My professor laughed at all the research I did at my job...?

I think you should have asked him why he thought it was funny. He could be laughing for many reasons. Maybe he's just been turned down for a grant and he saw that you'd managed to get $100,000 of funding - that might raise a wry smile from plenty of people.

Unless he actually criticised your work then you can't read too much into a laugh.

1. You have no idea what made him laugh since you failed to ask. You don't get defensive! You ask a simple neutrally phrased question.

2. I once read a list of major research projects funded by National Institutes of Health. Laughed so hard I nearly fell out of my chair. It was a genuine ROTFLMAO moment (many-minutes-moment). Some of the ridiculous craparoonie which gets funded really is laughable, and the millions & tens of millions spent should turn any taxpayer into Complainer to Congress. But you have NO idea whether this is the case with your list. Or not! Now you'll never know whether the professor laughed because he found something offbeat, interesting, potentially valuable which has been off the radar. Or whether that was the Craparoonie Laugh.

Your post is very confusing. Do you have research grants from a university? Do you have a business idea based on work funded by a university? Are you currently a student? Undergraduate or graduate? What job do you have? Do you hold an official position on a research team? Why were you showing a professor your resume? Were you applying for a job, a TA-ship, a research position? What has your job got to do with your professor or class?