"made known to" is a correct and usable phrase in written English.
You can use it when something is communicated or revealed to someone else. For example, "The truth was eventually made known to the public."
Through the drawings his Milanese works were made known to the Florentines.
But Mr. Boehner's meeting was evidently made known to other House and Senate Republican leaders.
But it is unsettling to have your name and address made known to an accused murderer.
The positive results of the vetting process were made known to the league earlier this month.
"These facts were all made known to the AFL and Asada in 2013 during their investigation.
The final owner of the company was never made known to [Mr Mossack].
Moreover, their identities and seat numbers should be made known to crews.
Each new weapon that the U.S. introduced was made known to the world and generated its own special revulsion.
Surviving monasteries and temples, with their magnificent contents, were made known to the Western world in the 1930s.
Monetary gifts sent to charities or to a honeymoon fund can take time to be made known to you.
If it is within the frame of reglements I wish this may be made known to them".
