Miscellaneous history bytes found on the internet... until I get something better.
1969 -- Mostek founded as a spin-off of Texas Instruments.
1969 -- Busicom (Japan) asks Intel (USA) and Mostek (USA) to develop ICs for an electronic calculator. Intel completes the task with a single microprocessor chip, the 4004, which is used by Busicom for a desktop electronic calculator. Intel eventually buys back the rights to the 4004 for use in other devices. The modern-day Pentium IC links back to this early calculator chip. Mostek develops a complete "calculator-on-a-chip" which is used in Busicom's first handheld model, the Handy LE-120. Sold in 1971, it is the world's smallest handheld calculator for at least a year.
Merged with United Technologies in 1979.