Varistors based on nanocrystalline powders produced by mechanical grinding Grant US-6620346-B1 United States of America 16 Sep 2003
Voltage nonlinear resistor and lightning arrester Grant US-6100785-A United States of America 08 Aug 2000
Voltage nonlinear resistor and lightning arrester Application EP-0866474-A1 European Patent Office 23 Sep 1998
Protective component for an electrochemical accumulator and its manufacturing method Application EP-0732707-A2 European Patent Office 18 Sep 1996