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Chunwei
Chunwei Li, Shanghai CN
| Patent application number | Description | Published |
|---|---|---|
| 20090220668 | CLARIFIED TEA EXTRACT AND METHOD OF MAKING SAME - A method of making a clarified tea extract to reduce the cloudiness of a beverage containing the clarified tea extract by producing an aqueous tea extract that contains tea insolubles, adding a food-acceptable acid and a salt to the aqueous tea extract simultaneously and thereafter holding the aqueous tea extract with minimal agitation to produce a precipitate and clarifying the aqueous tea extract. Another method of making a clarified tea extract by adding a base to extraction water, contacting the base-containing extraction water with a tea source to produce an aqueous tea extract, adding a food-acceptable acid to the aqueous tea extract, and thereafter holding the aqueous tea extract with minimal agitation to produce a precipitate and clarifying the aqueous tea extract. | 09-03-2009 |
Chunwei Liu, Beijing CN
| Patent application number | Description | Published |
|---|---|---|
| 20090046284 | SYSTEMS AND METHODS FOR FOOD SAFETY DETECTION - A method for detecting an ingredient in a food product includes establishing a spectral signature in a Raman spectrum obtained from a chemical substance; allowing a food sample solution obtained from a food product to come to contact with a first nano-scale surface structure in a first sensor, wherein the first sensor comprises a substrate, wherein the nano-scale surface structure comprises a plurality of columns over the substrate or a plurality of holes in the substrate; illuminating the food sample solution and the first nano-scale surface structure on the first sensor by a laser beam; scattering the laser beam by the food sample solution and the first nano-scale surface structure to produce a scattered light; obtaining a first Raman spectrum from the scattered light using a spectral analyzer; and identifying the spectral signature in the first Raman spectrum to determine the existence of the chemical substance in the food product. | 02-19-2009 |
| 20100070197 | SPECTRALLY SENSING CHEMICAL AND BIOLOGICAL SUBSTANCES - A sensor-network system for spectrally sensing a chemical or biological substance includes a plurality of probe assemblies that each includes a sensor comprising a nano structured surface, wherein the nano structured surface can adsorb molecules of a sample material captured adjacent to the sensor; a laser configured to emit a laser beam to illuminate the molecules adsorbed to the nano structured surface, and a spectrometer that can obtain spectral data from light scattered by the molecules adsorbed to the nano structured surface. A control center includes a computer storage configured to store spectral signatures each associated with a chemical or biological substance and a spectral analyzer that can determine a spectral signature matching at least one of the spectral signatures stored in the computer storage thereby to identify, in the sample material, the chemical or biological substance associated with the one of the spectral signatures. | 03-18-2010 |
| 20100085564 | SYSTEMS AND METHODS FOR DETECTING CHEMICAL AND BIOLOGICAL SUBSTANCES - A method for detecting an ingredient in a food product or detecting a disease includes allowing a food sample solution obtained from a food product or a body fluid from an individual to come to contact with a nano-scale surface structure in a sensor, wherein the nano-scale surface structure comprises a plurality of columns over a substrate or a plurality of holes in a substrate. The method includes illuminating the food sample solution or the body fluid on the nano-scale surface structure on the sensor by a laser beam; obtaining a Raman spectrum from the scattered light using a spectral analyzer; and identifying the spectral signature in the Raman spectrum to determine the existence of the chemical substance in the food product or identifying a disease in the individual. | 04-08-2010 |
Chunwei Liu, Suzhou Industrial Park CN
| Patent application number | Description | Published |
|---|---|---|
| 20110212512 | MONITORING NETWORK BASED ON NANO-STRUCTURED SENSING DEVICES - A monitoring network system for inspecting and controlling harmful substances includes probe assemblies that each includes a sensor comprising nano structured surfaces or nano particles in a solution, configured to adsorb molecules of a sample material captured adjacent to the sensor, a laser that can emit a laser beam to illuminate the molecules adsorbed to the nano structured surfaces, a spectrometer that can produce spectral data from light scattered by the molecules adsorbed to the nano structured surfaces, and a ID reader that can retrieve identification information about the sample material. A central office can determine a spectral signature matching spectral signatures stored in a database and to identify a harmful substance in the sample material. An alert and response system can send out an alert signal about the sample material when the harmful substance is identified in the sample material. | 09-01-2011 |
Chunwei Wang, Chupei TW
| Patent application number | Description | Published |
|---|---|---|
| 20120068943 | Method and Electronic Device for Retrieving Geographic Information - Various embodiments of a battery detector are provided. In one aspect, a method for capturing geographic information is applied to an electronic device in communication with the Global Positioning System (GPS). The method includes displaying map information on a touch screen provided by the electronic device; receiving a query condition according to an operation of a user; detecting via the touch screen a touch instruction performed by the user, with the touch instruction being corresponding to a selection range formed by at least one touch point, on the touch screen, selected by the user; querying a geographic database according to the query condition and the touch instruction; and displaying the query result on the touch screen. | 03-22-2012 |