Inventor · disambiguated record
Ippei Sawayama
Also filed as: SAWAYAMA IPPEI
9 granted patents·378 citations·filing 1985–2000
90Inventor score
Files withCANON KK9
Top patents by PatentIndex Score
9 records- 0194US5428249APhotovoltaic device with improved collector electrodeCANON KK·Filed 1993·Granted Jun 27, 1995·133 cites·16 claims
- 0289US5863412AEtching method and process for producing a semiconductor element using said etching methodCANON KK·Filed 1996·Granted Jan 26, 1999·95 cites·40 claims
- 0382US6051116AEtching apparatusCANON KK·Filed 1998·Granted Apr 18, 2000·56 cites·13 claims
- 0478US6214636B1Photovoltaic device with improved collector electrodeCANON KK·Filed 1997·Granted Apr 10, 2001·46 cites·4 claims
- 0558US6491808B2Electrolytic etching method, method for producing photovoltaic element, and method for treating defect of photovoltaic elementCANON KK·Filed 1998·Granted Dec 10, 2002·13 cites·19 claims
- 0655US4926085AVibration wave motorCANON KK·Filed 1989·Granted May 15, 1990·18 cites·18 claims
- 0749US6114185AWelding process and photovoltaic deviceCANON KK·Filed 1998·Granted Sep 5, 2000·12 cites·17 claims
- 0845US6425325B1Offset printing method and offset printing apparatusCANON KK·Filed 2000·Granted Jul 30, 2002·2 cites·35 claims
- 0932US4709221ASheet coilCANON KK·Filed 1985·Granted Nov 24, 1987·3 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Ippei Sawayama 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 →