Inventor · disambiguated record
Sandra K. Richmann
Also filed as: RICHMANN SANDRA K
5 granted patents·61 citations·filing 1991–1996
80Inventor score
Top patents by PatentIndex Score
5 records- 0168US5200034AUse of surfactants having an HLB less than 10 in the deinking of dry toner electrostatic printed wastepaperBETZ PAPERCHEM INC·Filed 1991·Granted Apr 6, 1993·27 cites·9 claims
- 0255US5248388AUse of surfactants having an HLB less than 10 in the deinking of dry toner electrostatic printed wastepaperBETZ PAPERCHEM INC·Filed 1992·Granted Sep 28, 1993·18 cites·13 claims
- 0344US5885413ADeinking wastepaper containing electrostatic printed ink using branched alcohol alkoxylate surfactantBETZDEARBORN INC·Filed 1996·Granted Mar 23, 1999·5 cites·9 claims
- 0441US5302242AProcess and composition for deinking dry toner electrostatic printed wastepaperBETZ PAPERCHEM INC·Filed 1992·Granted Apr 12, 1994·7 cites·8 claims
- 0535US5282997AProcess and composition for deinking dry toner electrostatic printed wastepaperBETZ PAPERCHEM INC·Filed 1992·Granted Feb 1, 1994·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →