The phrase "to have emphasized" is correct and usable in written English.
You can use it when you want to show that something has been highlighted or placed extra emphasis on. Example: His speech was designed to have emphasized the importance of voting.
Pterosaurs seem to have emphasized soaring and gliding during flight, but they also engaged in flapping flight.
The two regulators are said to have emphasized the importance of cooperation between the two agencies, Reuters writes.
Instead, Sigma seemed to have emphasized one or the other, depending on headquarters directives and the other pressures on it at various times.
Romanticism can generally be said to have emphasized the personal, the subjective, the irrational, the imaginative, the spontaneous, the emotional, and even the visionary and transcendental in works of art.
The first century of the new kingdom seems to have emphasized military operations in imitation of Assyria, and Urartu waged relentless warfare on its neighbours to the east, west, and north.
The North Koreans were also said to have emphasized to Mr. Richardson their security concerns and their desire for guarantees that the United States would not attack them, rather than asking for food, economic or energy assistance, the focus of their interests when he met with them in the 1990's.
Most of the reports of such endeavours to date have emphasized the gains to be had from innovative, but relatively low-tech changes to established processes.
Thinkers from Albert Einstein to Peter Drucker have emphasized the importance of properly diagnosing your problems.
The majority of the wind LCA publications to date have emphasized on the determination of the life cycle GHG emissions for select site-specific wind turbine installations.
Because we were graciously invited to describe our particular journey, we have emphasized references to our own work.
Without college degrees, none have found work, and they have emphasized to her the importance of unemployment benefits.
