Just a note that I saw the term "deregulation era" for the first time just now. That does not mean it is the first time it has been used, just the first time I noted it.
It is used by New York Times business columnist Floyd Norris in a article called A Trading Tactic is Foiled, and Banks Cry Foul. Floyd pins the ear as lasting from 1980 until 2008.
Note this was an era where sometimes the Democrats controlled Congress, and sometimes Republicans. It covers the following presidencies: the last year of Jimmy Carter, then all of Reagan, Bush I, Clinton, and Bush II. As far as I know the most important piece of deregulation, the killing of the Glass-Steagall Act, was engineered by Bill Clinton and his Treasury Secretary Robert Rubin.