I grew up in a printer's house from my grandfather's generation. The registry records that it was founded in 1955 in the history of paper companies. In fact, while most of the work involved printing printed matter with a large printing press, personal computers appeared in the world and the printing business was becoming thinner. On the other hand, in addition to other general print jobs, there were other jobs involving patent-related documents. As a subcontractor of a large company, it is a project to proofread patent-related documents and prepare them as data or draw drawings. In 1998, as general printing jobs were shrinking, we continued our business focusing only on patent-related matters. When I was a university student, I helped with this patent-related documentation.

In 2013, amid rapid changes in the times, such a business finished its role and the printing company became a dormant company. In 2022, I myself retired from the company I worked for and started a patent office, changed the name of Sanko Printing from my grandfather to Sanko Asset Management Co., Ltd., re-entered as an intellectual property consulting company, and am involved in management.