Thousands of things are invented every year. You will have to define more closely what you wish to know about
The person who inventied gas was Ronan because he always farts
Sikorsky
Italy
Leo baekeland
Sony
Hobart Gilpot
*FACEPALM*
John Andrews.
The GM engineers.
17th century to the present day.
in the 1950's
Walter Frederick Morrison invented it.