Patents by Inventor Tung-Sheng Shih
Tung-Sheng Shih 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: 8136416Abstract: A personal nanoparticle sampler is disclosed to include a pre-classifier, a nozzle, a connector and a final filter pack. The connector and the final filter pack respectively accommodate a particle-sizing filter and a final filter to collect nanoparticles smaller than a diameter. The pre-classifier removes large particles to avoid clogging of the connector. The nozzle raises the airflow velocity to reduce the cut-off diameter of the particle-sizing filter without increasing the total flowrate, allowing the personal nanoparticle sampler to be used with a personal sampling pump.Type: GrantFiled: October 6, 2008Date of Patent: March 20, 2012Assignee: Institution of Occupational Safety and HealthInventors: Shi-Nian Uang, Tung-Sheng Shih, Chuen-Jinn Tsai, Cheng-Han Wu
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Patent number: 8038777Abstract: An air sterilization device with low aerosol bounce includes an air conditioning pipe, a porous filter media, and a UV light generator. This porous filter media, it is secured on the fixing portion. This porous filter media has many irregularly distributed channels. The channel is coated with a coating layer having a thickness between 10 ?m to 1000 ?m sticking aerosols for avoiding bounce effect. The UV light generator can emit UV light to kill biological aerosols. It is suitable for long-term usage. So, the bounce effect of aerosols can be significantly reduced. The maintenance cost is low. The sterilization effect is excellent. Plus, the flow rate of the air conditioning system remains high.Type: GrantFiled: November 14, 2008Date of Patent: October 18, 2011Assignee: Institute of Occupational Safety and Health, Council of Labor Affairs, Executive YuanInventors: Chane-Yu Lai, Po-Chen Hung, Sheng-Hsiu Huang, Yu-Fang Ho, Cheng-Ping Chang, Tung-Sheng Shih, Tai-Shan Yu, Chi-yu Chuang
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Patent number: 7819727Abstract: The present invention is a push-pull ventilation hood having a push device to obtain a push air flow and a pull device to exhaust contaminant flow with an exhaust opening and the two devices properly coordinated with each other, wherein, when the push flow flows through a contaminant source, a contaminated flow of the push flow is exhausted through the exhaust opening. Based on the design process according to the present invention, a push-pull hood with the highest efficiency of push velocity can be designed and the push-pull hood can economically and effectively control the contaminant source.Type: GrantFiled: July 8, 2004Date of Patent: October 26, 2010Assignee: Institute of Occupational Safety and Health Council of Labor AffairsInventors: Rong Fung Huang, Yu-Kang Chen, Tung-Sheng Shih, Cheng-Ping Chang, Wen-Yu Yeh, Chun-Wan Chen, Shin Yi Lin, Shun-Yuan Jan
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Publication number: 20100267321Abstract: A biological safety cabinet (BSC) has an air curtain to isolate air inside and outside the BSC. A most preferable slight concave curtain of air can be obtained. With the curtain, neither contamination in the BSC leaks out nor outside contamination enters the BSC. Furthermore, no circulation is formed in the BSC by blowing the air curtain. Thus, the operator using the BSC and the product in the BSC are both well protected.Type: ApplicationFiled: June 22, 2007Publication date: October 21, 2010Applicant: Institute of Occupational Safety and Health, Council of Labor Affairs, Executive YuanInventors: Rong Fung Huang, Tung-Sheng Shih, Cheng-Ping Chang, Chun-Wan Chen, Chen-Hsiung Hung
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Patent number: 7631540Abstract: A gas sensor is disclosed, which includes two separate metal electrodes on a surface of a substrate and a semiconductor thin film deposited on the surface of the substrate and connecting the two metal electrodes. The semiconductor thin film contains zinc oxide or a mixed oxide of zinc and indium, and the zinc oxide or the mixed oxide of zinc and indium are in the form of nanowires which constitute a gas-sensing surface of the semiconductor thin film. The nanowires have a diameter of 50-900 nm. The present invention also discloses a method for detecting the presence of a NOx gas.Type: GrantFiled: September 14, 2007Date of Patent: December 15, 2009Assignee: Industrial Technology Research InstituteInventors: Miao-Ju Chueh, Pi-Guey Su, Yih-Shiaw Huang, I-Cherng Chen, Tung-Sheng Shih
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Publication number: 20090272202Abstract: A personal nanoparticle sampler is disclosed to include a pre-classifier, a nozzle, a particle-sizing filter pack and a final filter pack. The particle-sizing filter pack and the final filter pack respectively accommodate a particle-sizing filter and a final filter to collect nanoparticles smaller than a diameter. The pre-classifier removes large particles to avoid clogging of the particle-sizing filter pack. The nozzle raises the airflow velocity to reduce the cut-off diameter of the particle-sizing filter without increasing the total flowrate, allowing the personal nanoparticle sampler to be used with a personal sampling pump.Type: ApplicationFiled: October 6, 2008Publication date: November 5, 2009Applicant: Institute of Occupational Safety and HealthInventors: Shi-Nian UANG, Tung-Sheng Shih, Chuen-Jinn Tsai, Cheng-Han Wu
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Patent number: 7582146Abstract: A uniform aerosol deposit sampling device includes a first housing and a second housing. The first housing has an air inlet and a first chamber. The second housing has an air outlet, an second chamber, a filter holder and a flow guiding portion. The filter holder is provided for securing an air-penetratable supporting pad and a filter media. The flow guiding portion is a substantially conical and gradually narrowing. The flow guiding portion has a semi-conical angle ranged from 15 to 85 degrees. So, the flow guiding portion makes the entire air flow smooth and evenly distributed. The aerosols will be evenly distributed and uniformly deposited on the filter media. And, it is easy to evaluate the amount and composition of the aerosols.Type: GrantFiled: September 22, 2006Date of Patent: September 1, 2009Assignee: Institute of Occupational Safety and Health, Council of Labor Affairs, Executive YuanInventors: Chane-Yu Lai, Perng-Jy Tsai, Da Toung Tang, Tung-Sheng Shih, Hsin-Ying Lee, Wam Yu Lee
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Publication number: 20090162251Abstract: An air sterilization device with low aerosol bounce includes an air conditioning pipe, a porous filter media, and a UV light generator. This porous filter media, it is secured on the fixing portion. This porous filter media has many irregularly distributed channels. The channel is coated with a coating layer having a thickness between 10 ?m to 1000 ?m sticking aerosols for avoiding bounce effect. The UV light generator can emit UV light to kill biological aerosols. It is suitable for long-term usage. So, the bounce effect of aerosols can be significantly reduced. The maintenance cost is low. The sterilization effect is excellent. Plus, the flow rate of the air conditioning system remains high.Type: ApplicationFiled: November 14, 2008Publication date: June 25, 2009Inventors: Chane-Yu Lai, Po-Chen Hung, Sheng-Hsiu Huang, Yu-Fang Ho, Cheng-Ping Chang, Tung-Sheng Shih, Tai-Shan Yu, Chi-yu Chuang
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Patent number: 7537629Abstract: A porous metal denuder has a cascade impactor to collect aerosol particles of different diameters, two porous metal discs downstream to collect basic and acidic gases, respectively, and a final filter to collect particles smaller than the cut diameter of the last stage of the cascade impactor which will penetrate the two porous metal discs.Type: GrantFiled: March 24, 2006Date of Patent: May 26, 2009Assignee: Institute of Occupational Safety and Health, Council of Labor AffairsInventors: Tung-Sheng Shih, Chuen-Jinn Tsai, Cheng-Hsiung Huang
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Publication number: 20090095161Abstract: A porous metal denuder has a cascade impactor to collect aerosol particles of different diameters, two porous metal discs downstream to collect basic and acidic gases, respectively, and a final filter to collect particles smaller than the cut diameter of the last stage of the cascade impactor which will penetrate the two porous metal discs.Type: ApplicationFiled: March 24, 2006Publication date: April 16, 2009Applicant: Institute of Occupational Safety and Health, Council of Labor AffairsInventors: Tung-Sheng Shih, Chuen-Jinn Tsai, Cheng-Hsiung Huang
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Patent number: 7503842Abstract: An air curtain-assisted exhaust method and a device thereof are provided. Air curtain generators are disposed on a worktable to enclose an encircled area in the worktable. A receiving hood is disposed above the worktable, wherein the vertical lower part of the outer edge of the receiving hood completely covers the encircled area. Then, the air curtain generators are started to blow out air curtains toward an opening of the receiving hood, and the receiving hood is started to suck an air flow. A shielding space is defined by the air flow sucked by the receiving hood and the air curtains, so that the air curtains may guide a smoke generated inside the shielding space to the receiving hood to be exhausted, thereby achieving the effect of auxiliary exhaust, and may restrict the smoke in the shielding space to prevent the smoke from diffusing laterally.Type: GrantFiled: November 17, 2006Date of Patent: March 17, 2009Assignee: Acxing Industrial Co., Ltd.Inventors: Shuei-Yuan Lee, Pei-Hsin Pei, Shun-Chih Wang, Cheng-Ping Chang, Tung-Sheng Shih
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Publication number: 20080295616Abstract: A multi-stage horizontal elutriator includes a flow inlet, a flow outlet, a hollow container that is disposed between said flow inlet and said flow outlet. This hollow container has a guide-in portion, a first parallel plates set, a second parallel plates set, and a guide-out portion. The first plates set is different to the second plates set. So, the aerosol's falling distance can be shortened significantly. The relative culturable ratio and the survival efficiency for bioaerosols are both high. The structure is simple with low cost.Type: ApplicationFiled: December 27, 2007Publication date: December 4, 2008Inventors: Chane-Yu Lai, Wei-Ting Syu, Siou-Rong Li, Tai-Shan Yu, Yu-Fang Ho, Po-Chen Hung, Jei-Pai Chang, Tung-Sheng Shih
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Patent number: 7458284Abstract: A three-stage dust sampler makes use of a porous foam as the impactor substrates. The sampler includes an annular inlet which conforms to ISO/CEN/ACGIH inhalable sampling criteria, two impactor stages to classify thoracic and respirable particles and a final filter to collect respirable particles after the impactors. For 100 ppi polymer foam substrates, and a flow rate of 3.2 lpm, the collection efficiency curves of the thoracic and respirable dust matches ISO/CEN/ACGIH criteria when the jet-to-plate distance is 1.0. The cut-off aerodynamic diameter is 9.6 and 4.0 ?m for the first and second impactor stages, respectively, and ?{square root over (stk50)} is 0.39 for both stages. The collection efficiencies for solid particles is equal to that for liquid particles, indicating that there is no solid particle bouncing from the foam substrates.Type: GrantFiled: October 3, 2006Date of Patent: December 2, 2008Assignee: Institute of Occupational Safety and Health, Council of Labor AffairsInventors: Tung-Sheng Shih, Da-Toung Tang, Chuen-Jinn Tsai, Cheng-Sheng Chang
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Patent number: 7350396Abstract: A pulse-type gas concentration measurement system and a method of pulse-type gas concentration measurement in a specific environment. When the sensor is located at a specific position, a variable pulse-modulated voltage is sent to the sensor, so that the sensor outputs a first signal to the processing device. The processing device compares the first signal to the chemical matter characteristics signals to determine the composition and concentration of respective constituents in the gas, and determines a detection voltage according to the first signal. Then, a square-wave pulse with the detection voltage is sent intermittently to the sensor, so that the sensor outputs a second signal to the processing device. The processing device compares the second signal to the chemical matter characteristics signal to determine the concentration variation of each respective constituent of the gas.Type: GrantFiled: December 24, 2003Date of Patent: April 1, 2008Assignee: Industrial Technology Research InstituteInventors: Yih-Shiaw Huang, Miao-Ju Chueh, I-Cherng Chen, Tung-Sheng Shih
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Publication number: 20080072764Abstract: A uniform aerosol deposit sampling device includes a first housing and a second housing. The first housing has an air inlet and a first chamber. The second housing has an air outlet, an second chamber, a filter holder and a flow guiding portion. The filter holder is provided for securing an air-penetratable supporting pad and a filter media. The flow guiding portion is a substantially conical and gradually narrowing. The flow guiding portion has a semi-conical angle ranged from 15 to 85 degrees. So, the flow guiding portion makes the entire air flow smooth and evenly distributed. The aerosols will be evenly distributed and uniformly deposited on the filter media. And, it is easy to evaluate the amount and composition of the aerosols.Type: ApplicationFiled: September 22, 2006Publication date: March 27, 2008Inventors: Chane-Yu Lai, Perng-Jy Tsai, Da Toung Tang, Tung-Sheng Shih, Hsin-Ying Lee, Wam Yu Lee
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Patent number: 7318771Abstract: The present invention is a fume hood capable of exhausting contaminant, having an air pipe in a sash and a suction slot corresponding to the air pipe deposed at the front rim of the bottom surface to obtain an air curtain, where contaminant is efficiently prevented from leakage and energy is saved.Type: GrantFiled: July 19, 2005Date of Patent: January 15, 2008Assignee: Institute of Occupational Safety and Health, Council of Labor AffairsInventors: Rong Fung Huang, Yu-Kang Chen, Tung-Sheng Shih, Cheng-Ping Chang, Chun-Wan Chen, Yi-Ta Wu, Hung-Ta Chen
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Publication number: 20080006078Abstract: A gas sensor is disclosed, which includes two separate metal electrodes on a surface of a substrate and a semiconductor thin film deposited on the surface of the substrate and connecting the two metal electrodes. The semiconductor thin film contains zinc oxide or a mixed oxide of zinc and indium, and the zinc oxide or the mixed oxide of zinc and indium are in the form of nanowires which constitute a gas-sensing surface of the semiconductor thin film. The nanowires have a diameter of 50-900 nm. The present invention also discloses a method for detecting the presence of a NOx gas.Type: ApplicationFiled: September 14, 2007Publication date: January 10, 2008Applicant: Industrial Technology Research InstituteInventors: Miao-Ju Chueh, Pi-Guey Su, Yih-Shiaw Huang, I-Cherng Chen, Tung-Sheng Shih
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Publication number: 20070269349Abstract: A three-stage dust sampler makes use of a porous foam as the impactor substrates. The sampler includes an annular inlet which conforms to ISO/CEN/ACGIH inhalable sampling criteria, two impactor stages to classify thoracic and respirable particles and a final filter to collect respirable particles after the impactors. For 100 ppi polymer foam substrates, and a flow rate of 3.2 lpm, the collection efficiency curves of the thoracic and respirable dust matches ISO/CEN/ACGIH criteria when the jet-to-plate distance is 1.0. The cut-off aerodynamic diameter is 9.6 and 4.0 ?m for the first and second impactor stages, respectively, and ?{square root over (stk50)} is 0.39 for both stages. The collection efficiencies for solid particles is equal to that for liquid particles, indicating that there is no solid particle bouncing from the foam substrates.Type: ApplicationFiled: October 3, 2006Publication date: November 22, 2007Applicant: Institute of Occupational Safety and Health, Council of Labor AffairsInventors: Tung-Sheng Shih, Da-Toung Tang, Chuen-Jinn Tsai, Cheng-Sheng Chang
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Publication number: 20070113839Abstract: An air curtain-assisted exhaust method and a device thereof are provided. Air curtain generators are disposed on a worktable to enclose an encircled area in the worktable. A receiving hood is disposed above the worktable, wherein the vertical lower part of the outer edge of the receiving hood completely covers the encircled area. Then, the air curtain generators are started to blow out air curtains toward an opening of the receiving hood, and the receiving hood is started to suck an air flow. A shielding space is defined by the air flow sucked by the receiving hood and the air curtains, so that the air curtains may guide a smoke generated inside the shielding space to the receiving hood to be exhausted, thereby achieving the effect of auxiliary exhaust, and may restrict the smoke in the shielding space to prevent the smoke from diffusing laterally.Type: ApplicationFiled: November 17, 2006Publication date: May 24, 2007Applicant: ACXING INDUSTRIAL CO., LTD.Inventors: Shuei-Yuan Lee, Pei-Hsin Pei, Shun-Chih Wang, Cheng-Ping Chang, Tung-Sheng Shih
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Publication number: 20070021047Abstract: The present invention is a fume hood capable of exhausting contaminant, having an air pipe in a sash and a suction slot corresponding to the air pipe deposed at the front rim of the bottom surface to obtain an air curtain, where contaminant is efficiently prevented from leakage and energy is saved.Type: ApplicationFiled: July 19, 2005Publication date: January 25, 2007Inventors: Rong Huang, Yu-Kang Chen, Tung-Sheng Shih, Cheng-Ping Chang, Chun-Wan Chen, Yi-Ta Wu, Hung-Ta Chen