As long as I am new and asking questions...

[Cystic]

HI! Say what is the US patent status of Pachinko mechanisms in the US?(Nishijin_A specifically)

[sharmoni]

Quick Google results:

Here's one from 2005 for a casino-type pachinko patent: (WO/2005/094954) PACHINKO STAND-ALONE AND BONUSING GAME WITH DISPLAYED TARGETS PLUS SEAL CARD GAME

Here's one for a Japanese pachinko from 1993 files by Japanese "inventors."
http://www.patentstorm.us/patents/005636837.pdf