U is for what?

X in a circle is the Greek letter theta.

The Daughter knows that an R or a TM in a circle on a package means that somehow the design of the packaging has some intellectual property protection. Specifically, they mean trademarked or registered, respectively; in the United States, that’s handled by the US Patents and Trademark Office. And a C in a circle suggests copyright protection; in the US that’s a function of the Copyright Office.

But she asked me: what does that U in a circle mean on her bottle of ketchup Continue reading “U is for what?”