Kohei FURUKAWA, Kotaro MATSUMOTO, Hiroyuki OHISHI, Ryota ENDA and Yoshiko INOUE
In erosion control engineering field, various kinds of new techniques have
been developed and briskly put into practical uses. Among these techniques,
it is said that non]structural measures have been in demand lately. These measures
contain many kinds of techniques and the terminology gnon]structural measures"
that are still not clear. Therefore, in this study, various kinds of non]structural
measures which have been developed so far are reviewed, and the present technological
development measures are analyzed in relation to social demands. As a result,
practical needs on these measures, today and in the future, will be clarified.
This paper's distinctive feature is its analysis based on the quantity of patent
right registration, while in many preceding papers, major analyses used to be
conducted based on the quantity of academic papers. Additionally, the questionnaire
survey or the hearing investigation was executed to extract the problem that
the erosion and torrent control field had, and it listened to engineer's opinion
and manager's opinion at the technology development. From the result of this
investigation, it turned out to be felt that the entrepreneurial strategy and
the advantage of making to the patent are different.
Key wordsFnon]structural measures, a development trend, patent right registration, the questionnaire survey