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公开(公告)号：US12025577B2
公开(公告)日：2024-07-02
申请号：US18184355
申请日：2023-03-15
发明人： S. M. Al-Moayid , Mohd. Shkir , Haitham Elhosiny Ali , Hamed Majdooa Algarni , Jagadeesha Angadi V , Mohd Ubaidullah , Abdullah M. Al-Enizi
CPC分类号： G01N27/121 , B01J6/008 , B01J19/0066 , B01J19/1862 , C01B32/182 , G01N27/125 , H01B1/04
摘要： The present invention generally relates to a system for preparing reduced graphene-cobalt chromate composite for humidity sensor applications comprises a first glass beaker for pouring 3-7 grams of sucrose; a preheated muffle furnace for heating the first glass beaker containing sucrose for 5-15 minutes at 450-500° C. in an oxygen environment and obtaining the black foam of rGO after hydrating the sugar; a second glass beaker for mixing 3-7 grams rGO, 3-7 grams carbamide, 3-7 grams cobaltous, and 3-7 grams chromium nitrate and dissolving with double-distilled water; and a magnetic stirrer for stirring the mixed solution for 450 minutes to generate a homogenous solution and burning the uniform mixture at 425° C. in the preheated muffle furnace for 20 minutes to obtain graphene-cobalt chromate composite.
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公开(公告)号：US20230356162A1
公开(公告)日：2023-11-09
申请号：US18345328
申请日：2023-06-30
发明人： Anuj KUMAR , Mohd Ubaidullah , S.M. Al-Moayid , Mohd. Shkir , Hamed Majdooa Algarni , Thamraa Alshahrani
CPC分类号： B01J6/008 , B01J19/126 , B01J19/02 , B01J19/0013 , B01J2203/00 , B01J2219/00141 , B01J2219/00076 , B01J2219/00065
摘要： The present invention generally relates to a microwave-assisted pyrolysis system comprised of a microwave chamber body (102); a black carbon platform (104) disposed inside the microwave chamber body for irradiating microwave radiation and absorbing microwave energy; a quartz microwave reactor (106) placed on the black carbon platform for receiving chemical precursor(s) and applying microwave irradiation for absorption of microwave energy thereby heating the black carbon platform for microwave-assisted pyrolysis of the received chemical precursor(s); a cooling unit (108) employed for regulating and maintaining a user-defined temperature level upon detecting the temperature inside the microwave reactor using a temperature sensor (110), if the temperature exceeds the optimum level, wherein the optimum temperature is defined on the type of precursors undergoing pyrolysis; and wherein if the heating temperature is raised extremely high, the cooling unit inside the microwave machine gets activated to bring down the temperature to the user-defined level.
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公开(公告)号：US20240262986A1
公开(公告)日：2024-08-08
申请号：US18163513
申请日：2023-02-02
发明人： Abdullah G. AL-SEHEMI , Ahmed A. AL-GHAMDI , Nikolay Todorov DISHOVSKY , Nikolay Todorov ATANASOV , Gabriela Lachezarova ATANASOVA , Irena Kirilova MIHAYLOVA , Petrunka Atanasova MALINOVA
CPC分类号： C08K13/02 , C08L9/06 , C08K2003/2296 , C08K3/30 , C08K5/09 , C08K2201/005
摘要： A composition of styrene butadiene rubber containing spinel type metal oxides and will find application for insulating layers and supports in flexible antennas that can be worn close to the human body without adversely affecting it. The composition contains spinel-type metal oxides, in which the ingredients per 100 mass parts of styrene butadiene rubber/SBR/are: zinc oxide from 1 to 5 mass parts, stearic acid from 1 to 2 mass parts, filler from 25 to 75 mass parts, vulcanization accelerator/TBBS/—from 1 to 1.5 mass parts, sulfur from 1.5 to 2.0 and the filler is spinel type metal oxides and is Zn0.53Co0.48Mn0.01Cr2O4. The spinel type of metal oxides has the following chemical composition in weight percentages: Cr—62, 10; Mn—0, 19; Co—16, 92; Zn—20, 79, and particle sizes range from submicron 0.2-0.5 μm to 2-3 μm.
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公开(公告)号：US20240155852A1
公开(公告)日：2024-05-09
申请号：US18053871
申请日：2022-11-09
发明人： Abdullah G. Al-Sehemi , Richard O. Ocaya , Fahrettin Yakuphanoglu , Ahmed A. Al-Ghamdi , Mohammed A. Assiri , Mehboobali Pannipara
CPC分类号： H01L51/4206 , H01L51/0003 , H01L51/0021 , H01L51/0026 , H01L51/441
摘要： The present disclosure provides a thin-film sensor including a top layer passivation including top electrical contacts; an active layer disposed under the top layer, the active layer including an active material; a bottom layer passivation disposed below the active layer and including bottom electrical contacts; and a semiconductor layer disposed around the active layer, such that the semiconducting layer sandwiches the active layer.
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公开(公告)号：US20240021975A1
公开(公告)日：2024-01-18
申请号：US17865661
申请日：2022-07-15
发明人： Abdullah G. Al-Sehemi , Ahmed A. Al-Ghamdi , Nikolay Todorov Dishovski , Nikolay Todorov Atanasov , Gabriela Lachezarova Atanasova
CPC分类号： H01Q1/273 , H01Q1/12 , A61N1/37229
摘要： A flexible wearable antenna intended for wireless communications applicable to medical telemetry. The antenna includes of radiating element fractal-based monopole antenna, made up of electrically mechanically connected fractal-based monopoles, connected to a modified coplanar waveguide transmission line with a conductor element connecting the coplanar waveguide ground planes and of the coplanar waveguide transmission line, wherein the coplanar waveguide center line is connected to the radiating fractal-based monopole and is located between the coplanar waveguide ground planes, wherein the small gaps are located between, the feed point is located between the coplanar waveguide center line and the conductor element, wherein a fractal monopole, coplanar waveguide transmission line and feed point are mounted on the flexible substrate, and the antenna attached to the human body 6 and is connected on both points by a wireless connection to an implanted medical device and/or is connected to a wearable communication device and/or is connected to an external communication device.
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6.发明公开公开(公告)号：US20230221273A1
公开(公告)日：2023-07-13
申请号：US18184355
申请日：2023-03-15
发明人： S.M. Al-Moayid , Mohd. Shkir , Haitham Elhosiny Ali , Hamed Majdooa Algarni , Jagadeesha Angadi V , Mohd Ubaidullah , Abdullah M. Al-Enizi
CPC分类号： G01N27/121 , G01N27/125 , B01J19/1862 , B01J19/0066 , B01J6/008
摘要： The present invention generally relates to a system for preparing reduced graphene-cobalt chromate composite for humidity sensor applications comprises a first glass beaker for pouring 3-7 grams of sucrose; a preheated muffle furnace for heating the first glass beaker containing sucrose for 5-15 minutes at 450-500° C. in an oxygen environment and obtaining the black foam of rGO after hydrating the sugar; a second glass beaker for mixing 3-7 grams rGO, 3-7 grams carbamide, 3-7 grams cobaltous, and 3-7 grams chromium nitrate and dissolving with double-distilled water; and a magnetic stirrer for stirring the mixed solution for 450 minutes to generate a homogenous solution and burning the uniform mixture at 425° C. in the preheated muffle furnace for 20 minutes to obtain graphene-cobalt chromate composite.
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公开(公告)号：US20190106553A1
公开(公告)日：2019-04-11
申请号：US15819273
申请日：2017-11-21
发明人： Abdullah G. AL-SEHEMI , Ahmed A. AL-Ghamdi , Nikolay Todorov Dishovsky , Nikolay Todorov Atanasov , Gabriela Lychezarova Atanasova
摘要： The subject matter of the present patent application constitutes an elastomer composition intended for embedding a compact antenna designed to be used and operated in close proximity with regard to the human body to build short-range wireless communication links.The elastomer composition for embedding a compact antenna is based on natural rubber and components whose quantities are expressed in parts in wt per 100 parts by weight of natural rubber (phr), namely: sulfur—1 to 2 phr; phenyl-trichloromethylsulfenyl-benzene sulfonamide—0.1 to 0.5 phr; diphenylguanidine—from 0.3 to 0.8 phr; tertiary butyl-benzothiazolyl-sulfenamide—from 1 to 2 phr; dimethylbutyl-phenyl-p-phenylenediamine—1.5 phr; polymerized trimethyl dihydroquinoline—1.5 phr; stearic acid—2.0 phr; zinc oxide—3.0 phr; rapeseed oil—15 to 30 phr; bis (triethoxysilylpropyl) tetrasulfide-silane—from 0.1 to 4.0 phr; 3-thiocyanato-propyl-triethoxy silane—from 2.0 to 6.0 phr; carbon black—5.0 phr; optionally silicon dioxide—from 10 to 50.0 phr, microcrystalline cellulose—from 20.0 to 60.0 phr. The composition of the invention is multilayer.The advantages that the composition intended for embedding a compact antenna provides are: high efficiency when the antenna is placed over or in close vicinity to a human body model or metal surface pattern, a low specific absorption rate SAR (intensity of absorbed radiation) with regard to a human body model when the antenna is placed over or in close proximity to a human body model.
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公开(公告)号：US20240149295A1
公开(公告)日：2024-05-09
申请号：US18053867
申请日：2022-11-09
发明人： Abdullah G. Al-Sehemi , H. Algarni , Fahrettin Yakuphanoglu , Ahmed A. Al-Ghamdi , Aysegul DERE , Mehboobali Pannipara
CPC分类号： B05D1/005 , B05C9/14 , B05C11/1044 , B05C13/02
摘要： A thin film coating apparatus is disclosed, including a sample holder rotatably configured in the apparatus. The sample holder is coupled to a motor configured to rotate the sample holder. The apparatus includes a heating chamber disposed around the sample holder. The heating chamber is configured to supply heat to a substrate loaded on the sample holder. The apparatus includes a top cover configured to selectively allow access to the substrate loaded on the sample holder. A controller is configured to: detect a speed of rotation of the sample holder; and operate the top cover to allow access to the substrate loaded on the sample holder when the detected speed of rotation of the sample holder is within a predefined range.
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公开(公告)号：US20240124324A1
公开(公告)日：2024-04-18
申请号：US18517104
申请日：2023-11-22
发明人： Mohd Ubaidullah , Anuj Kumar , Mohd. Shkir , Ala Manohar , S.M. Al-Moayid , Bidhan Pandit , Haitham Elhosiny Ali , Hamed Majdooa Algarni , Manish Gupta
IPC分类号： C02F1/00
CPC分类号： C02F1/003 , C02F2301/08
摘要： The present invention generally relates to a water purification device designed to operate primarily on gravitational force. The device comprises an inlet chamber (102) for storing surface water; and a filtration chamber (104) placed beneath the inlet chamber housing: a first filter made up of a 1:3 mixture of zeolite and acid-fractionalized activated charcoal, supported on a cotton bed; a second filter (104B) consisting of powdered eggshell membrane mixed with zeolite and Fe3O4 nanoparticles in a 5:3:1 ratio; and a third filter (104C) composed of a mixture of eggshell membrane powder, zeolite, Fe3O4, and AgNO3 nanoparticles, all supported on a cotton bed in a 5:3:1:1 ratio; and an outlet (106) adjusted at a bottom section for collecting purified water. The surface water enters from a top of the filtration chamber and is subjected to gravitational force, leading it through the series of filters towards the outlet.
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公开(公告)号：US20230343960A1
公开(公告)日：2023-10-26
申请号：US17659997
申请日：2022-04-20
发明人： Abdullah G. Al-Sehemi , Aysegul Dere , Ahmed A. Al-Ghamdi , Fahrettin Yakuphanoglu , Mehboobali Pannipara
CPC分类号： H01M4/608 , H01M10/36 , H01M2004/027
摘要： In the present disclosure, a p-n organic battery comprising a p-type organic semiconductor and n-type organic semiconductor as active electrodes, anode and cathode current electrodes, separator and electrolyte and a method of fabricating the same is disclosed. The p-n organic battery has an p-type organic semiconductor separated from a n type organic semiconductor by an aqueous electrolyte solution, contained in an insulating vessel with suitable terminals (not shown) being provided in electric contact with the anode current electrode and the cathode current electrode. The aqueous electrolyte can comprise water, and a transition metal salt such as NiCl2, CuCl2 dissolved in the water.
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