This invention relates to an improved process for producing an improved dry cell/chargeable battery comprising steps of:- -pretreatment of electrodes, -irradiation of the electrodes with ions using plasma ion implantation chamber, and -coating of the irradiated electrodes with a paste of metal oxide. ...

This invention relates to a novel opto-electronic sizing device comprising of infra-red diode illuminating an object, a diaphragm with collimating apertures limiting diffraction of light from the object and a sensor being approached with such diffracted light to generate electrical power signal, which is transmitted...