Inventor · disambiguated record
Fumio Hama
Also filed as: HAMA FUMIO
4 granted patents·10 citations·filing 1985–1987
68Inventor score
Technology areasB41M
Files withKANZAKI PAPER MFG CO LTD4
Top patents by PatentIndex Score
4 records- 0142US4731353AHeat-sensitive recording materialKANZAKI PAPER MFG CO LTD·Filed 1987·Granted Mar 15, 1988·4 cites·6 claims
- 0239US4612557AHydroxydiphenyl sulfone derivative and heat-sensitive recording material using the derivativeKANZAKI PAPER MFG CO LTD·Filed 1985·Granted Sep 16, 1986·3 cites·2 claims
- 0332US4729984AHeat sensitive recording sheets containing sulfone derivativesKANZAKI PAPER MFG CO LTD·Filed 1986·Granted Mar 8, 1988·2 cites·3 claims
- 0430US4633277AHeat-sensitive recording materialKANZAKI PAPER MFG CO LTD·Filed 1985·Granted Dec 30, 1986·1 cites·3 claims
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