Inventor · disambiguated record
Sachiko Ichikawa
Also filed as: ICHIKAWA SACHIKO
4 granted patents·61 citations·filing 1987–1991
78Inventor score
Technology areasG11B
Files withCANON KK4
Top patents by PatentIndex Score
4 records- 0182US4965153AOptical recording mediumCANON KK·Filed 1987·Granted Oct 23, 1990·28 cites·11 claims
- 0264US5026623AOptical recording mediumCANON KK·Filed 1990·Granted Jun 25, 1991·13 cites·14 claims
- 0358US5158859AOptical recording mediumCANON KK·Filed 1991·Granted Oct 27, 1992·11 cites·6 claims
- 0454US4871649AOptical recording medium and optical recording method using the sameCANON KK·Filed 1987·Granted Oct 3, 1989·9 cites·6 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →