The phrase "asserted when the" is grammatically correct and can be used in written English.
It can be used in contexts where a statement or claim is being made contingent upon a specific condition or event.
Example: "The theory was asserted when the data was finally analyzed and confirmed."
Alternatives: "claimed when the" or "stated when the".
The Gingrich grandiosity was on display, King asserted, when the new frontrunner "compared his wife to Jacqueline Kennedy and Laura Bush and Nancy Reagan".
The gaps projected for the next two years, however, are projected to be bigger than Mr. Pataki had asserted when the Legislature overrode his budget.
The situation had been worsened, he asserted, when the Board of Education closed 84 elementary schools and 8 junior high schools between 1975 and 1982, in response to then-declining enrollments.
In 1901, shortly before the death of Queen Victoria, the radical writer William Digby looked back to the 1876 Madras famine and confidently asserted: "When the part played by the British Empire in the 19th century is regarded by the historian 50 years hence, the unnecessary deaths of millions of Indians would be its principal and most notorious monument". Who now remembers the Madrasis?
Malcolm Hoenlein, executive vice chairman of the Conference of Presidents of Major American Jewish Organizations, which represents some 51 leading Jewish organizations, has also asserted, "When the government of Egypt originally seized this property, that was clearly wrong.
But Israel tried that with Hezbollah in Lebanon and failed, leaving Hezbollah leaders to assert when the war was over that they had stood up to Israel.
In it Newton says he can't see any reason why the world would end before 2060, "it may end later, but I see no reason for its ending sooner", and explicitly states "this I mention not to assert when the time of the end shall be".
In predicting this he said, "This I mention not to assert when the time of the end shall be, but to put a stop to the rash conjectures of fanciful men who are frequently predicting the time of the end, and by doing so bring the sacred prophesies into discredit as often as their predictions fail".
Absence of arteriolosclerosis was asserted when none of the eight sections display hyaline deposits.
FCA did not disclose the software to regulators, the EPA asserted when it first announced its accusations.
Similarly, in one post the Fordham Foundation asserted, "When it comes to school boards, what matters most is the character of those who serve -- not how they were selected".
