https://patentbrief.org/company/syntex-usa-llc Plain-English explanations of patents assigned to Syntex USA LLC, newest first. en-us Mon, 15 Jun 2026 06:05:45 GMT https://patentbrief.org/patent/us/4522811/human-growth-hormone-protropin This patent describes a method to make anti-infective drugs called muramyldipeptides work better by injecting them separately but close in time with tiny fat bubbles called liposomes into an animal. Tue, 11 Jun 1985 00:00:00 GMT https://patentbrief.org/patent/us/4522811/human-growth-hormone-protropin