Liufu
De Liufu, Palm Beach Gardens, FL US
Patent application number | Description | Published |
---|---|---|
20110010904 | Method for Manufacturing a Piezoelectric Ceramic Body - The present invention relates to a method of manufacturing a piezoelectric ceramic body and devices therefrom. The method comprises mixing a piezoelectric ceramic powder with a polymer binder and surfactant to form a slip mixture, casting the slip mixture into a mold and setting to the slip mixture in the mold to form a green body, cutting the green body to form a cut green body with an array of micron-sized ceramic elements and separation, and sintering the cut green body to form a sintered ceramic body. The sintered ceramic body can be further process to encasing in a polymer material to form a piezoelectric ceramic-polymer composite. The piezoelectric ceramic-polymer composite can be further processed to form devices such as acoustic transducers and sensors. | 01-20-2011 |
20120279865 | Touch Fingerprint Sensor Using 1-3 Piezo Composites and Acoustic Impediography Principle - Provided herein is a method of making an integrated circuit device using copper metallization on 1-3 PZT composite. The method includes providing an overlay of electroplated immersion of gold (Au) to cover copper metal traces, the overlay preventing oxidation on 1:3 PZT composite with material. Also included is the formation of immersion Au nickel electrodes on the 1-3 PZT composite to achieve pad metallization for external connections. | 11-08-2012 |
20140339459 | METHOD FOR MANUFACTURING A PIEZOELECTRIC CERAMIC BODY - The present invention relates to a method of manufacturing a piezoelectric ceramic body and devices therefrom. The method comprises mixing a piezoelectric ceramic powder with a polymer binder and surfactant to form a slip mixture, casting the slip mixture into a mold and setting to the slip mixture in the mold to form a green body, cutting the green body to form a cut green body with an array of micron-sized ceramic elements and separation, and sintering the cut green body to form a sintered ceramic body. The sintered ceramic body can be further process to encasing in a polymer material to form a piezoelectric ceramic-polymer composite. The piezoelectric ceramic-polymer composite can be further processed to form devices such as acoustic transducers and sensors. | 11-20-2014 |
De Liufu, Westfield, IN US
Patent application number | Description | Published |
---|---|---|
20080258101 | Compositions for high power piezoelectric ceramics - Piezoelectric ceramics of the formula Pb | 10-23-2008 |
20090159833 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - A class of ceramic compositions according to the formula Pb | 06-25-2009 |
20110204277 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - A class of ceramic compositions according to the formula Pb | 08-25-2011 |
20120292553 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - PZT ceramic materials having a base formula of: | 11-22-2012 |
De Liufu US
Patent application number | Description | Published |
---|---|---|
20140027665 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - A PZT-type piezoelectric ceramic material having a perovskite structure of the ABO | 01-30-2014 |
Shengcong Liufu, Shanghai CN
Patent application number | Description | Published |
---|---|---|
20110017275 | SOLAR PANEL BACK SHEET WITH IMPROVED HEAT DISSIPATION - The present invention discloses a solar panel comprising a front sheet, a back sheet and a photovoltaic circuit between the front and back sheets, wherein back sheet has an outer layer having a first surface and a second surface wherein the first surface faces the environment and has protrusions and the second surface is adjacent to the photovoltaic circuit. | 01-27-2011 |
20110268599 | PROCESS FOR PREPARING ZnAl TARGET MATERIAL AND ZnAl TARGET MATERIAL MADE THEREBY - The present invention provides a process for preparing a ZnAl alloy target material by providing a mixture of zinc powder and aluminum powder and obtaining a ZnAl alloy by sintering the mixture of zinc powder and aluminum powder by using a spark plasma sintering process. The present invention also describes a ZnAl alloy target material prepared by the above-described process. | 11-03-2011 |
Yewei Liufu, Shenzhen Guangdong CN
Patent application number | Description | Published |
---|---|---|
20150022113 | POWER FACTOR CONTROLLER BASED SINGLE-STAGE FLYBACK DRIVER AND LIGHT-EMITTING SYSTEM - Various embodiments relate to a power factor controller based single-stage flyback driver and a light-emitting system. The driver includes a primary-side circuit, a secondary-side circuit, a power factor controller, a current feedback circuit, a voltage feedback circuit, and a feedback signal generation circuit, wherein, in the secondary-side circuit, the output voltage is divided using a first voltage division resistor and a second voltage division resistor so as to provide the sampling of the output voltage to the voltage feedback circuit, and the first voltage division resistor or the second voltage division resistor is connected in parallel with a compensation branch having a capacitive reactance. | 01-22-2015 |
Yewei Liufu, Shenzhen CN
Patent application number | Description | Published |
---|---|---|
20150097493 | LOAD DRIVER AND LUMINAIRE INCLUDING THE LOAD DRIVER - Various embodiments relate to a load driver and a luminaire including the load driver. The load driver may include a voltage limiting circuit including a first polar capacitor and a second polar capacitor connected in inverse series, which are connected in parallel respectively with first and second current limiting elements, where the first and second current limiting elements limit the direction in which current flows so that current flows through different polar capacitors in positive and negative halves of a cycle of an alternating-current power supply. | 04-09-2015 |