I've been researching a company called
Visual Arts Production, an animation studio that did graphics work for Taito. I found
this rundown of Pinch-Punch (in Japanese) that might be of some help, though I think it's mostly just a summary of what's on the Pinch-Punch website.
Speaking of which,
if you keep reading, you'll find out that Pinch-Punch was the sound department of "company V."