John T. McSpadden
22Patents
17h-index
2Co-inventors
71Inventor score
Filing activity: Jan 10, 1948 → Apr 22, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4332561A | Dental file | Human Necessities | 72 | Expired |
| US4457710A | Dental instrument | Human Necessities | 65 | Expired |
| US4605025A | Powered dental flossing device | Human Necessities | 61 | Expired |
| US5882198A | Endodontic instrument having enhanced compliance at the tip | Human Necessities | 56 | Expired |
| US4353698A | Dental tool | Human Necessities | 55 | Expired |
| US5104316A | Endodontic instrument | Human Necessities | 48 | Expired |
| US4299571A | Dental file | Human Necessities | 39 | Expired |
| US6419488B1 | Endodontic instrument having a chisel tip | Performing Operations; Transporting | 39 | Expired |
| US5735689A | Endodontic dental instrument | Human Necessities | 37 | Expired |
| US5902106A | Endodontic dental instrument | Human Necessities | 35 | Expired |
| US5938440A | Endodontic instrument | Performing Operations; Transporting | 35 | Expired |
| US6293794A | Endodontic instrument having regressive conicity | Human Necessities | 31 | Expired |
| US5275562A | Method and material for obturating an extirpated root canal | Human Necessities | 31 | Expired |
| US5035617A | Endodontic instrument | Human Necessities | 28 | Expired |
| US4904185A | Dental instrument | Human Necessities | 27 | Expired |
| US5083923A | Method of obturating an extirpated root canal | Human Necessities | 26 | Expired |
| US5067900A | Apparatus and method for applying gutta-percha to a carrier | Human Necessities | 25 | Expired |
| US5980250A | Endodontic instrument | Performing Operations; Transporting | 11 | Expired |
| US6966774B2 | Endodontic instrument having notched cutting surfaces | Human Necessities | 10 | Expired |
| US7731498B2 | Endododontic file with multi-tapered flutes | Human Necessities | 7 | Active |
| US7223100B2 | Endodontic instrument having notched cutting surfaces | Human Necessities | 7 | Expired |
| US8182265B2 | Endodontic instrument with multi-tapered flutes | Human Necessities | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.