Qing Yang Yang

US Patent:

8318873, Nov 27, 2012

Filed:

Feb 3, 2011

Appl. No.:

13/020334

Inventors:

Kumudini C. Jayaratne - Helsinki, FI
Michael D. Jensen - Laurel MD, US
Qing Yang - Bartlesville OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/52
C08F 4/64
C08F 4/76

US Classification:

526114, 526113, 526119, 526118, 526130, 526129, 526127, 526126, 526135, 526137, 526144, 526941, 526943, 526348, 5263482, 5263483, 5263484, 5263485, 5263486, 526351, 526352, 526346

Abstract:

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.

US Patent:

8426538, Apr 23, 2013

Filed:

Sep 8, 2011

Appl. No.:

13/227785

Inventors:

Michael D. Jensen - Laurel MD, US
Max P. McDaniel - Bartlesville OK, US
Joel L. Martin - Bartlesville OK, US
Elizabeth A. Benham - Spring TX, US
Randy L. Muninger - Dewey OK, US
Gary G. Jerdee - Orange TX, US
Ashish M. Sukhadia - Bartlesville OK, US
Qing R. Yang - Bartlesville OK, US
Matthew G. Thorn - Lebanon OH, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/52
C08F 4/64
C08F 4/76

US Classification:

526160, 526161, 526170, 526172, 526943, 526941, 526904, 526126, 526127, 526129, 526130, 526135, 526137, 526348, 5263485, 5263486, 526351, 526352, 502103, 502104, 502118, 502119

Abstract:

This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.

US Patent:

8507621, Aug 13, 2013

Filed:

Oct 30, 2012

Appl. No.:

13/663528

Inventors:

Michael D. Jensen - Laurel MD, US
Qing Yang - Bartlesville OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/64
C08F 4/76
C08F 4/52

US Classification:

526113, 526160, 526170, 526129, 526134, 526114, 526116, 526943, 526941, 526348

Abstract:

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.

US Patent:

20110152670, Jun 23, 2011

Filed:

Dec 1, 2010

Appl. No.:

12/958385

Inventors:

Qing X. Yang - Hummelstown PA, US

International Classification:

A61B 5/055
G01R 33/48
G01R 33/28

US Classification:

600420, 324318

Abstract:

Layers or coats of materials with high dielectric constant or permittivity with very low conductivity are inserted in between radiofrequency (RF) coil or coil's conductive elements and the sample to enhance the signal to noise ratio (SNR), improve image contrast, and reduce the specific absorption rate (SAR) of magnetic resonance imaging or magnetic resonance spectroscopy instruments. The embodiments of the present invention can be used as an auxiliary device to the standard pre-constructed RF coils or incorporated with RF coil constructions for enhancing RF coil performances in both transmission and reception.

US Patent:

20190353735, Nov 21, 2019

Filed:

Feb 7, 2019

Appl. No.:

16/270225

Inventors:

Qing X. Yang - Hummelstown PA, US

International Classification:

G01R 33/565
A61B 5/00
G01R 33/28
A61B 5/055

Abstract:

A method for enhancing the performance of an imaging system that includes providing a magnetic resonance imaging system; providing an object to be imaged, wherein the object has a shape, includes a region of interest therein, and has a first dielectric constant; providing a pad that conforms to the shape of the object and contains a material having a second dielectric constant that is higher than the first dielectric constant; surrounding the pad and the object being imaged with at least one radio frequency coil; using the at least one coil to generate a magnetic field having an intensity of 3 T that extends through the material of the pad and into the region of interest of the object being imaged, and wherein positioning the at least one coil to surround the pad and the object increases the intensity of the magnetic field produced by the at least one coil within the region of interest of the object; using the at least one coil to detect the magnetic field generated in the region of interest of the object being imaged and to convert the detected magnetic field into detectable electrical signals; and increasing signal to noise ratio of detected electrical signals and decreasing required power input to the at least one coil through the placement of the at least one coil around the pad.

US Patent:

20150038831, Feb 5, 2015

Filed:

Aug 4, 2014

Appl. No.:

14/450957

Inventors:

Qing X. YANG - Hummelstown PA, US

International Classification:

G01R 33/565
A61B 5/055
G01R 33/28

US Classification:

600421, 600410

Abstract:

Provided are a spectroscopic method and spectroscopic device for analyzing a region. Layers or coats of materials with high dielectric constant or permittivity with very low conductivity are inserted in between radiofrequency (RF) coil or coil's conductive elements and the sample to enhance the signal to noise ratio (SNR), improve image contrast, and reduce the specific absorption rate (SAR) of magnetic resonance imaging or magnetic resonance spectroscopy instruments. The embodiments of the present invention can be used as an auxiliary device to the standard pre-constructed RF coils or incorporated with RF coil constructions for enhancing RF coil performances in both transmission and reception.