|Patent ID||Title||Inventor(s)||Filing Date||Publication Date||Description|
|USA #5940068||Display controlling apparatus and control method thereof||Yoshihiko Hasegawa, Takashi Yamatani||1996/02/14||1999/08/17||NeoGeo video hardware, VRAM layout, methods for creating sprite effects with the scaling functions (used in World Heroes 2).|
|USA #5643083||Control device for game operation state data||Yoshihiko Hasegawa||1995/04/10||1997/07/01||MVS System ROM functions (game-specific parameters, play time stats and time keeping, etc.)|
|USA #D373149||Pad controller attachment for a CD ROM video game player||Eikichi Kawasaki||1994/12/08||1996/08/27||Design patent for Neo-Geo CD controller.|
|USA #D375765||Joystick attachment for a CD ROM video game player||Eikichi Kawasaki||1994/12/08||1996/11/19||Design patent for Neo-Geo CD joystick.|
|Europe #0429160A2||Memory cartridge for use with TV game machine||Yoshihiko Hasegawa||1990/03/06||1991/05/29||(simplified) AES cartridge overview|
|USA #5114157||Game machine having plural display panel units and plural memory cartridges||Toshihiko Kita||1990/06/11||1992/05/19||Explains the MVS (as it relates to having multiple games in one machine, note the 8 slots); uses a MV25TA-0 as the example cabinet.|
|Europe #0431723 A2||TV game machine||Yoshihiko Hasegawa||1990/04/20||1991/06/12||AES/Home system overview|
|Europe #0997172 A1||Game system, game device, and game method||Yoshinori Matsumoto, Takashi Nishiyama||1998/04/06||2000/05/03||Possible portable device linkup with MVS/AES/CD systems.|
|Europe #0883019 A1
|Shooting apparatus||Kenta Fujimoto, Kazukuni Hiraoka, Hamao Horiguchi, Kouichi Ishimoto, Hiroaki Kimura, Shigekazu Matsumoto||1997/02/18||1998/12/09||Neo Print cab description.|
|USA [#US6055000A]||Storage memory for images||Satoshi Okada||1998/05/28 (priority)||2000/04/25||An image storage memory apparatus comprises a first memory for separating an image of M by N pixels into a plurality of blocks, generating H pieces of sets making coded notation of the mutually different m by n kinds of colors into each set component ...|
Using a search SNK Corporation, SNK has 26 patents and patent applications registered. All are applied in Japan and few granted with US patent number.
TODO: It would be interested to list them all with a time axis with 4 dates of Priority, Filling, Publication and Grant. (Many of them aren't related to the NeoGeo).