Patents by Inventor Congjun Wang
Congjun Wang 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: 20240095141Abstract: A method and an apparatus for displaying an information flow on a terminal device, an electronic device, a computer-readable storage medium, and a computer program product are provided. An implementation is: in response to detecting an activation operation on an application for displaying the information flow, reproducing, on the terminal device, a first page displayed on the terminal device when the application is last switched to running in the background or closed; and in response to determining that a time interval between the activation operation and the application being last switched to running in the background or closed does not exceed a first threshold, displaying a second page as a continuation of a content entry displayed in the first page, where the second page includes at least one first content entry cached in the terminal device before the activation operation but not displayed in the first page.Type: ApplicationFiled: March 21, 2022Publication date: March 21, 2024Inventors: Yifan ZHANG, Yuqi WANG, Linfei CHU, Jing NING, Kunjie SUN, Yuhang ZHENG, Naifei SONG, Shujuan ZHANG, Lin LIU, Xunzhuo JU, Zhengwei CHEN, Wei ZHANG, Hua ZHANG, Congjun ZHOU, Tingkang WU, Tengfei LV, Hanmeng LIU, Lei WANG
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Publication number: 20220306476Abstract: Amorphous two-dimensional graphene-like carbon films provide benefits to a variety of applications due to advantageous electrical, mechanical, and chemical properties. Methods are provided to efficiently and cheaply create high-quality amorphous two-dimensional carbon films with embedded graphene-like nanocrystallites using coal as a precursor. These methods employ solution-phase deposition of coal-derived graphene-containing quantum dots followed by relatively low-temperature annealing/crosslinking of the quantum dots to form a single two-dimensional layer of carbon that includes a plurality of randomly-oriented discrete graphene domains connected to each other via amorphous carbon regions. Multi-layer films can be easily created by repeating the deposition and annealing processes. Two-dimensional carbon films formed in this manner exhibit improved properties when compared to crystalline graphene sheets and have properties especially suited to use as the storage medium of memristors.Type: ApplicationFiled: March 29, 2022Publication date: September 29, 2022Inventors: Qing Cao, Fufei An, Christopher Matranga, Congjun Wang, Viet Hung Pham
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Patent number: 11408827Abstract: A method for evaluating the pH of an aqueous solution by utilizing the optical properties of a pH sensing material comprised of plurality of optically active nanoparticles dispersed in matrix material. The optically active nanoparticles have an electronic conductivity greater than about 10?1 S/cm and generally have an average nanoparticle diameter of less that about 500 nanometers, and the matrix material is a material which experiences a change in surface charge density over a pH range from 2.0 to 12.0 of at least 1%. The method comprises contacting the pH sensing material and the aqueous solution, illuminating the pH sensing material, and monitoring an optical signal generated through comparison of incident light and exiting light to determine the optical transmission, absorption, reflection, and/or scattering of the pH sensitive material. The optical signal of the pH sensitive material varies in response to the pH of the aqueous solution.Type: GrantFiled: April 24, 2015Date of Patent: August 9, 2022Assignee: U.S. Department of EnergyInventors: Paul R. Ohodnicki, Jr., Congjun Wang, Thomas D. Brown, Barbara Kutchko
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Publication number: 20220111361Abstract: The invention relates to nanocatalysts composed of iron oxide nanoparticles supported on porous interconnected carbon nanosheets (CNS) fabricated from the carbonization of potassium citrate, that are remarkably active for CO2 hydrogenation and Fischer-Tropsch to Olefins (FTO) synthesis, as well as a method for directly converting CO2 and H2 to C2-C4 olefins and direct FTO synthesis.Type: ApplicationFiled: January 13, 2020Publication date: April 14, 2022Applicants: UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, NATIONAL ENERGY TECHNOLOGY LABORATORY (NETL)Inventors: Sittichai NATESAKHAWAT, Christopher MATRANGA, Douglas KAUFFMAN, Congjun WANG, Yunyun ZHOU
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Patent number: 10274431Abstract: A method for evaluating the pH of an aqueous solution by utilizing the optical properties of a pH sensing material includes optically active nanoparticles fixed to a substrate. The optically active nanoparticles have a localized refractive index modulation over a pH range from 2.0 to 12.0 of at least 1% and, where the plurality of optically active nanoparticles have an average nanoparticle diameter of less than about 500 nanometers. The method includes contacting the pH sensing material with the aqueous solution, illuminating the pH sensing material, and monitoring an optical signal generated through comparison of incident light and exiting light to determine the optical transmission, absorption, reflection, and/or scattering of the pH sensitive material. The optical signal of the pH sensitive material varies in response to the pH of the aqueous solution, providing a means by which the pH and any changes in the pH may be analyzed.Type: GrantFiled: April 14, 2016Date of Patent: April 30, 2019Assignee: U.S. Department of EnergyInventors: Douglas Kauffman, Christopher Matranga, Paul R. Ohodnicki, Jr., Xin Su, Congjun Wang
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Patent number: 8986511Abstract: The method provides for use of sensitized photocatalyst for the photocatalytic reduction of CO2 under visible light illumination. The photosensitized catalyst is comprised of a wide band gap semiconductor material, a transition metal co-catalyst, and a semiconductor sensitizer. The semiconductor sensitizer is photoexcited by visible light and forms a Type II band alignment with the wide band gap semiconductor material. The wide band gap semiconductor material and the semiconductor sensitizer may be a plurality of particles, and the particle diameters may be selected to accomplish desired band widths and optimize charge injection under visible light illumination by utilizing quantum size effects. In a particular embodiment, CO2 is reduced under visible light illumination using a CdSe/Pt/TiO2 sensitized photocatalyst with H2O as a hydrogen source.Type: GrantFiled: October 13, 2010Date of Patent: March 24, 2015Assignee: U.S. Department of EnergyInventors: Christopher Matranga, Robert L. Thompson, Congjun Wang
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Patent number: 8836945Abstract: The disclosure relates to a method of detecting a change in a chemical composition by contacting a conducting oxide material with a monitored stream, illuminating the conducting oxide material with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The conducting metal oxide has a carrier concentration of at least 1017/cm3, a bandgap of at least 2 eV, and an electronic conductivity of at least 10?1 S/cm, where parameters are specified at the gas stream temperature. The optical response of the conducting oxide materials is proposed to result from the high carrier concentration and electronic conductivity of the conducting metal oxide, and the resulting impact of changing gas atmospheres on that relatively high carrier concentration and electronic conductivity.Type: GrantFiled: December 20, 2013Date of Patent: September 16, 2014Assignee: U.S. Department of EnergyInventors: Paul R. Ohodnicki, Jr., Congjun Wang, Mark A. Andio
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Patent number: 8638440Abstract: The disclosure relates to a method of detecting a change in a chemical composition by contacting a doped oxide material with a monitored stream, illuminating the doped oxide material with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The doped metal oxide has a carrier concentration of at least 1018/cm3, a bandgap of at least 2 eV, and an electronic conductivity of at least 101 S/cm, where parameters are specified at a temperature of 25° C. The optical response of the doped oxide materials results from the high carrier concentration of the doped metal oxide, and the resulting impact of changing gas atmospheres on that relatively high carrier concentration. These changes in effective carrier densities of conducting metal oxide nanoparticles are postulated to be responsible for the change in measured optical absorption associated with free carriers.Type: GrantFiled: June 26, 2013Date of Patent: January 28, 2014Assignee: U.S. Department of EnergyInventors: Paul R. Ohodnicki, Jr., Congjun Wang, Mark A. Andio
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Publication number: 20130062185Abstract: The invention refers to a tunnel typed coking furnace with a movable sliding bed and the method using the same belonging to the coking field, comprising a furnace body (48), a front sealing door (7), a back sealing door (25), a branch flue (10), a bottom flue (12) and a main flue (6), comprising a first preparation chamber (3) for coaling, a preheating segment (50), a carbonization segment (51), a coke dry quenching segment (52), and a second preparation chamber (23) for coke outlet; each part has different formation from the others, and are interconnected in series with the others; the sliding bed (37) for coaling and tamping coal material (44) passes through the abovementioned five segment in series in order to coke.Type: ApplicationFiled: March 7, 2011Publication date: March 14, 2013Applicant: Guizhou Sunny Clean Energy Technology Development Co., Ltd.Inventors: Qin Xu, Congjun Wang