Inventor · disambiguated record
Roger C. Helgeson
Also filed as: HELGESON ROGER C
4 granted patents·44 citations·filing 1987–1990
75Inventor score
Top patents by PatentIndex Score
4 records- 0185US4859606AMethod for detecting cations in a test sample utilizing chromogenic cryptahemispherandsTECHNICON INSTR·Filed 1987·Granted Aug 22, 1989·23 cites·6 claims
- 0270US4992381AMethod of detecting electrolytes in an aqueous test sample using chromogenic hemispherands and test device thereforTECHNICON INSTR·Filed 1987·Granted Feb 12, 1991·9 cites·15 claims
- 0363US5177221AChromogenic hemispherands and their preparationMILES INC·Filed 1990·Granted Jan 5, 1993·8 cites·9 claims
- 0433US5011924AChromogenic cryptahemispherands and their preparationTECHNICON INSTR·Filed 1989·Granted Apr 30, 1991·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →