Assignee
Inventors
- Philip J. Angevine (73 patents)
- Thomas R. Stein (6 patents)
{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Upgrading residual oil", "item": "https://www.patentleaderboard.com/patent/4324645"}]}
Skip to contentUS Patent 4324645 · Granted Apr 13, 1982