A.Savin, R. Grimberg, S.M.Chifan, O.Mihalache, Method and transducer for determination of thickness of metallic coatings on wires, Romanian Patent nr.112917/1998.

R. Grimberg, A.Savin, S.Chifan, Pick-up circuit and system for compensating the signal generated by a rotating magnetic field, Romanian Patent No. 113685/1998

A. Savin, R. Grimberg, S.Chifan, O.Mihalache, Transducer for the control of protective coatings on steel wires,  Application for patent No. C/492 (1996)

R. Grimberg, S.M.Chifan, Programmable three-phase sinusoidal generator, Romanian Patent No. 110743 C1 (1996)

R. Grimberg, A.Savin, A.Andreescu, S.Chifan, Transducer for the control of cylindrical conductive metallurgical products, Application for European Patent no. 954028116 (1995)

R. Grimberg, A.Savin, A.Andreescu, S.Chifan, Transducer for the control of conductive metallurgical products, Romanian Patent no. 1130613/1996

R. Grimberg, R.Plavanescu, A.Andreescu, A.Savin, Transducer for eddy current surface control, Romanian Patent no. 9960/1989

R. Grimberg, Valerian Palihovici – Analiza nedistructiva a metalelor Defectoscopie, Lucrari de Laborator, Editura Universitatii Tehnice Gh Asachi, Iasi, 2001,

Paul Doru Barsanescu, Amariei Nicusor, Valerian Palihovici, R. Grimberg, Mocanu Florentina, Popa Sorin Corneliu, Aignatioaie Mihail, Goanta Viorel, Dumitrache Louis, Cantemir Doru, Bejenariu Carmen, Stoian Adrian, Tensiuni Remanente, Ed. Gh. Asachi Iasi, 2003

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