Inventor · disambiguated record

Takafumi Tohyama

Also filed as: TOHYAMA TAKAFUMI

2 granted patents·0 citations·filing 1991–1994

29Inventor score

Technology areasB41M

Files withNIPPON SODA CO2

Top patents by PatentIndex Score

2 records

0126US5380887ADiphenylsulfone derivatives and heat sensitive recording materialsNIPPON SODA CO·Filed 1994·Granted Jan 10, 1995·0 cites·1 claims
0225US5340788ADiphenylsulfone derivatives and heat sensitive recording materialsNIPPON SODA CO·Filed 1991·Granted Aug 23, 1994·0 cites·1 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →