Jurors in Middlesex County handed Johnson & Johnson a victory Wednesday when they returned a defense verdict in a lawsuit filed by a 58-year-old man who claimed he developed mesothelioma from long-term use of the company’s talc products.

After a half hour of deliberation, the six-member jury concluded the plaintiff failed to prove by a preponderance of the evidence that he was exposed to asbestos from Johnson & Johnson’s baby powder. The verdict came after four weeks of proceedings before Superior Court Judge Ana Viscomi.