Hello does anyone know the the name of a German ink company with the initials M J?

This is a very vague question as someone has mentioned it to me and I would like the find this ink for him as a present but I can't remember the name and because of the secrecy and distance I can't ask him again.

The J possibly may have been Jessen?

I'm sorry I'm so vague but I'm hoping someone may know? He did mention the company closed a few years ago?

Cheers Tom.