U.S. Patent Act
..Part II. Patentabililty of Inventions and Grant of Patents
....Chapt. 10. Patentability of Inventions
Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title [35 USCS Sects. 1 et seq.].