave source operable to generate a shock wave having a substantially axisymmetric acoustic pressure field, an acoustic focusing member positioned between the shock wave source and a target, and an acoustic barrier positioned between the shock wave source and the acoustic focusing member. The acoustic barrier can be operable to selectively block a portion of the shock wave generated by the shock wave source such that the substantially axisymmetric pressure field is transformed into a modified acoustic pressure field.Type: ApplicationFiled: March 23, 2012Publication date: February 21, 2013Inventors: Pei Zhong, Walter Neal Simmons, Georgy N. Sankin, Nathan Smith, Franklin Hadley Cocks, Glenn M. Preminger
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Publication number: 20120215138Abstract: Systems and methods for providing therapeutic shock waves are provided. A modified acoustic lens can include a first lens portion for directing a first part of an acoustic shock wave pulse toward a target and a second lens portion for directing a second part of the acoustic shock wave pulse toward the target. The second lens portion can be offset relative to the first portion such that transmission of the second part of the acoustic shock wave pulse through the second lens portion is delayed by a predetermined amount relative to transmission of the first part through the first lens portion. In situ superposition of the first and second pulses near and at the target can lead to the formation of a pressure waveform with idealized pulse profile and broadened focal width, which can provide for improved comminution of a concretion located within a living body with reduced tissue injury.Type: ApplicationFiled: February 20, 2012Publication date: August 23, 2012Inventors: PEI ZHONG, GLENN M. PREMINGER, GEORGY N. SANKIN, FRANKLIN HADLEY COCKS, WALTER NEAL SIMMONS
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Publication number: 20070231906Abstract: Compositions and methods are provided for generating three frame cDNA expression libraries for functional screening of proteins. The invention includes sets of 5? adapters for cloning cDNA molecules in which the sets include three adapters that can be used to clone a particular cDNA in all three reading frames. The libraries so generated have greater complexity of expressed open reading frames, and thus can improve the success of functional protein screens, such as two hybrid screens. The adapters also have recombination sites for efficient cloning and transfer between systems.Type: ApplicationFiled: October 24, 2006Publication date: October 4, 2007Applicant: Invitrogen CorporationInventors: Pei-Zhong Tang, Phillip Gray
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Publication number: 20050038361Abstract: The invention relates to an improved apparatus for the comminution of concretions in vivo by controlled, concentrated cavitation energy using two shock wave pulses with a specified time delay and pressure relationship, with the first shock wave pulse being used to induce a transient cavitation bubble cluster near the target concretion, and the second shock wave pulse to control and force the collapse of the cavitation bubble cluster towards the target concretion with concentrated energy disposition while avoiding injury to surrounding tissue. The invention contemplates the use of an improved combined electrohydraulic or electromagnetic and a piezoelectric annular array shock wave generator to produce improved stone comminution with reduced tissue injury in vivo.Type: ApplicationFiled: August 14, 2003Publication date: February 17, 2005Inventors: Pei Zhong, Xufeng Xi, Franklin Cocks, Glenn Preminger
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Patent number: 6770039Abstract: A method to reduce vascular injury produced by lithotripter shock waves comprising the use of particular multi-pulsed shock waves which comminute human concretions with reduced vascular damage.Type: GrantFiled: November 8, 2002Date of Patent: August 3, 2004Assignee: Duke UniversityInventors: Pei Zhong, Yufeng Zhou, Franklin H. Cocks, Glenn M. Preminger
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Publication number: 20030093013Abstract: A method to reduce vascular injury produced by lithotripter shock waves comprising the use of particular multi-pulsed shock waves which comminute human concretions with reduced vascular damage.Type: ApplicationFiled: November 8, 2002Publication date: May 15, 2003Applicant: Duke UniversityInventors: Pei Zhong, Yufeng Zhou, Franklin H. Cocks, Glenn M. Preminger
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Patent number: 6298264Abstract: This invention discloses an apparatus and method for producing microcavitational activity in aqueous fluids for non-invasive macromolecule delivery into living cells. A standard electrohydraulic shock wave lithotripter is fitted with an adjustable ring reflector that shares the same foci as the standard lithotripter hemi-ellipsoidal reflector. A small portion of the spherical shock wave, generated by the spark discharge at the first focus (F1), is reflected and diffracted by the ring reflector, resulting in a weak preceding shock wave approximately 8.5 &mgr;s in front of the lithotripter shock wave reflected and diffracted by the hemi-ellipsoidal reflector. The peak negative pressure of the preceding weak shock wave or pulse at F2 can be adjusted from −0.96 to −1.91 MPa, using an output voltage of 25 kV. Living cells are exposed to the preceding shock wave and the lithotripter shock wave.Type: GrantFiled: August 31, 1998Date of Patent: October 2, 2001Assignee: Duke UniversityInventors: Pei Zhong, Franklin H. Cocks, Glenn M. Preminger, Haifan Lin
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Patent number: 5800365Abstract: The invention discloses a microsecond tandem-pulse electrohydraulic shock wave generator for the comminution of concretions in vivo by controlled, concentrated cavitation energy. This apparatus generates a primary and a secondary shock wave pulse with a specified time delay in microseconds and pressure relationships, with the primary shock wave pulse being used to induce a transient cavitation bubble cluster near the target concretion, and the secondary shock wave pulse consisting of a sequence of reflected pulses producing a pulse that is substantially compressive to control and force the collapse of the cavitation bubble cluster towards the target concretion. This microsecond tandem-pulse is produced by the use of a plurality of ellipsoidal reflecting surfaces of the same focal length, but different major and minor axes.Type: GrantFiled: December 14, 1995Date of Patent: September 1, 1998Assignee: Duke UniversityInventors: Pei Zhong, Franklin H. Cocks, Glenn M. Preminger