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Chih-Yao
Chih-Yao Chan, Tainan TW
| Patent application number | Description | Published |
|---|---|---|
| 20100170786 | REFURBISHED SPUTTERING TARGET AND METHOD FOR MAKING THE SAME - A method for making a refurbished sputtering target has steps of providing a spent target with a backside, an eroded side and a rim; mechanically pre-treating the backside of the spent target; applying powder material that has the same composition as the spent target to form a powder-filled layer; and sequentially pre-pressing and sintering the spent target with the powder-filled layer to obtain the refurbished sputtering target. Therefore, a percentage of the spent target is reduced by mechanically treating the backside of the spent target, so the refurbished sputtering target has a consistent quality. | 07-08-2010 |
Chih-Yao Chang, Tu-Cheng TW
| Patent application number | Description | Published |
|---|---|---|
| 20110006848 | AMPLIFIER CIRCUIT - An amplifier circuit includes three amplifier units connected in series. The first amplifier unit includes an input connector for inputting signals and a first transistor amplifier module connected to the input connector. The second amplifier unit includes a notch-filter circuit, a main filter circuit and a second transistor amplifier module. The notch-filter circuit allows only signals in a predetermined frequency to be transmitted from the first transistor amplifier module to the second transistor amplifier module and amplified. The main filter circuit filters signals in frequencies different from the predetermined frequency. The third amplifier unit includes a third transistor amplifier module and an output connector for outputting amplified signals. | 01-13-2011 |
Chih-Yao Chang, Taichung City TW
| Patent application number | Description | Published |
|---|---|---|
| 20090159219 | Cordless window blind structure - A cordless window blind structure is provided. A movable seat having a pulley block and a cord-winding assembly is disposed within a head rail of the cordless blind. The pulley block is connected to a lift cord wound through a first positioning element, so as to control the opening and closing of a blind body. And the cord-winding assembly has a cord winder attached to one end of a retrieving cord and a torsion spring. The other end of the retrieving cord is fastened either on the head rail, the movable seat, a second positioning element, or an end cap. The structure of the second positioning element is resembled to the first positioning element. By taking one end of the retrieving cord as a pivot, the movable seat moves laterally therealong the head rail by a restoring force generated through the torsion spring. | 06-25-2009 |
Chih-Yao Wu, Taipei TW
| Patent application number | Description | Published |
|---|---|---|
| 20100059063 | Long acting germicidal condom and manufacture procedure - The present invention is to provide a long-acting germicidal condom and manufacture procedure. A long acting germicidal condom comprises a sheath ( | 03-11-2010 |