Home›Open Questions›Does priority for vulcanization belong to Charles Goodyear, who discovered the sulfur-and-heat process in 1839, or Thomas Hancock, who filed the first patent on it, in Britain, in 1843?Open QuestionsDoes priority for vulcanization belong to Charles Goodyear, who discovered the sulfur-and-heat process in 1839, or Thomas Hancock, who filed the first patent on it, in Britain, in 1843?Citation FormatsGeneral ReferenceGeneral Reference Citation TextTechnology and Engineering Atlas. "Does priority for vulcanization belong to Charles Goodyear, who discovered the sulfur-and-heat process in 1839, or Thomas Hancock, who filed the first patent on it, in Britain, in 1843?." Accessed August 30, 2026. https://dev-technology.interactiveatlas.org/open-questions-index/goodyear-or-hancock-who-gets-priority-for-vulcanization.Copy General ReferenceAPA StyleAPA Style Citation TextTechnology and Engineering Atlas. (n.d.). Does priority for vulcanization belong to Charles Goodyear, who discovered the sulfur-and-heat process in 1839, or Thomas Hancock, who filed the first patent on it, in Britain, in 1843?. Retrieved August 30, 2026, from https://dev-technology.interactiveatlas.org/open-questions-index/goodyear-or-hancock-who-gets-priority-for-vulcanizationCopy APA StyleBibTeXBibTeX Citation Text@misc{technologyandengineeringatlas-does-priority-for-vulcanization-belong-t, author = {Technology and Engineering Atlas}, title = {Does priority for vulcanization belong to Charles Goodyear, who discovered the sulfur-and-heat process in 1839, or Thomas Hancock, who filed the first patent on it, in Britain, in 1843?}, year = {2026}, url = {https://dev-technology.interactiveatlas.org/open-questions-index/goodyear-or-hancock-who-gets-priority-for-vulcanization}, note = {Accessed August 30, 2026} }Copy BibTeXOpen QuestionCross-Tradition ConnectionsSourcesComments (0)Reader Challenges (0 open reader challenges)Open QuestionGoodyear discovered the process first but did not patent it until 1844; Hancock examined a Goodyear sample, independently worked out the same process, and patented it in Britain weeks before Goodyear's own British filing. Neither side has ever produced evidence settling whether Hancock copied or independently rediscovered the process.What would resolve this Documentary evidence of exactly what Hancock learned from the Goodyear sample he examined, if any, versus what he derived independently, would settle whether his 1843 patent was an independent rediscovery or a derivative of Goodyear's work.OpenHistory of technologyWikipedia contributors, Vulcanization (Wikipedia)Cross-Tradition ConnectionsQuestion OnVulcanization, Methods Well-attested Source Vulcanization (Wikipedia)Wikipedia contributorstier 2SourcesVulcanization (Wikipedia)tier 2Wikipedia contributors, Wikimedia FoundationView the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0 open reader challenges)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.View At A Past YearThe atlas records no dated fact of its own for this entry, so there is no other year to choose.Show This Year