Inventor · disambiguated record
Isao Umezawa
Also filed as: UMEZAWA ISAO
5 granted patents·158 citations·filing 1989–1999
82Inventor score
Top patents by PatentIndex Score
5 records- 0191US6403607B1Sulfonamide derivatives and drugs containing the same as the active ingredientHIDAKA HIROYOSHI·Filed 1999·Granted Jun 11, 2002·102 cites·8 claims
- 0282US5081246ACompound having vessel smooth muscle relaxation activityHIDAKA HIROYOSHI·Filed 1989·Granted Jan 14, 1992·23 cites·2 claims
- 0372US5216150ADerivatives of isoquinoline (and naphthalene) sulfonamidesHIDAKA HIROYOSHI·Filed 1991·Granted Jun 1, 1993·16 cites·1 claims
- 0471US5245034ACompound having vessel smooth muscle relaxation activityHIDAKA KIROYOSHI·Filed 1992·Granted Sep 14, 1993·16 cites·2 claims
- 0535US5245050ADerivatives of physiologically active substance ml-236b and process for production thereofTOBISHI PHARMACEUTICAL CO·Filed 1989·Granted Sep 14, 1993·1 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →