[nine_k]

The word "micron" is a common unit of measurement (μm). The trademark Micron™ only applies to microelectronic hardware, I suppose.

[kragen]

I hope you are correct, but probably continuing the discussion usefully would require doing a trademark search.

[achierius]

They also have a Micron trademark for software, as they sell some software packages. So it's really just a question of whether or not they notice and decide to go after you.