Inventive step
(Conclusion)
Inventive step is found.
It is not easily conceivable to apply well-known techniques which belong to a different technical field from the main cited invention to the main cited invention.
<Writer: Hideki Takaishi (Attorney-at-law licensed in Japan and California)>
https://www.ip.courts.go.jp/app/files/hanrei_en/675/002675.pdf