Japan claims that it never imposed an export ban on South Korea, explaining that export approvals now require a period of 4-5 weeks, or roughly the same period of time that has passed since the escalation of the diplomatic relations between Japan and South Korea. The new shipment is supposed to be sent out in 4 weeks, so Samsung, LG and SK Hynix might experience slight manufacturing schedule delays.
https://www.notebookcheck.net/Trade-war-journal-Japan-resumes-high-tech-chemical-exports-with-South-Korea.430260.0.html