"it seemed apparent" is correct and can be used in written English.
You could use it to describe a situation that is obvious and clear to someone, such as a conclusion you can draw from existing evidence. For example, "It seemed apparent from the lack of customers that the store was not doing well."
But even as its partners endorse changes to the firm's structure, it seemed apparent during the news conference that there was no clear designation within the firm of who has the authority to negotiate on behalf of the firm in its mounting legal problems.
It seemed apparent that Hundley has both a bruised ego and an injured elbow after hearing Piazza mentioned too often.
When Pettitte removed his cap, it seemed apparent that he had borrowed Clemens's hair stylist for his debut.
Still, it seemed apparent that Valentine was searching for something, anything, to divert the attention from Benitez.
He said it seemed apparent that Mr. Hodge wanted to "teach the controversy" of Dr. Duesberg's ideas, a controversy that he said AIDS researchers had resolved long ago.
It seemed apparent that someone was pushing the issue to try and keep the case going rather than withdraw the charges.
The 11th U.S. Circuit Court of Appeals departed from precedent in two other circuits and reversed, saying that "it seems apparent that organizing assistance can be a thing of value".
However, it seems apparent that whatever its precise role, the system encodes some kind of prediction error.
It seems apparent from the courts explanation of its IOLTA Rules that a lawyer who mistakenly uses an IOLTA account for money that could earn interest for the client would violate the Rule.
The trouble is that one of the reasons the BCC and its members are angry and upset is that it seems apparent to them that politicians have stopped listening to their opinions.
It seems apparent that one consequence of attempting to harmonise its regulatory capacity will be a greater dependence on foreign assistance (both technical and financial) for this process.
