Q: I would like to know what patents are under the name of Dearman Systems LCC or tas.net or unity
A:
The ownership of a patent can change over time. The patent when it is issued can show the current assignee. However, the patent as issued does not get reprinted when the patent is assigned to another owner.
There is a USPTO database where patent owners can register the assignments and other legal actions with respect to a patent. In some cases there is a downside for failing to do so but it is not required. So the records may be incomplete. That said, it is the best place to start.
https://assignment.uspto.gov/patent/index.html#/patent/search
I suggest that you start here and a patent attorney can help you find other assets, perhaps by looking at WIPO or other multinational sites. The patent attorney can also explain blind spots of this system with respect to patent applications that have not published.
If you found this answer helpful, you may want to look at my answers to other questions about patent law are available at the bottom of my profile page at
https://lawyers.justia.com/lawyer/kevin-e-flynn-880338
Kevin E Flynn
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