{"id":5241,"date":"2026-06-30T08:00:00","date_gmt":"2026-06-30T13:00:00","guid":{"rendered":"https:\/\/patents.harnessip.com\/?p=5241"},"modified":"2026-06-30T13:52:35","modified_gmt":"2026-06-30T18:52:35","slug":"june-30-2026-patent-of-the-day","status":"publish","type":"post","link":"https:\/\/patents.harnessip.com\/?p=5241","title":{"rendered":"June 30, 2026, Patent of the Day"},"content":{"rendered":"\n<p>On June 30, 1931, Julius A. Nieuwland received U.S. Patent No. 1,811,959 on Vinyl Derivatives of Acetylene and Method of Preparing the Same &#8212; neoprene.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-14.png\"><img loading=\"lazy\" decoding=\"async\" width=\"531\" height=\"825\" src=\"https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-14.png\" alt=\"\" class=\"wp-image-5243\" srcset=\"https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-14.png 531w, https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-14-193x300.png 193w\" sizes=\"auto, (max-width: 531px) 100vw, 531px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>The patent was assigned to du Pont, and the product was marketed under the mark DUPRENE.<\/p>\n\n\n\n<p>Julius was a professor at the University of Notre Dame and a priest of the Congregation of the Holy Cross. Born of Flemish parents in Hansbeke, Belgium, he immigrated with his family to South Bend, Indiana. He graduated from Notre Dame in 1899, studied for the priesthood and was ordained in 1903.  He received his Ph.D. from Catholic University in 1904.  He was inducted into the National Inventors Hall of Fame in 1996.<\/p>\n\n\n\n<p>Julius received a second patent the same day &#8212; U.S. Patent No. 1,812,542 on Catalytic process for the preparation of vinyl chloride:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-15.png\"><img loading=\"lazy\" decoding=\"async\" width=\"406\" height=\"640\" src=\"https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-15.png\" alt=\"\" class=\"wp-image-5244\" style=\"aspect-ratio:0.6422621548804904;width:491px;height:auto\" srcset=\"https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-15.png 406w, https:\/\/patents.harnessip.com\/wp-content\/uploads\/2026\/06\/image-15-190x300.png 190w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>On June 30, 1931, Julius A. Nieuwland received U.S. Patent No. 1,811,959 on Vinyl Derivatives of Acetylene and Method of Preparing the Same &#8212; neoprene. The patent was assigned to du Pont, and the product was marketed under the mark &hellip; <a href=\"https:\/\/patents.harnessip.com\/?p=5241\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5241","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=\/wp\/v2\/posts\/5241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5241"}],"version-history":[{"count":1,"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=\/wp\/v2\/posts\/5241\/revisions"}],"predecessor-version":[{"id":5245,"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=\/wp\/v2\/posts\/5241\/revisions\/5245"}],"wp:attachment":[{"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/patents.harnessip.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}