Inventor · disambiguated record
Lewis W. Chappel
Also filed as: CHAPPEL LEWIS W
3 granted patents·2 pending applications·233 citations·filing 2000–2003
78Inventor score
Top patents by PatentIndex Score
5 records- 0193US6513621B1Method of producing and making use of ear tips having a filled airtight chamberDOCTORS RES GROUP·Filed 2000·Granted Feb 4, 2003·134 cites·11 claims
- 0269US7041056B2Inflatable speculumsDESLAURIERS RICHARD J·Filed 2003·Granted May 9, 2006·57 cites·33 claims
- 0364US6520281B1Elastomeric anti-microbial stethoscope diaphragmDOCTORS RES GROUP·Filed 2000·Granted Feb 18, 2003·42 cites·14 claims
- 0436US2003069476A1Dilating inflatable speculumFiled 2001·Application pending·0 cites
- 0536US2002185331A1Tunable stethoscope head assemblyFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →