What person or group is the registered owner or registered assignee of the following design patents 8257475 9182080 9574710 10100980
I'm formalizing George White's comment as an answer since it is so useful. As George White points out, those are US utility patents, not design patents. Go to the USPTO Patent Assignment Search page, select "Look up by Patent Number" and type in the patent number (digits only). It's really easy. Looking at the first number you get the following result. You can scroll down to see the entire entry.