I submitted a few papers while I was at a university. All major revisions were done while I was still there. Now I've left academia and joined an R&D company and working on totally unrelated subjects. The papers are now accepted with very minor revisions required. I understand that since the papers were done entirely during my position at the university, that's what I use as my affiliation.
But as for author biography, I would like to consider it a courtesy to indicate my current whereabouts. But I would like to do so only if it does not imply that my current company has any interest/invest, or endorses these papers. I wonder what the commonly accepted practice is, since my company could only advise me on the "affiliation" part.