Inventor · disambiguated record
David B. Helphrey
Also filed as: HELPHREY DAVID B
4 granted patents·140 citations·filing 1982–1996
80Inventor score
Top patents by PatentIndex Score
4 records- 0190US6660233B1Analytical biochemistry system with robotically carried bioarrayBECKMAN COULTER INC·Filed 1996·Granted Dec 9, 2003·80 cites·12 claims
- 0270US4396288AControl of multi-position filter mechanism in an optical measuring systemBECKMAN INSTRUMENTS INC·Filed 1982·Granted Aug 2, 1983·29 cites·4 claims
- 0362US5447692AOn-line process flow and reaction monitorBECKMAN INSTRUMENTS INC·Filed 1994·Granted Sep 5, 1995·28 cites·17 claims
- 0427US4596462ASpectrophotometer purge apparatusBECKMAN INSTRUMENTS INC·Filed 1983·Granted Jun 24, 1986·3 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →