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Only utility patents (or the international equivalent) are listed, as a utility patent is a patent for an invention. Not all patents are for inventions. Other patent types include: design patents for the ornamental design of an object; plant patents for plant varieties; and reissue patents, where a
Edison invented a highly sensitive device, that he named the tasimeter, which measured infrared radiation. His impetus for its creation was the desire to measure the heat from the solar corona during the total Solar eclipse of July 29, 1878. The device was not patented since Edison could find no practical mass-market application for it. [103]
Actual use of the invention was deemed adequate disclosure to the public. [13] The English patent system evolved from its early medieval origins into the first modern patent system that recognised intellectual property in order to stimulate invention; this was the crucial legal foundation upon which the Industrial Revolution could emerge and ...
The Patent Act of 1836 (Ch. 357, 5 Stat. 117) further clarified United States patent law to the extent of establishing a patent office where patent applications are filed, processed, and granted, contingent upon the language and scope of the claimant's invention, for a patent term of 14 years with an extension of up to an additional 7 years. [6]
A sampling of U.S. patents for inventions by George Westinghouse. Many of the same inventions were also patented in foreign countries, including Austria, Australia, Canada, Denmark, France, Germany, Great Britain, Spain, and Switzerland. Many other patents were filed in the names of his companies or various of his engineers.
Lewis Howard Latimer (September 4, 1848 – December 11, 1928) was an American inventor and patent draftsman. His inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for light bulbs, and an improved toilet system for railroad cars.
Poplawski patented his invention of the blender in 1922. [166] [167] 1919 Silica gel. Silica gel is a granular, porous form of silica made from sodium silicate. The synthetic route for silica gel was invented and patented in 1919 by chemistry professor Walter A. Patrick at Johns Hopkins University in Baltimore. [168] 1919 Toaster (pop-up)
An AI-powered toilet seat has been named by Time Magazine as one of the top 200 inventions of 2024. It optically scans a user’s stool and urine, to detect any concerning changes that might ...