Patents by Inventor Chih-Feng Wang
Chih-Feng 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: 20240131827Abstract: An impact-resistant polypropylene film and a method for producing the same are provided. The impact-resistant polypropylene film includes two outer layers and a middle layer. Each of the outer layers includes a propylene block polymer. The propylene block polymer includes a propylene monomer and an ethylene-propylene polymer, and the ethylene-propylene polymer is dispersed in the propylene monomer to form a sea-island structure. The sea-island structure includes a sea phase and an island phase, the propylene monomer is defined as the sea phase, and the ethylene-propylene polymer is defined as the island phase. The middle layer includes a propylene block polymer and an ethylene elastomer. Based on 100 parts by weight of the middle layer, a content of the propylene block polymer is 60 to 80 parts by weight, and a content of the ethylene elastomer is 20 to 40 parts by weight.Type: ApplicationFiled: December 29, 2022Publication date: April 25, 2024Inventors: TE-CHAO LIAO, CHING-YAO YUAN, CHIH-FENG WANG
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Publication number: 20240130022Abstract: This application relates to the field of lighting, and discloses an LED filament. The LED filament includes an LED chip unit, a light conversion layer, and an electrode. The light conversion layer covers the LED chip unit and part of the electrode, and a color of a light emitted by the LED filament after lighting is different from a color of the light conversion layer. This application has the characteristics of uniform light emission and good heat dissipation effect.Type: ApplicationFiled: September 18, 2022Publication date: April 18, 2024Inventors: Tao Jiang, Lin Zhou, Ming-Bin Wang, Chih-Shan Yu, Rong-Huan Yang, Ji-Feng Xu, Heng Zhao, Jian Lu, Qi Wu
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Publication number: 20240123713Abstract: A polyolefin film for an aluminum plastic film and an aluminum plastic film structure are provided. The polyolefin film includes a laminating film, a middle film, and a heat-sealed film. The middle film is disposed between the laminating film and the heat-sealed film. A lamination temperature of the laminating film ranges from 70° C. to 100° C. A material forming the laminating film is a first polyolefin material. The first polyolefin material has a modified group, and a structure of the modified group contains maleic anhydride. A material forming the middle film includes: 50 phr to 90 phr of a propylene block copolymer, 5 phr to 30 phr of an ethylene elastomer, and 5 phr to 20 phr of a propylene random copolymer.Type: ApplicationFiled: November 30, 2022Publication date: April 18, 2024Inventors: TE-CHAO LIAO, CHING-YAO YUAN, Chih-Feng Wang
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Publication number: 20240096873Abstract: Electrostatic discharge (ESD) structures are provided. An ESD structure includes a semiconductor substrate, a first epitaxy region with a first type of conductivity over the semiconductor substrate, a second epitaxy region with a second type of conductivity over the semiconductor substrate, and a plurality of semiconductor layers. The semiconductor layers are stacked over the semiconductor substrate and between the first and second epitaxy regions. A first conductive feature is formed over the first epitaxy region and outside an oxide diffusion region. A second conductive feature is formed over the second epitaxy region and outside the oxide diffusion region. A third conductive feature is formed over the first epitaxy region and within the oxide diffusion region. A fourth conductive feature is formed over the second epitaxy region and within the oxide diffusion region. The oxide diffusion region is disposed between the first and second conductive features.Type: ApplicationFiled: November 28, 2023Publication date: March 21, 2024Inventors: Chun-Chia HSU, Tung-Heng HSIEH, Yung-Feng CHANG, Bao-Ru YOUNG, Jam-Wem LEE, Chih-Hung WANG
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Publication number: 20230383113Abstract: A polypropylene film used in a cooking bag is provided. The polypropylene film used in the cooking bag is co-extruded to form a three-layered structure, and includes two outer layers and a middle layer arranged therebetween. Each of the outer layers includes a propylene random copolymer, and the propylene random copolymer is formed by aggregation of a propylene monomer and an ethylene monomer. The middle layer includes a propylene block polymer and an ethylene elastomer. The propylene block polymer includes a propylene monomer and an ethylene-propylene polymer, and the ethylene-propylene polymer is dispersed in the propylene monomer to form a sea-island structure. After the polypropylene film used in the cooking bag is placed in an environment having a temperature of 135° C. for 30 minutes, a haze of the polypropylene film used in the cooking bag is less than or equal to 10%.Type: ApplicationFiled: October 31, 2022Publication date: November 30, 2023Inventors: TE-CHAO LIAO, CHING-YAO YUAN, Chih-Feng Wang
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Patent number: 11738545Abstract: A breathable and waterproof membrane and a method for manufacturing the same, and a breathable and waterproof fabric are provided. The breathable and waterproof membrane is formed by stretching a polyolefin material. The breathable and waterproof membrane has a density ranging from 0.6 g/cm3 to 0.8 g/cm3. A plurality of micropores are formed on the breathable and waterproof membrane, and the plurality of micropores each has a size smaller than 500 nm. The polyolefin material includes: 60 wt % to 80 wt % of a first polypropylene resin, 15 wt % to 30 wt % of a second polypropylene resin, and 1 wt % to 10 wt % of inorganic particles. The second polypropylene resin is a modified polypropylene resin having a hydrophilic group. The second polypropylene resin is different from the first polypropylene resin.Type: GrantFiled: April 22, 2021Date of Patent: August 29, 2023Assignee: NAN YA PLASTICS CORPORATIONInventors: Te-Chao Liao, Ching-Yao Yuan, Wen-Jui Cheng, Chih-Feng Wang
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Patent number: 11661492Abstract: A white polyester film and a method for manufacturing the same are provided. The method for manufacturing the white polyester film includes: providing a recycled polyester material; physically regenerating a part of the recycled polyester material to form physically regenerated polyester chips having a first intrinsic viscosity; chemically regenerating another part of the recycled polyester material to form chemically regenerated polyester chips having a second intrinsic viscosity less than the first intrinsic viscosity; mixing white regenerated polyester chips, the physically regenerated polyester chips, and the chemically regenerated polyester chips according to a predetermined intrinsic viscosity so as to form a polyester masterbatch material; melting and extruding the polyester masterbatch material to obtain the white polyester film having the predetermined intrinsic viscosity.Type: GrantFiled: August 13, 2021Date of Patent: May 30, 2023Assignee: NAN YA PLASTICS CORPORATIONInventors: Wen-Cheng Yang, Te-Chao Liao, Chun-Cheng Yang, Chia-Yen Hsiao, Chih-Feng Wang
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Patent number: 11427390Abstract: A fruit and vegetable anti-fog packaging bag, which is produced with a polypropylene multilayer film, is manufactured by a high-speed bag making machine.Type: GrantFiled: November 8, 2019Date of Patent: August 30, 2022Assignee: NAN YA PLASTICS CORPORATIONInventors: Te-Chao Liao, Ching-Yao Yuan, Wen-Jui Cheng, Teng-Ko Ma, Chih-Feng Wang
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Publication number: 20220243030Abstract: A white polyester film and a method for manufacturing the same are provided. The method for manufacturing the white polyester film includes: providing a recycled polyester material; physically regenerating a part of the recycled polyester material to form physically regenerated polyester chips having a first intrinsic viscosity; chemically regenerating another part of the recycled polyester material to form chemically regenerated polyester chips having a second intrinsic viscosity less than the first intrinsic viscosity; mixing white regenerated polyester chips, the physically regenerated polyester chips, and the chemically regenerated polyester chips according to a predetermined intrinsic viscosity so as to form a polyester masterbatch material; melting and extruding the polyester masterbatch material to obtain the white polyester film having the predetermined intrinsic viscosity.Type: ApplicationFiled: August 13, 2021Publication date: August 4, 2022Applicant: NAN YA PLASTICS CORPORATIONInventors: Wen-Cheng Yang, Te-Chao Liao, Chun-Cheng Yang, Chia-Yen Hsiao, Chih-Feng Wang
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Publication number: 20220017709Abstract: An ultraviolet-absorbing polyester film and a method for manufacturing the same are provided. The ultraviolet-absorbing polyester film includes a physically recycled polyester resin and a chemically recycled polyester resin. The physically recycled polyester resin is formed by a plurality of physically recycled polyester chips. The chemically recycled polyester resin is formed by a plurality of chemically recycled polyester chips. The plurality of chemically recycled polyester chips further includes chemically recycled electrostatic pinning polyester chips. The chemically recycled electrostatic pinning polyester chips contain electrostatic pinning additives, and the electrostatic pinning additives are metal salts. Expressed in percent by weight based on a total weight of the ultraviolet-absorbing polyester film, a content of the electrostatic pinning additives is between 0.005% and 0.1% by weight. The ultraviolet-absorbing polyester film further contains an ultraviolet absorber.Type: ApplicationFiled: March 17, 2021Publication date: January 20, 2022Inventors: Wen-Cheng Yang, TE-CHAO LIAO, Chia-Yen Hsiao, Chih-Feng Wang
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Publication number: 20210331452Abstract: A breathable and waterproof membrane and a method for manufacturing the same, and a breathable and waterproof fabric are provided. The breathable and waterproof membrane is formed by stretching a polyolefin material. The breathable and waterproof membrane has a density ranging from 0.6 g/cm3 to 0.8 g/cm3. A plurality of micropores are formed on the breathable and waterproof membrane, and the plurality of micropores each has a size smaller than 500 nm. The polyolefin material includes: 60 wt % to 80 wt % of a first polypropylene resin, 15 wt % to 30 wt % of a second polypropylene resin, and 1 wt % to 10 wt % of inorganic particles. The second polypropylene resin is a modified polypropylene resin having a hydrophilic group. The second polypropylene resin is different from the first polypropylene resin.Type: ApplicationFiled: April 22, 2021Publication date: October 28, 2021Inventors: TE-CHAO LIAO, CHING-YAO YUAN, WEN-JUI CHENG, Chih-Feng Wang
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Patent number: 11021603Abstract: A white polyester film with a specific weight of 0.6-1.2 has a three-layered structure containing two outer layers (A) having a combined thickness taking up 2% to 30% of an overall thickness of the film and a middle layer (B), and having air-bubble cells in both the outer layers (A) and the middle layer (B). The outer layers (A) are formed from a polyester resin and inorganic particles. The middle layer (B) is formed of a polyester resin, modified polypropylene resin having a heat distortion temperature above 120° C. and a melt flow index (MI) of 0.2-1 g/10 minutes (at 230° C., with a load of 2.16 kg) via crosslinking with 0.1-3 wt % of peroxide with respect to the weight of the polypropylene resin, and inorganic particles.Type: GrantFiled: January 3, 2019Date of Patent: June 1, 2021Assignee: NAN YA PLASTICS CORPORATIONInventors: Te-Chao Liao, Wen-Cheng Yang, Chun-Che Tsao, Chia-Yen Hsiao, Chih-Feng Wang
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Publication number: 20210107266Abstract: An antibacterial plastic surface material is provided. The antibacterial plastic surface material includes a polyolefin substrate and an antifouling and antibacterial layer. A material of the polyolefin substrate includes 30 wt % to 60 wt % of linear polyethylene and 40 wt % to 70 wt % of propylene homopolymer. The antifouling and antibacterial layer is formed on the polyolefin substrate. The material of the antifouling and antibacterial layer includes at least 70 wt % of a fluorine-containing polymer.Type: ApplicationFiled: September 1, 2020Publication date: April 15, 2021Inventors: TE-CHAO LIAO, CHING-YAO YUAN, Chih-Feng Wang
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Patent number: 10845033Abstract: A white light illumination system is provided, including a light source unit, a beam splitter unit, a phosphor unit, a heat dissipation unit, and a diffuse reflective unit. The light source generating unit can generate an approximately collimated light beam along a predetermined transmission path. The beam splitter unit, the phosphor unit, and the diffuse reflective unit are disposed adjacent to one side of the light source unit. The beam splitter unit is located on the predetermined transmission path. The approximately collimated light beam is projected onto the beam splitter unit. The heat dissipation unit is disposed on the phosphor unit.Type: GrantFiled: February 21, 2020Date of Patent: November 24, 2020Assignee: TAIWAN COLOR OPTICS, INC.Inventors: Chih-Feng Wang, Yung-Peng Chang, Hsin-An Chen, Shih-Hsin Chang
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Publication number: 20200271303Abstract: A white light illumination system is provided, including a light source unit, a beam splitter unit, a phosphor unit, a heat dissipation unit, and a diffuse reflective unit. The light source generating unit can generate an approximately collimated light beam along a predetermined transmission path. The beam splitter unit, the phosphor unit, and the diffuse reflective unit are disposed adjacent to one side of the light source unit. The beam splitter unit is located on the predetermined transmission path. The approximately collimated light beam is projected onto the beam splitter unit. The heat dissipation unit is disposed on the phosphor unit.Type: ApplicationFiled: February 21, 2020Publication date: August 27, 2020Inventors: CHIH-FENG WANG, YUNG-PENG CHANG, HSIN-AN CHEN, SHIH-HSIN CHANG
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Publication number: 20200216661Abstract: A white polyester film, having a specific weight of 0.6-1.2, being a three-layered structure containing two outer layers (A) having a combined thickness taking up 2% to 30% of an overall thickness of the film and a middle layer (B), and having air-bubble cells in both the outer layers (A) and the middle layer (B), has the outer layers (A) formed from a polyester resin and inorganic particles; and has the middle layer (B) having a heat distortion temperature above 120° C. and a melt flow index (MI) of 0.2-1 g/10 min (at 230° C., with a load of 2.16 kg) via crosslinking modified with 0.1-3 PHR of phrperoxide, and inorganic particles.Type: ApplicationFiled: January 3, 2019Publication date: July 9, 2020Inventors: Te-Chao LIAO, Wen-Cheng YANG, Chun-Che TSAO, Chia-Yen HSIAO, Chih-Feng WANG
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Publication number: 20200198863Abstract: A fruit and vegetable anti-fog packaging bag, which is produced with a polypropylene multilayer film, is manufactured by a high-speed bag making machine.Type: ApplicationFiled: November 8, 2019Publication date: June 25, 2020Inventors: TE-CHAO LIAO, CHING-YAO YUAN, WEN-JUI CHENG, TENG-KO MA, Chih-Feng Wang
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Patent number: 10310252Abstract: The instant disclosure provides an optical wheel including a rotary light-transmittable substrate, an optical microstructure layer and an optical coating layer. The rotary light-transmittable substrate has a first surface and a second surface opposite to the first surface, and rotates around a central axis. The optical microstructure is disposed on the first surface or the second surface. The optical coating layer is disposed on the optical microstructure. At least a laser incident light beam is projected onto the first surface or the second surface of the rotary light-transmittable substrate for forming a laser emission light beam emitted from the second surface.Type: GrantFiled: November 11, 2017Date of Patent: June 4, 2019Assignee: TAIWAN COLOR OPTICS, INC.Inventors: Chih-Feng Wang, Yung-Peng Chang
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Publication number: 20190146207Abstract: The instant disclosure provides an optical wheel including a rotary light-transmittable substrate, an optical microstructure layer and an optical coating layer. The rotary light-transmittable substrate has a first surface and a second surface opposite to the first surface, and rotates around a central axis. The optical microstructure is disposed on the first surface or the second surface. The optical coating layer is disposed on the optical microstructure. At least a laser incident light beam is projected onto the first surface or the second surface of the rotary light-transmittable substrate for forming a laser emission light beam emitted from the second surface.Type: ApplicationFiled: November 11, 2017Publication date: May 16, 2019Inventors: CHIH-FENG WANG, YUNG-PENG CHANG
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Patent number: 9850158Abstract: A method for producing sheets of glass phosphor, including following steps of: taking glass powder, phosphor powder and a bonding agent to mix to form a mixture, wherein the glass powder and the phosphor powder are mixed first, and then the glass powder and the phosphor powder are mixed with the bonding agent; compressing the mixture to form a tablet; sintering the tablet to form a glass phosphor body; cutting the glass phosphor body to form at least one sheet body.Type: GrantFiled: May 25, 2016Date of Patent: December 26, 2017Assignee: TAIWAN COLOR OPTICS, INC.Inventors: Chih-Feng Wang, Yung-Peng Chang, Kuo-Yin Huang, Hsin-An Chen, Wei-Chih Cheng