Inventor · disambiguated record
Trefford Simpson
Also filed as: SIMPSON TREFFORD · SIMPSON TREFFORD L
3 granted patents·3 citations·filing 2002–2016
51Inventor score
Technology areasA61B
Top patents by PatentIndex Score
3 records- 0135US6926407B2Apparatus and method for measuring a hue of a predetermined primary color in reflected lightFiled 2002·Granted Aug 9, 2005·3 cites·9 claims
- 0231US11317797B2Identification of contact lens wearers predisposed to contact lens discomfortUNIV INDIANA RES & TECH CORP·Filed 2016·Granted May 3, 2022·0 cites·24 claims
- 0331US8485016B2Method of calibrating a biometric deviceSIMPSON TREFFORD·Filed 2007·Granted Jul 16, 2013·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →