Daguerreotype
Louis Daguerre, France, patent of 1839. The first practical photograph, then gifted to the world.
Overview
Daguerre patented his silvered-plate imaging process in England days before France bought it, releasing it freely everywhere else in 1839 in exchange for pensions. Exposures took minutes and portraits needed head clamps, but studios spread within years. Rival William Talbot's calotype patented in 1841 allowed paper negatives and unlimited copies, the eventual winner. The daguerreotype's sharpness remains breathtaking. The open French release seeded photography's explosive global start.
Related Patents
Roll Film
Eastman patented paper-backed then nitrocellulose roll film, freeing cameras from single glass plates. The 1888 Kodak, you press t...
Cinematograph
Auguste and Louis Lumiere patented their combined camera, printer, and projector in February 1895. The first public ticketed scree...
Xerography
Carlson, broke in a Depression-era patent office, worked kitchen-lab electrostatics for years, patenting xerography in 1942. Twent...
Charge-Coupled Device
Bell Labs' 1969 semiconductor shift-register invention, patented 1974, moved charge packets as memory then, quickly, as light sens...