Worse than useless in fact.
If I were hiring you I'd be concerned that you would use your patents against me if we have a dispute later on. Of course I can work out a special agreement with you where you agree to automatically license to me any patents you hold. Or... I could hire that other guy I like about the same as you but who doesn't come with any special legal issues to resolve.
As for be *impressed* by the fact that you hold your own patents, I wouldn't be, given some of the silly patents that I've seen. Holding a patent is not, per se, impressive. Inventing something truly novel *that actually gets built into products* is impressive. It's accomplishment, not the recognition of the patent office.
My father-in-law designed the gyros used to guide the Apollo spacecraft. That's impressive, but so far as I know he never applied for any patents on his work. One of my friends from MIT designed a flat transfer case that can be retrofitted onto a transverse mounted front wheel drive car designs to make them 4WD. It's in use on cars by several manufacturers. It's patented, but that's not what makes it impressive. What makes it impressive is that it is a practical solution that nobody every thought of before and other engineers are eager to use.
In fact, I might well terminate a hiring interview if you began describing patents *you personally* held relating to my work. Why? Becuase if I don't hire you I don't want you coming after me for triple damages for knowingly infringing on your patent. Even if that patent won't hold up to litigation, I don't need that problem. It's the same reason that I tell coworkers barging into my office with "Have you seen this patent" on their lips to STFU. If it's really novel then I'm unlikely to infringe on it. If it's a bad patent then I'm better off not knowing about it.