FRAUNHOFER-GESELLSCHAFT Patent applications |
Patent application number | Title | Published |
20140132947 | MEASUREMENT OF A FIBER DIRECTION OF A CARBON FIBER MATERIAL AND FABRICATION OF AN OBJECT IN CARBON FIBER COMPOSITE TECHNIQUE - The fiber direction of a carbon fiber material of a test object is detected by means of the polarization direction of light reflected by the test object. If, for example, non-polarized light impinges upon carbon fibers, light reflected by the fibers is polarized in fiber direction. | 05-15-2014 |
20130136152 | PASSIVE TEMPERATURE SENSOR - A passive temperature sensor with cordless measurement signal transmission includes: a coupling element that is implemented to draw electric energy from a magnetic or electromagnetic alternating transmission field; an energy rendering element that is implemented to provide an energy supply signal based on the drawn electric energy; a temperature measurement circuit that is implemented to generate, when supplied with the energy supply signal, a sensor alternating signal whose frequency depends on an environmental temperature; and a switching element that is implemented to change, based on the sensor alternating signal, a physical characteristic allocated to the coupling element to obtain an impact on the alternating transmission field based on the sensor alternating signal. | 05-30-2013 |
20110168543 | Microwave-Assisted Synthesis of Perfluorophthalocyanine Molecules - Advantageous microwave-assisted methods for synthesis of fluorinated phthalocyanines are provided. The microwave-assisted methods offer enhanced yields, substantially eliminate reaction solvents, and facilitate purification relative to conventional synthesis techniques. Typical implementation involve a reaction mixture that includes perfluoro-phthalonitrile that is reacted in a vessel with application of microwave energy for a reaction period sufficient to yield a fluorinated phthalocyanine. The fluorinated phthalocyanines synthesized according to the disclosed microwave-assisted methods have wide ranging applications, e.g., corrosion-related applications, coating-related applications, catalysis, and the production of optical and electronic materials. | 07-14-2011 |