I don't know. But the way to find out is www.USPTO.gov. The US Patent and Trademark Office. They allow searches by many criteria. It will take just a little work, but once you know how to search on USPTO, your power will increase.
Dupont
The patent was issued to Maurice A. McLean and Stephon D. Brown.
The U.S. Government owns the most expensive airplane, a warbird, probably a B-2 stealth bomber, but not 100% sure.
Selena Gomez does not own an airplane. She owns a car, but not an airplane. She travles on regular planes like us.
Flying- Machines,
Since Dupont invented it, one would suppose Dupont once owned the patent for it. However, it would have expired or lapsed many years ago because they started using it in the early 1930s. So, in other words, there is no patent for R-11.
The patent for Viagra in in the United States is owned by the company Pfizer. Pfizer is a pharmaceutical business that has continuously and exclusively maintained the patent for the Viagra brand name and the drug Sildenafil.
MDMA is not currently protected by a patent. The closest thing is Alexander Shulgin's 1959 patent on "4 alkyl dialkoxy N methyl phenethylamines and their pharamcologically acceptible salts," which has expired.
had to have been the inventor George Beauchamp in 1931 as he owns the patent for electric Guitars and single coil pickups.
Depends on the type. Having all wheels driven can't be patented, but you can patent various ways of transferring the power.
The Wright brothers wrote their 1903 patent application themselves, but it was rejected. In January 1904 they hired Ohio patent attorney Henry Toulmin, and on May 22, 1906, they were granted U.S. Patent 821393 for a "Flying Machine".In 1934