I will go back through my documents again, but I don't remember signing anything ceding my rights, and I wouldn't have signed any document containing such language. There was no contract regarding and design or product development work, and the founding documents didn't contain any language ceding my rights. There was an expressed (and witnessed by multiple other people, on multiple occasions) understanding with the founders/owners that I was taken on board specifically for the first piece of IP that I provided them, and that I was not taken on board as a designer/inventor. Mostly they got it into their heads that because I owned a small part of the company that I had a duty to provide them with additional designs without receiving any compensation for them other than when the ownership took a dispersal from the company.
I know a local patent lawyer that I can talk to, I've worked with him before, I will contact him for additional assistance.
Thanks.