​Be careful -- Forrester named it and put it into an array and build a random access memory with it, but An Wang invented and patented basic technology we now call 'core' in 1955  2,708,722  (calling it `dynamic memory')​.   As I understand it (I'm old, but not that old so I can not speak from experience, as I was a youngling when this patent came about), Wang thought Forrester's use of his idea was great, but Wang's patent was the broader one. 

There is an interesting history of Wang and his various fights at: An Wang - The Man Who Might Have Invented The Personal Computer