Patents by Inventor Xianyi Cao
Xianyi Cao 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: 11796680Abstract: Lidar detection device based on a lens and an integrated beam transceiver, comprising a laser, a coupling fiber, a substrate, an input waveguide, a connection waveguide, a 1×N optical switch, a switch electrical interface, N switch output waveguides, N transceiving units, an off-chip processor and a lens, wherein N is a positive integer above 2. The invention can realize three-dimensional detection of a target, and the invention has the characteristics of two-dimensional beam steering independent of wavelength switching, low control complexity, low electric power consumption, receiving and emitting monolithic integration and high receiving efficiency, and being compatible with two laser ranging functions of ToF and FMCW.Type: GrantFiled: August 14, 2020Date of Patent: October 24, 2023Assignee: Shanghai Jiao Tong UniversityInventors: Kan Wu, Chao Li, Xianyi Cao, Jianping Chen
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Publication number: 20210373162Abstract: Lidar detection device based on a lens and an integrated beam transceiver, comprising a laser, a coupling fiber, a substrate, an input waveguide, a connection waveguide, a 1×N optical switch, a switch electrical interface, N switch output waveguides, N transceiving units, an off-chip processor and a lens, wherein N is a positive integer above 2. The invention can realize three-dimensional detection of a target, and the invention has the characteristics of two-dimensional beam steering independent of wavelength switching, low control complexity, low electric power consumption, receiving and emitting monolithic integration and high receiving efficiency, and being compatible with two laser ranging functions of ToF and FMCW.Type: ApplicationFiled: August 14, 2020Publication date: December 2, 2021Inventors: Kan WU, Chao LI, Xianyi CAO, Jianping CHEN
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Patent number: 10444596Abstract: A lens-based integrated two-dimensional beam steering device comprising a substrate, an input waveguide, a connecting waveguide, a 1×N optical switch, an electrical interface for the switch, N output waveguides of the switch, N transmitting units, a lens and a controller. The device of the present invention realizes two-dimensional beam steering and has the characteristics of large power capacity, low control complexity, and low electric power consumption.Type: GrantFiled: January 23, 2019Date of Patent: October 15, 2019Assignee: Shanghai Jiao Tong UniversityInventors: Kan Wu, Xianyi Cao, Chao Li, Jianping Chen
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Publication number: 20180326386Abstract: Methods and systems for controlling a polymerization reactor in a non-sticking regime are disclosed. An exemplary method includes measuring parameters for the polymerization reaction including a reactor temperature and a concentration of an induced condensing agent (ICA) in a polymerization reactor. An equivalent partial pressure ((PICA)equiv) of the ICA is calculated. The polymerization reactor operation is located in a two dimension space defined by a reactor temperature dimension and a ((PICA)equiv) dimension. The location in the two dimensional space is compared to an non-sticking regime, defined as the space between an upper temperature limit (UTL) curve and a lower temperature limit (LTL) curve. Parameters of the polymerization reactor are adjusted to keep the reactor within the non-sticking regime.Type: ApplicationFiled: July 12, 2018Publication date: November 15, 2018Applicant: Univation Technologies, LLCInventors: Abarajith S. Hari, Bruce J. Savatsky, David M. Glowczwski, Xianyi Cao
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Patent number: 10029226Abstract: Methods and systems for controlling a polymerization reactor in a non-sticking regime are disclosed. An exemplary method includes measuring parameters for the polymerization reaction including a reactor temperature and a concentration of an induced condensing agent (ICA) in a polymerization reactor. An equivalent partial pressure ((PICA)equiv) of the ICA is calculated. The polymerization reactor operation is located in a two dimension space defined by a reactor temperature dimension and a ((PICA)equiv) dimension. The location in the two dimensional space is compared to an non-sticking regime, defined as the space between an upper temperature limit (UTL) curve and a lower temperature limit (LTL) curve. Parameters of the polymerization reactor are adjusted to keep the reactor within the non-sticking regime.Type: GrantFiled: September 4, 2013Date of Patent: July 24, 2018Assignee: Univation Technologies, LLCInventors: Abarajith S. Hari, Bruce J. Savatsky, David M. Glowczwski, Xianyi Cao
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Patent number: 9718896Abstract: Methods and systems for controlling a polymerization reaction in a non-sticking regime are disclosed. An exemplary method includes measuring parameters for the polymerization reaction including a reactor temperature and a concentration of an induced condensing agent (ICA) in a polymerization reactor. An equivalent partial pressure ((PICA)equiv) of the ICA is calculated. The polymerization reaction is located in a two dimension space defined by a reactor temperature dimension and a ((PICA)equiv) dimension. The location in the two dimensional space is compared to an non-sticking regime, defined as the space between an upper temperature limit (UTL) curve and a lower temperature limit (LTL) curve. The parameters of the polymerization reaction are adjusted to keep the polymerization reaction within the non-sticking regime.Type: GrantFiled: September 4, 2013Date of Patent: August 1, 2017Assignee: Univation Technologies, LLCInventors: Abarajith S. Hari, Bruce J. Savatsky, David M. Glowczwski, Xianyi Cao
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Publication number: 20150209751Abstract: Methods and systems for controlling a polymerization reactor in a non-sticking regime are disclosed. An exemplary method includes measuring parameters for the polymerization reaction including a reactor temperature and a concentration of an induced condensing agent (ICA) in a polymerization reactor. An equivalent partial pressure ((PICA)equiv) of the ICA is calculated. The polymerization reactor operation is located in a two dimension space defined by a reactor temperature dimension and a ((PICA)equiv) dimension. The location in the two dimensional space is compared to an non-sticking regime, defined as the space between an upper temperature limit (UTL) curve and a lower temperature limit (LTL) curve. Parameters of the polymerization reactor are adjusted to keep the reactor within the non-sticking regime.Type: ApplicationFiled: September 4, 2013Publication date: July 30, 2015Applicant: Univation Technologies, LLCInventors: Abarajith S. Hari, Bruce J. Savatsky, David M. Glowczwski, Xianyi Cao
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Publication number: 20150210782Abstract: Methods and systems for controlling a polymerization reaction in a non-sticking regime are disclosed. An exemplary method includes measuring parameters for the polymerization reaction including a reactor temperature and a concentration of an induced condensing agent (ICA) in a polymerization reactor. An equivalent partial pressure ((PICA)equiv) of the ICA is calculated. The polymerization reaction is located in a two dimension space defined by a reactor temperature dimension and a ((PICA)equiv) dimension. The location in the two dimensional space is compared to an non-sticking regime, defined as the space between an upper temperature limit (UTL) curve and a lower temperature limit (LTL) curve. The parameters of the polymerization reaction are adjusted to keep the polymerization reaction within the non-sticking regime.Type: ApplicationFiled: September 4, 2013Publication date: July 30, 2015Applicant: Univation Technologies, LLCInventors: Abarajith S. Hari, Bruce J. Savatsky, David M. Glowczwski, Xianyi Cao
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Patent number: 8975427Abstract: A method of synthesizing an alkyl cyclopentadiene compound is disclosed. The method includes contacting at least one cyclopentadienyl anion source and at least one alkyl group source to form at least one alkyl cyclopentadiene compound. The method further includes extracting the alkyl cyclopentadiene compound with a hydrocarbon solvent. The alkyl cyclopentadiene compound may be converted to a metallocene catalyst compound.Type: GrantFiled: April 5, 2011Date of Patent: March 10, 2015Assignee: Univation Technologies, LLCInventors: C. Jeff Harlan, Xianyi Cao, Francis C. Rix
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Publication number: 20130085289Abstract: A method of synthesizing an alkyl cyclopentadiene compound is disclosed. The method includes contacting at least one cyclopentadienyl anion source and at least one alkyl group source to form at least one alkyl cyclopentadiene compound. The method further includes extracting the alkyl cyclopentadiene compound with a hydrocarbon solvent. The alkyl cyclopentadiene compound may be converted to a metallocene catalyst compound.Type: ApplicationFiled: April 5, 2011Publication date: April 4, 2013Applicant: Univation Technologies, LLCInventors: C. Jeff Harlan, Xianyi Cao, Francis C. Rix