Assignee
HITACHI KEIYO ENG
JP·4 granted patents·105 citations·filing 1985–2001
Top patents by PatentIndex Score
4 records- 0191USD294029SPortable computerHITACHI KEIYO ENG·Filed 1985·Granted Feb 2, 1988·61 cites·1 claims
- 0282USD429401SKioskHITACHI KEIYO ENG·Filed 1999·Granted Aug 8, 2000·33 cites·1 claims
- 0351US7115039B2Contents distribution system for simulation ride system, distribution apparatus for ride contents administration center, simulation ride control apparatus and computer softwareHITACHI KEIYO ENG·Filed 2001·Granted Oct 3, 2006·2 cites·19 claims
- 0438US5307501AInsuring data security and requiring only the minimum necessary input operationsHITACHI KEIYO ENG·Filed 1992·Granted Apr 26, 1994·9 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when HITACHI KEIYO ENG files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →