Inventor · disambiguated record
Shoichi Sugiyama
Also filed as: SUGIYAMA SHOICHI
3 granted patents·21 citations·filing 1991–2001
67Inventor score
Files withRICOH KK3
Top patents by PatentIndex Score
3 records- 0154US6569590B2Master batch pigment, toner including the master batch pigment and method for manufacturing the tonerRICOH KK·Filed 2001·Granted May 27, 2003·6 cites·32 claims
- 0250US5188881AThermosensitive stencil paperRICOH KK·Filed 1991·Granted Feb 23, 1993·13 cites·10 claims
- 0330US5219637AThermosensitive stencil paperRICOH KK·Filed 1992·Granted Jun 15, 1993·2 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Shoichi Sugiyama files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →