Patents by Inventor Shi Hua Zhang
Shi Hua Zhang 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: 11214886Abstract: This application relates to an enclosure for a portable electronic device. The enclosure includes an aluminum alloy substrate and an anodized layer overlaying and formed from the aluminum alloy substrate, wherein the anodized layer has an external surface that has a concentration of zinc that is between about 3 wt % to about 7 wt %.Type: GrantFiled: March 21, 2019Date of Patent: January 4, 2022Assignee: Apple Inc.Inventors: James A. Curran, Rohit G. Puranik, Shi Hua Zhang, James A. Dean, Karin H. Rasmussen
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Patent number: 11178781Abstract: This application relates to a composite part that can include a non-metal layer having attachment features, and a metal part that is joined with the non-metal layer. The metal part can include a plurality of interlocking structures that are disposed at an external surface of the metal part, where each of the interlocking structures can include an opening characterized as having a first width, and an undercut region, where the opening leads into the undercut region, and the undercut region is characterized as having a second width that is greater than the first width such that the undercut region captures and retains one of the attachment features of the non-metal layer.Type: GrantFiled: September 7, 2018Date of Patent: November 16, 2021Assignee: Apple Inc.Inventors: Todd S. Mintz, Shi Hua Zhang, Abhijeet Misra, Eric W. Hamann
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Publication number: 20190382911Abstract: This application relates to an enclosure for a portable electronic device. The enclosure includes an aluminum alloy substrate and an anodized layer overlaying and formed from the aluminum alloy substrate, wherein the anodized layer has an external surface that has a concentration of zinc that is between about 3 wt % to about 7 wt %.Type: ApplicationFiled: March 21, 2019Publication date: December 19, 2019Inventors: James A. CURRAN, Rohit G. PURANIK, Shi Hua ZHANG, James A. DEAN, Karin H. RASMUSSEN
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Publication number: 20190098785Abstract: This application relates to a composite part that can include a non-metal layer having attachment features, and a metal part that is joined with the non-metal layer. The metal part can include a plurality of interlocking structures that are disposed at an external surface of the metal part, where each of the interlocking structures can include an opening characterized as having a first width, and an undercut region, where the opening leads into the undercut region, and the undercut region is characterized as having a second width that is greater than the first width such that the undercut region captures and retains one of the attachment features of the non-metal layer.Type: ApplicationFiled: September 7, 2018Publication date: March 28, 2019Inventors: Todd S. MINTZ, Shi Hua ZHANG, Abhijeet MISRA, Eric W. HAMANN
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Patent number: 9606076Abstract: The present invention is directed to a process for evaluating corrosion resistance of coated metals substrates, such as autobodies at accelerated rate. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages modulated in a stepwise manner for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: GrantFiled: December 21, 2011Date of Patent: March 28, 2017Assignee: AXALTA COATING SYSTEMS IP CO., LLCInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas
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Patent number: 9476820Abstract: A corrosion resistance evaluator is provided for evaluating corrosion resistance of coated metals substrates, such as autobodies, at an accelerated rate. The evaluator includes a chamber for retaining an electrolyte that is exposed to an anode and cathode coated with protective coating being tested. These anode and cathode coatings are provided with predetermined and standardized defects, such as micro-holes, to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The evaluator further comprises an anode holder and a cathode holder for testing the corrosion resistance of the anode and cathode coatings. The evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: GrantFiled: September 23, 2014Date of Patent: October 25, 2016Assignee: AXALTA COATING SYSTEMS IP CO., LLCInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas
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Patent number: 9279189Abstract: Manufacturing methods related to anodizing of metal parts are described. In particular, pre-anodizing and post-anodizing methods for forming a consistent and defect-free interface between metal and non-metal sections of a part are described. Methods involve preventing residues from various manufacturing processes from entering a gap or space at the interface between the metal and non-metal section of the part and that can disrupt subsequent anodizing and anodic film dyeing processes. In particular embodiments, methods involve forming a barrier layer or filler layer between the metal and non-metal sections. Portions of the barrier layer or filler layer can be removed prior to anodizing. The resultant part has a well-defined and uniform space between the metal and non-metal sections that is free from visual defects.Type: GrantFiled: December 29, 2014Date of Patent: March 8, 2016Assignee: Apple Inc.Inventors: Lucy Elizabeth Browning, Masashige Tatebe, Shi Hua Zhang, Michael W. Barnstead, Richard M. Bretherton, Takahiro Oshima, Sean A. Backs, Duy P. Le, Andrew J. Meschke, Thomas Johannessen
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Patent number: 9212986Abstract: The present invention is directed to a process for evaluating corrosion resistance of coated metals substrates, such as autobodies at an accelerated rate. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages modulated in triangular, truncated triangular or trapezoidal manner for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: GrantFiled: December 21, 2011Date of Patent: December 15, 2015Assignee: AXALTA COATING SYSTEMS IP CO., LLCInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C Nahas
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Publication number: 20150315715Abstract: Manufacturing methods related to anodizing of metal parts are described. In particular, pre-anodizing and post-anodizing methods for forming a consistent and defect-free interface between metal and non-metal sections of a part are described. Methods involve preventing residues from various manufacturing processes from entering a gap or space at the interface between the metal and non-metal section of the part and that can disrupt subsequent anodizing and anodic film dyeing processes. In particular embodiments, methods involve forming a barrier layer or filler layer between the metal and non-metal sections. Portions of the barrier layer or filler layer can be removed prior to anodizing. The resultant part has a well-defined and uniform space between the metal and non-metal sections that is free from visual defects.Type: ApplicationFiled: December 29, 2014Publication date: November 5, 2015Inventors: Lucy Elizabeth Browning, Masashige Tatebe, Shi Hua Zhang, Michael W. Barnstead, Richard M. Bretherton, Takahiro Oshima, Sean A. Backs, Duy P. Le, Andrew J. Meschke, Thomas Johannessen
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Publication number: 20150060273Abstract: A corrosion resistance evaluator is provided for evaluating corrosion resistance of coated metals substrates, such as autobodies, at an accelerated rate. The evaluator includes a chamber for retaining an electrolyte that is exposed to an anode and cathode coated with protective coating being tested. These anode and cathode coatings are provided with predetermined and standardized defects, such as micro-holes, to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The evaluator further comprises an anode holder and a cathode holder for testing the corrosion resistance of the anode and cathode coatings. The evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: ApplicationFiled: September 23, 2014Publication date: March 5, 2015Inventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas
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Patent number: 8888976Abstract: The present invention is directed to a corrosion resistance evaluator suitable for corrosion testing coated metals substrates, such as autobodies. A corrosion resistance evaluator provided with a chamber containing electrolyte to which anode and cathode coated with protective coating being tested are exposed. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages for preset durations that are interspaced with recovery periods. The impedance date collected is then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: GrantFiled: January 4, 2010Date of Patent: November 18, 2014Assignee: Axalta Coating Systems IP Co., LLCInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas
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Patent number: 8723535Abstract: The present invention is directed to a process for corrosion resistance evaluation of coated metals substrates, such as autobodies. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: GrantFiled: January 4, 2010Date of Patent: May 13, 2014Assignee: Axalta Coating Systems IP Co., LLCInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas
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Publication number: 20140097096Abstract: The present invention is directed to a process for evaluating corrosion resistance of coated metals substrates, such as autobodies at an accelerated rate. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages modulated in triangular, truncated triangular or trapezoidal manner for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: ApplicationFiled: December 21, 2011Publication date: April 10, 2014Applicant: U.S. COATING IP CO. LLCInventors: Shi Hua Zhang, Lorenz Fred Pelosi, Robert C. Nahas
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Publication number: 20130325364Abstract: The present invention is directed to a process for evaluating corrosion resistance of coated metals substrates, such as autobodies at accelerated rate. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages modulated in a stepwise manner for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: ApplicationFiled: December 21, 2011Publication date: December 5, 2013Applicant: US COATINGS IP CO. LLCInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas
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Patent number: 8491320Abstract: A chip card ejecting mechanism includes a main body, a tray slidably fixed to the main body, a latching element, a first elastic member and a second elastic member. The tray defines a latching groove. The latching element includes latching board, a latching block protruding from the latching board, and a triggering member rotatably fixed to the main body. The first elastic member is resisted between the latching board and the main body, to make the latching block latch with the latching groove. The second elastic member is fixed to the main body and is compressed by the tray. After the triggering member rotates relative to the main body to release the latching block from the latching groove, the second elastic member decompresses to drive the tray out of the main body.Type: GrantFiled: April 23, 2012Date of Patent: July 23, 2013Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) LimitedInventors: Shi-Hua Zhang, Jin-Feng Gao
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Publication number: 20130164958Abstract: A chip card ejecting mechanism includes a main body, a tray slidably fixed to the main body, a latching element, a first elastic member and a second elastic member. The tray defines a latching groove. The latching element includes latching board, a latching block protruding from the latching board, and a triggering member rotatably fixed to the main body. The first elastic member is resisted between the latching board and the main body, to make the latching block latch with the latching groove. The second elastic member is fixed to the main body and is compressed by the tray. After the triggering member rotates relative to the main body to release the latching block from the latching groove, the second elastic member decompresses to drive the tray out of the main body.Type: ApplicationFiled: April 23, 2012Publication date: June 27, 2013Applicants: FIH (HONG KONG) LIMITED, SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD.Inventors: SHI-HUA ZHANG, JIN-FENG GAO
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Publication number: 20130064615Abstract: The present disclosure is directed to a portable device for producing standardized assay areas on conductive substrates coated with organic coating layers. The present disclosure is directed to a process for producing standardized assay areas using the portable device. The portable device and the process can be used to produce assay areas for corrosion evaluation tests at an accelerated rate. The portable device and the process are particularly useful for producing standardized assay areas on large or immobile structures or objects.Type: ApplicationFiled: June 29, 2010Publication date: March 14, 2013Applicant: E I DuPont De Nemours and CompanyInventors: Li Lin, Shi Hua Zhang
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Publication number: 20130064614Abstract: The present disclosure is directed to a device for producing standardized assay areas on conductive substrates coated with organic coating layers. The device can be used to produce standardized assay areas for corrosion evaluation tests at an accelerated rate.Type: ApplicationFiled: June 29, 2010Publication date: March 14, 2013Inventors: Li Lin, Shi Hua Zhang
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Publication number: 20130064617Abstract: The present disclosure is directed to a process for producing standardized assay areas on conductive substrates coated with organic coating layers. The process can be used to produce standardized assay areas for corrosion evaluation tests at an accelerated rate.Type: ApplicationFiled: June 29, 2010Publication date: March 14, 2013Applicant: E I Du Pont de Nemours and CompanyInventors: Shi Hua Zhang, Li Lin
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Publication number: 20120095698Abstract: The present invention is directed to a process for corrosion resistance evaluation of coated metals substrates, such as autobodies. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).Type: ApplicationFiled: January 4, 2010Publication date: April 19, 2012Applicant: E.I.DuPont De Nemours and CompanyInventors: Shi Hua Zhang, Lorenzo Fred Pelosi, Robert C. Nahas