抄録
For the past decade patent appl ication in the field of mechanical engineering has been almost constant in both the number and ratio in respect to the patent applications made in the entire industries field. The three major sectors of application have been 1) mechanical element, 2) combustion engines and 3) heat/venti lation techniques. The trend has been the same for the past decade. Then author proposes that the engineers should commit themselves more to practice the patent analysis in the field of their specialty.
