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Meijer, G.C.M. (author), Hilhorst, M.A. (author)
The invention relates to an electrical measuring device for performing an electrical -impedance measurement in a contactless manner. The measuring device comprises a measuring unit which is provided with the impedance (7,8) to be measured and a passive resonance circuit (4) connected thereto for generating a measuring signal to be wirelessly...
patent 2008
Meijer, J.A.M. (author), Geertman, R.M. (author), Oosterhof, H. (author), Witkamp, G.J. (author), Van Rosmalen, G.M. (author)
A process is presented in which anhydrous soda is crystallized and worked up to produce anhydrous soda crystals with a bulk density from 1300 to 1600 kg/m<3>. The process is characterized in that a solvent is used that allows the crystals to be formed and handled at atomspheric pressure in the presence of water without the monohydrate of soda...
patent 1999