Patent of the Day: Color Difference Measuring Instrument

On this day in 1961 Richard S. Hunter and Clyde A. Lofland were granted the patent for COLOR DIFFERENCE MEASURING INSTRUMENT. U.S. Patent No. 3,003,388. It is a primary object of the invention to…


Patent of the Day: Steeping Tank for Breweries

On this day in 1890 Jacob F. Theurer was granted the patent for STEEPING TANK FOR BREWERIES. U.S. Patent No. 437,910. This invention relates to tanks for steeping hops. In a steeping-tank for…


Patent of the Day: Electrophotography

On this day in 1942 Chester F. Carlson was granted to the patent for ELECTROPHOTOGRAPHY. U.S. Patent No. 2,297,691. An object of the invention is to improve methods of photography and to provide…


Patent of the Day: Apparatus for Roasting Coffee

On this day in 1897 Beeston Tupholme was granted the patent for APPARATUS FOR ROASTING COFFEE. U.S. Patent No. 591,307. This invention relates to improvements in apparatus for treating coffee and…


Patent of the Day: Treatment of Hydrocarbon

On this day in 1949 Phillip M. Arnold was granted the patent for TREATMENT OF HYDROCARBONS. U.S. Patent No. 2,483,869. This invention relates to a process for removing ethylene from admixture with…


Patent of the Day: Electric Lamp and Holder for the Same

On this day in 1882 Thomas Edison was granted the patent for ELECTRIC LAMP AND HOLDER FOR THE SAME. U.S. Patent No. 265,311. In order to adopt a system of electric lighting for ordinary and domestic…


Patent of the Day: Interferometer

On this day in 1952 André Henri Mirau was granted the patent for INTERFEROMETER. U.S. Patent No. 2,612,074. The present invention relates to interferometers and other measurement apparatus (for…


PRECIPITATION OF ALUMINUM HYDROXIDE

Patent of the Day: Precipitation of Aluminum Hydroxide

On this day in 1953 Ralph W. Brown was granted the patent for PRECIPITATION OF ALUMINUM HYDROXIDE. U.S. Patent No. 2,653,858. The principal method used heretofore in the production of aluminum…


Electric Measuring Instrument

Patent of the Day: Electric Measuring Instrument

On this day in 1897 Elihu Thomson was granted the patent for ELECTRIC MEASURING INSTRUMENT. U.S. Patent No. 590,654. This invention relates to voltmeters and involves in its construction a fixed coil…


Patent of the Day: Method of Projecting Imitations of the Aurora Borealis

On this day in 1904 Joseph Menchen was granted the patent for METHOD OF PROJECTING IMITATIONS OF THE AURORA BOREALIS. U.S. Patent No. 770,766. This invention consists in representing upon screens,…


Patent of the Day: Process of Producing Fried Chicken Under Pressure

On this day in 1962 Harlan Sanders, also known as Colonel Sanders, filed the patent for PROCESS OF PRODUCING FRIED CHICKEN UNDER PRESSURE for Kentucky Fried Chicken Corporation. U.S. Patent No.…


Patent of the Day: Hydroscope

On this day in 1907 Guiseppe Pino was granted the patent for HYDROSCOPE. U.S. Patent No. 849,570. This invention has for its object a hydroscope for exploring and photographing the bottom of the sea…