ALEXANDRIA, Va., July 23 -- United States Patent no. RE50,503, issued on July 22, was assigned to SAMSUNG ELECTRONICS Co. LTD. (Suwon-si, South Korea).
"Master-slave flip flop" was invented by Min Su Kim (Hwaseong-si, South Korea) and Dae Seong Lee (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A master-slave flip flop includes a master latch and a slave latch which are sequentially disposed on a substrate in a first direction. The master latch includes a first NMOS transistor and a first PMOS transistor each gated by a first clock signal. The first NMOS transistor and the first PMOS transistor share a first gate line extending in a second direction intersecting with the first direction. ...