Patents by Inventor Zhifang Wu
Zhifang Wu 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: 11387551Abstract: The present invention discloses a triple-resonant null frequency scanning antenna, which belongs to the technical fields of the Internet of Things and microwave. The triple-resonant null frequency scanning antenna comprises a circular sector magnetic dipole arranged on a medium substrate, and rectangular notches are symmetrically arranged on a sector patch of the circular sector magnetic dipole. The circular sector magnetic dipole is fixed on the medium substrate by a second shorting pin and third shorting pins, an flared angle of the circular sector magnetic dipole is a first central angle, and two third shorting pins are present and are symmetrically arranged on both sides of the angular bisector of the first central angle.Type: GrantFiled: June 16, 2020Date of Patent: July 12, 2022Assignee: NANJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Wenjun Lv, Sijie Li, Yun Shao, Jianyuan Wang, Han Wu, Zhibin Zhao, Zhifang Wu, Xiaohui Li, Hongbo Zhu, Xiaofei Li
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Patent number: 11349216Abstract: The present invention discloses a sector dual-resonant dipole antenna. Radiation elements of the antenna are two identical sector patches. Two identical rectangular notches can be symmetrically arranged or two identical tuning stubs can be symmetrically loaded on the sector patches at positions deviating from the central axis of the two sector patches. Exciting points are symmetrically arranged on sides of the sector patches close to a central axis. The present invention realizes a wide beamwidth radiation characteristic through a two-dimensional sectorial resonator, and then the notches are arranged or the tuning stubs are loaded at appropriate positions of two arms of the sectorial resonator, and thereby a dual-resonant characteristic can be realized within a working band.Type: GrantFiled: June 16, 2020Date of Patent: May 31, 2022Assignee: NANJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Wenjun Lv, Zhibin Zhao, Zhuang Li, Han Wu, Sijie Li, Jianyuan Wang, Zhifang Wu, Xiaohui Li, Hongbo Zhu, Xiaofei Li
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Publication number: 20220031575Abstract: Disclosure is a tooth mineralization solution and a mineralization method thereof. The tooth mineralization solution can be used to mineralize collagen and teeth. The mineralization solution component of the present application comprises two parts, namely, reagent A containing non-collagenous protein analogue and calcium salt, and reagent B is phosphate solution. The mineralization method of the tooth mineralization solution of the present application comprises the steps of first applying the reagent A to the surface of tooth, and then applying the reagent B to achieve tooth mineralization. In addition, the mineralization solution of the present application can also be used to achieve biomimetic mineralization of collagen by the same method, comprising the steps of soaking or floating single-layer reconstituted collagen fibril, collagen gel or collagen sponge in the reagent A, and then soaking or floating in the reagent B to achieve biomimetic mineralization.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Inventors: Baiping FU, Zihuai ZHOU, Zhifang WU
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Publication number: 20210376474Abstract: The present invention discloses a sector dual-resonant dipole antenna. Radiation elements of the antenna are two identical sector patches. Two identical rectangular notches can be symmetrically arranged or two identical tuning stubs can be symmetrically loaded on the sector patches at positions deviating from the central axis of the two sector patches. Exciting points are symmetrically arranged on sides of the sector patches close to a central axis. The present invention realizes a wide beamwidth radiation characteristic through a two-dimensional sectorial resonator, and then the notches are arranged or the tuning stubs are loaded at appropriate positions of two arms of the sectorial resonator, and thereby a dual-resonant characteristic can be realized within a working band.Type: ApplicationFiled: June 16, 2020Publication date: December 2, 2021Inventors: Wenjun LV, Zhibin ZHAO, Zhuang LI, Han WU, Sijie LI, Jianyuan WANG, Zhifang WU, Xiaohui LI, Hongbo ZHU, Xiaofei LI
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Publication number: 20210367334Abstract: The present invention discloses a triple-resonant null frequency scanning antenna, which belongs to the technical fields of the Internet of Things and microwave. The triple-resonant null frequency scanning antenna comprises a circular sector magnetic dipole arranged on a medium substrate, and rectangular notches are symmetrically arranged on a sector patch of the circular sector magnetic dipole. The circular sector magnetic dipole is fixed on the medium substrate by a second shorting pin and third shorting pins, an flared angle of the circular sector magnetic dipole is a first central angle, and two third shorting pins are present and are symmetrically arranged on both sides of the angular bisector of the first central angle.Type: ApplicationFiled: June 16, 2020Publication date: November 25, 2021Inventors: Wenjun LV, Sijie LI, Yun SHAO, Jianyuan WANG, Han WU, Zhibin ZHAO, Zhifang WU, Xiaohui LI, Hongbo ZHU, Xiaofei LI
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Patent number: 9689670Abstract: The invention relates to a device for detecting the thickness and crown of plates and strips, belonging to the field of nuclear technology applications. The device comprises a C-frame; two ray source mounted in an upper arm of the C-frame and distributed at an interval along the width direction of a steel plate/strip; two rows of gas-pressurized ionization chamber detector arrays mounted in a lower arm of the C-frame and distributed at an interval along the moving direction of the plate/strip; collimators mounted below the two ray source, the collimators enabling the rays of each ray source to only irradiate to a corresponding row of detectors; pre-amplifier modules connected with the detector arrays; a data collector connected with the pre-amplifier modules; a data processing and displaying computer connected with the data collector; and a cooling water and pressurized air service system and a control system for ensuring system operation and monitoring.Type: GrantFiled: March 29, 2012Date of Patent: June 27, 2017Assignee: TSINGHUA UNIVERSITYInventors: Zhifang Wu, Jigang An, Yuai Zhang, Jichen Miao, Litao Li, Guilai Xing, Liqiang Wang, Zhentao Wang, Ximing Liu, Jian Zheng, Yibin Huang, Xiaojing Guo, Chunming Tan
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Publication number: 20150226549Abstract: The invention relates to a device for detecting the thickness and crown of plates and strips, belonging to the field of nuclear technology applications. The device comprises a C-frame; two ray source mounted in an upper arm of the C-frame and distributed at an interval along the width direction of a steel plate/strip; two rows of gas-pressurized ionization chamber detector arrays mounted in a lower arm of the C-frame and distributed at an interval along the moving direction of the plate/strip; collimators mounted below the two ray source, the collimators enabling the rays of each ray source to only irradiate to a corresponding row of detectors; pre-amplifier modules connected with the detector arrays; a data collector connected with the pre-amplifier modules; a data processing and displaying computer connected with the data collector; and a cooling water and pressurized air service system and a control system for ensuring system operation and monitoring.Type: ApplicationFiled: March 29, 2012Publication date: August 13, 2015Applicant: TSINGHUA UNIVERSITYInventors: Zhifang Wu, Jigang An, Yuai Zhang, Jichen Miao, Litao Li, Guilai Xing, Liqiang Wang, Zhentao Wang, Ximing Liu, Jian Zheng, Yibin Huang, Xiaojing Guo, Chunming Tan
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Patent number: 7424094Abstract: Gamma radiation imaging system for non-destructive inspection of the luggage contains a DR sub-system, which obtains the projected image of the luggage by translationally scanning, and a CT sub-system, which obtains the tornograph image of the luggage by rotating scanning. Said DR sub-system includes a fixed gantry, a conveyor system, a radiation source mounted on the fixed gantry, front and back collimators, and the array detector. Said CT sub-system includes a rotating gantry, a conveyor system, a radiation source mounted on the rotating gantry, front and back collimators, and the array detector, wherein, the radiation source in said CT sub-system is 192Ir or 75Se radioactive isotope gamma source with high specific activity. Said gamma source is enclosed in a shield chamber with a projecting opening. The shield chamber is mounted on said rotating gantry.Type: GrantFiled: June 25, 2004Date of Patent: September 9, 2008Assignee: Tsinghua UniversityInventors: Jigang An, Yisi Liu, Xincheng Xiang, Haifeng Wu, Zhifang Wu, Liqiang Wang
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Patent number: D938755Type: GrantFiled: August 4, 2020Date of Patent: December 21, 2021Assignee: Yiwu Ligao Technology Co., Ltd.Inventors: Zhifang Wu, Chengkang Zong
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Patent number: D979285Type: GrantFiled: August 4, 2022Date of Patent: February 28, 2023Inventor: Zhifang Wu