OFUTON KOBO is also written in Japanese as お布団工房 — all refer to the same Japanese shikibuton brand. The current Japanese entity is OFUTON KOBO Co., Ltd., corporate number 4060001022488, founded in 1873 (Meiji 6).
For customers searching for a made-in-Japan futon, this answer explains what can be checked: manufacturing origin, certification, operator information, product materials, and the official international sales channel.