On right: Namco president Masaya Nakamura (w/ glasses) & Atari Japan / Namco exec Hideyuki Nakajima, c. 1974
From Atari 50 - Namco DLC

seen from United States

seen from Germany
seen from France
seen from United States

seen from United States
seen from United States
seen from United States
seen from India

seen from Singapore
seen from United States
seen from United States

seen from Chile

seen from United States

seen from United States

seen from Singapore
seen from United Kingdom
seen from China
seen from United States
seen from India

seen from United States
On right: Namco president Masaya Nakamura (w/ glasses) & Atari Japan / Namco exec Hideyuki Nakajima, c. 1974
From Atari 50 - Namco DLC
1974 - Hideyuki Nakajima becomes president of Atari Japan 1974 - Namco--Masaya Nakamura president--buys Atari Japan 1978 - Nakajima made president of new US arm, Namco America 1985 - Namco America buys 60% of Atari Games from WB 1987 - Nakamura, frustrated w/ WB & Atari Games, sells 33% to a group of Atari Games employees, led by Nakajima 1987 - Nakajima resigns from Namco America, becomes president of Atari Games, which with no majority shareholder (Namco and WB each own 40%, employees have 20%) is effectively an independent company; Nakamura chairs its board 1987 - December: Atari Games, having failed to persuade Nintendo to grant it more favorable licensing terms for NES games, agrees to Nintendo's highly restrictive standard licensing terms 1987 - December 21: Nakajima founds Atari Games division Tengen (Tengen is a term from the Japanese board game Go; the name Atari also comes from Go) 1988 - Tengen tells US Copyright Office they need Nintendo's NES lockout chip copyright application, complete with the chip's source code, for a (nonexistent) ongoing legal case; under this false pretense, Tengen obtains the NES lockout chip source code from the Copyright Office 1988 - midyear: Nakamura's chairmanship of Atari Games ends 1988 - October: Tengen publishes Nintendo-licensed NES Pac-Man 1988 - December: Atari Games sues Nintendo for antitrust practices and announce they will release their own Tengen-branded NES carts, without Nintendo license 1989 - Tengen publishes Nintendo-unlicensed NES Pac-Man 1989 - November: Nintendo sues Atari Games for copyright and patent infringement of their NES lockout chip 1990 - Tengen releases Nintendo-unlicensed NES Ms. Pac-Man 1991 - April: District court preliminary injunction enjoins Atari Games from selling more unlicensed games prior to trial 1993 - November: Namco publishes their own (Namco Hometek) Nintendo-licensed NES Pac-Man 1994 - March: WB re-acquires controlling stake in Atari Games, subsequently consolidates its division Tengen into Time-Warner Interactive 1994 - June: Atari Games and Nintendo settle consolidated antitrust & copyright/patent infringement suit "with Atari Games paying Nintendo for damages and use of several intellectual property licenses" (Wikipedia) 1994 - July: Nakajima dies age 64
Further in this post.
Sources: Wikipedia, NY Times, GameFAQs