Inventor

ISAGO KOHKI

JP2 patents

Patents

2 patents

US6527384B2Mar 4, 2003

Decolorizable ink composition and ink jet printer using the ink composition

RICOH KK17 citations75

US5164898ANov 17, 1992

System for determining hazardous substance exposure rate from concentration measurement and heart rate data

RICOH KK2 citations56