1. Log on to Yahoo Japan website directly, enter "Japan Patent Office" and click to enter the website of Japan Patent Office;
2. Then click on the upper right side of the homepage of the website, click on the Chinese-Korean translation and search area (see Figure 1), and you can query the desired information;
3. The free service of the website of Japan Patent Office is not open every day, and the white part in the calendar is the open day (see Figure 2).