Japan
The Japanese patent office at the time of early aviation was . . . and the current one is . . . .
Japan procured a silk balloon from Yon in 1890 but didn't find it useful. Later they purchased a kite-balloon from Riedinger in Augsburg. They continued building their aeronautical forces and used them in the war with Russia. [1] In 1912 they reportedly bought a German airship, Parseval XIII.
JP is an abbreviation in this wiki referring to Japan.
Relevant aero inventors include Kumazo Hino and perhaps his coauthor Tomijiro Komuro.
Patents were granted by the Japanese government starting in 1885. "Invention Day is a day that Patent Monopoly Act which is the predecessor of the current Patent Law was promulgated on April 18, 1885 (year 18 of the Meiji Era) by Korekiyo Takahashi who served as the first Commissioner of the Japan Patent Office and others."[2]
Some searches are possible here: https://www4.j-platpat.inpit.go.jp/eng/tokujitsu/tjkt_en/TJKT_EN_GM201_KeywordSearchCount.action I didn't get any hits and may write to their helpdesk, which had an email address, not in front of me right now.
There is a history here: http://www.j-hangarspace.jp/japanese-aviation-history
Peter has ordered a book on Hino's time in Germany. this book is relevant but too expensive for the moment: https://www.amazon.com/s/ref=sr_gnr_fkmr0?rh=i%3Astripbooks%2Ck%3ASoredemo+Wa+Tobu&keywords=Soredemo+Wa+Tobu&ie=UTF8&qid=1537364431
References
Patents filed in Japan: Patent JP-1899-4164, Patent JP-1929-Vogt
Patents filed by persons from Japan: Patent JP-1899-4164, Patent US-1912-1037658, Patent US-1917-1228705
