William B. Johnson
84Patents
23h-index
36Co-inventors
88Inventor score
Filing activity: Jan 19, 1978 → Apr 17, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5947918A | Impact energy absorbing composite materials | Emerging Cross-Sectional Technologies | 62 | Expired |
| US4758156A | Tool for use in applying filler material to an endodontically prepared root canal | Human Necessities | 50 | Expired |
| US6074209A | Reduced torque endodontic file | Human Necessities | 49 | Expired |
| US4597695A | Face milling apparatus with eight-edged insert | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4894011A | Appliance for use in applying filler material to an endodontically prepared root canal | Human Necessities | 47 | Expired |
| US4885130A | Process for preparing self-supporting bodies and products produced thereby | Chemistry; Metallurgy | 45 | Expired |
| US6186705A | Cutting insert with chip control | Emerging Cross-Sectional Technologies | 44 | Expired |
| US6106296A | Method of endodontic preparation of a root canal and a file set for use in the method | Human Necessities | 40 | Expired |
| US5893683A | Indexable insert router | Emerging Cross-Sectional Technologies | 39 | Expired |
| US7238342B2 | Irrigation solution and methods for use | Human Necessities | 38 | Expired |
| US5118297A | Obturator body for use in filling an endontically prepared root | Human Necessities | 36 | Expired |
| US4240377A | Fluidized-bed compact boiler and method of operation | Chemistry; Metallurgy | 35 | Expired |
| US6293795A | Rotary handpiece for endodontic instrumentation | Human Necessities | 34 | Expired |
| US5085586A | Method and apparatus for installing a post in a tooth having an existing endodontic obturator therein | Human Necessities | 34 | Expired |
| US5833457A | Endodontic obturator | Human Necessities | 34 | Expired |
| US6540448B2 | Cutting tool with improved insert seat arrangement for indexable cutting inserts | Emerging Cross-Sectional Technologies | 34 | Expired |
| US9310340B2 | Resonant signal analysis-based inspection of rail components | Physics | 33 | Active |
| US5362319A | Process for treating fly ash and bottom ash and the resulting product | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4746292A | Tool and method for removing a parted endodontic file | Human Necessities | 31 | Expired |
| US5017334A | Process for preparing self-supporting bodies and products produced thereby | Chemistry; Metallurgy | 26 | Expired |
| US9389205B2 | Resonant signal analysis-based inspection of rail components | Physics | 26 | Active |
| US5876160A | Milling with insert having cutting-edge land of width increasing with depth of cut | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6048140A | Indexable insert router | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4411564A | Indexable cutting insert having radiused cutting edges | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5019539A | Process for preparing self-supporting bodies having controlled porosity and graded properties and products produced thereby | Chemistry; Metallurgy | 22 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.