| 1969 | Tokyo Metropolitan Excellent Products Selection Committee | Excellence Award: 3 works won |
| 1987 | JPC FIAR Design Contest | Minister of International Trade and Industry Award |
| 1987 | JPC FIAR Platinum and Gold Chain Competition | Grand Prize Winner |
| 1988 | JPC FIAR Platinum and Gold Chain Competition | World Gold Council Award |
| 1990 | JJA Contest, Chain Division | Grand Prize Winner |
| 1992 | JJA Contest, Chain Division | Excellence Award: 3 works won |
| 1995 | JJA Contest, Chain Division | Grand Prize Winner |
| 1995 | JJA Contest | Received the Director-General’s Award of the Small and Medium Enterprise Agency |
| 1998 | JJA Contest | Received the Governor of Tokyo Award and the Japan Chamber of Commerce and Industry President Award |
| 2000 | JJC Creative Writing Contest, Division 2 | Award for Excellence |
| 2002 | JJA Contest | Received the Director-General’s Award of the Small and Medium Enterprise Agency |
| 2004 | JJA Contest, Division I | Excellence Award Honorable Mention |
| 2004 | JJC Creative Writing Contest, Division 2 | Award for Excellence |
| 2005 | JJC Creative Writing Contest | Grand Prize Winner |