Along with black bear, you can also get trichinosis parasites from eating mountain lion, grizzly, wild or domestic hogs, and walrus. Yes, walrus.
There are tables published online on how to kill the trich' cysts and eggs by freezing, calculated as temperature against time. Colder temps for shorter times, etc. BUT you gotta take into account that you never get a 100% kill and still risk your life counting on freezing. Getting the meat cooked to a proper internal temperature and held there for a certain amount of time is critical. I recommend you do some reading on the subject, including Joe Rogan's experience with getting the disease.
That being said, if you have an excess of the fat, I'd like to make a batch of soap with it and would gladly share the proceeds back with you!