In history of logo Sony the interesting moment was only one — the very first a logo which now looks very lovely and ridiculously.
In 1960 the first step to that logo which the company now has has been made. The modern version has been developed in 1973, and the company management is not going to change anything in spite of the fact that to them offers on restyling or cardinal change regularly arrive. And they can be understood — laconic, very simple word Sony in this kind knows all world and has no, to word Sony — any claims.