The phrase "acknowledged since" is a correct and usable phrase in written English.
You can use it when you are referring to something that has been acknowledged for a period of time. For example, "The importance of education has been acknowledged since the dawn of time."
EADS has acknowledged since July that deliveries of the plane are at least six months behind schedule.
His Westernized son, Yeshi, has been acknowledged since he was 5 to be the reincarnation of his father's uncle Khyentse, a great Dzogchen master himself.
However, Tel Aviv's architectural heritage has been increasingly acknowledged since the late 20th century, and its aesthetics and architectural variety have attracted greater appreciation.
The sharp declines of the last several years did not accomplish that, he acknowledged, since they were followed by significant recoveries.
Department officials have acknowledged since 2009 that a secret, sensitive intelligence program is based on the law and have insisted that their statements about the matter have been accurate.
Those family-man stirrings will have to wait until next year, he acknowledged, since he will be touring much of the next six months to promote "Rhythm and Repose".
It does take a bit more work, he acknowledges, since he has to walk his fields and figure out what mix of products is needed to treat the issues.
Undoubtedly, objectification is a concept difficult to define, as Nussbaum also acknowledges, since it turns out to be 'slippery' and 'multiple' (Nussbaum 1995, 251).
Fair to acknowledge, since the early 2000s several jurisdictions have made some progress in this regard: governments have passed laws that oblige these private centers to get an authorization from educational authorities to operate.
While the Court toyed with "welfare rights" in cases like Shapiro v. Thompson (1969) and Goldberg v. Kelly (1970), it has (as Alito acknowledges) since steadily retreated from them.
Periodic risk reassessments at 8 week intervals were conducted by the PA with intervention women to identify any new risks that the participants had developed or were willing to acknowledge since the original screening.
