Like Thomas Edison’s patent for the light bulb, we understand why one could argue that the Vanguard patent and philosophy shined a light through savings and investing for millions of people.

That resulted in a bulb that lasted more than 1,200 hours. Edison filed for a patent for his electric lamp on Nov. 4, 1879. It was granted on Jan. 27, 1880. “The electric light has caused me the ...

Does light lose energy ... filament for his new bulb, testing more than 6,000 plants to determine which material would burn the longest. Several months after the 1879 patent was granted, Edison ...

In 1841, Frederick de Moleyns (also in England) generated light by running electricity through powdered charcoal. He got the first patent for an incandescent bulb. But again, his bulb didn't last ...

Our Documents. "Thomas Edison's Patent Application for the Light Bulb (1880)." United States Patent and Trademark Office. "Patent Public Search Basic (PPUBS Basic)." Search for Shunpei Yamazaki.

Eureka, the light bulb — developed inseparably from observation. If patents are to mean anything, surely discoveries like Edison’s must be eligible. In 2019, on my watch, the U.S. Patent and ...

A recent report by Invent Together, an alliance working to close diversity gaps in invention and patenting, reveals a significant knowledge gap in patent awareness. Approximately 82.6 percent of ...

Buying a light bulb can be complicated. If you don't take the time to figure out what type of bulb you need, it may not match the color of the other bulbs in the room or even work in your fixture.