Individual holder
JOHNSON WILLIAM B
25 granted patents·3 pending applications·780 citations·filing 1978–2025
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
28 records- 0195US8714976B2Fatigue-resistant Nitinol instrumentJOHNSON WILLIAM B·Filed 2010·Granted May 6, 2014·7 cites·16 claims
- 0291US5362319AProcess for treating fly ash and bottom ash and the resulting productJOHNSON WILLIAM B·Filed 1993·Granted Nov 8, 1994·59 cites·23 claims
- 0391US4240377AFluidized-bed compact boiler and method of operationJOHNSON WILLIAM B·Filed 1978·Granted Dec 23, 1980·52 cites·55 claims
- 0490US9078722B2Multi-planar pre-curved rotary endodontic fileJOHNSON WILLIAM B·Filed 2012·Granted Jul 14, 2015·13 cites·5 claims
- 0588US7270541B1Endodontic files having variable helical angle flutesJOHNSON WILLIAM B·Filed 2006·Granted Sep 18, 2007·20 cites·7 claims
- 0687US5346549AEnvironmentally stabilized products formed from ash and papermill wasteJOHNSON WILLIAM B·Filed 1992·Granted Sep 13, 1994·44 cites·20 claims
- 0786US4894011AAppliance for use in applying filler material to an endodontically prepared root canalJOHNSON WILLIAM B·Filed 1988·Granted Jan 16, 1990·78 cites·16 claims
- 0885US8047842B2Reciprocal reverse rotation endodontic fileJOHNSON WILLIAM B·Filed 2008·Granted Nov 1, 2011·11 cites·6 claims
- 0985US4758156ATool for use in applying filler material to an endodontically prepared root canalJOHNSON WILLIAM B·Filed 1987·Granted Jul 19, 1988·75 cites·20 claims
- 1083US4746292ATool and method for removing a parted endodontic fileJOHNSON WILLIAM B·Filed 1987·Granted May 24, 1988·63 cites·6 claims
- 1176US12295805B2Endodontic instrument with enlarged chip space and reduced torque strengthJOHNSON WILLIAM B·Filed 2023·Granted May 13, 2025·0 cites·9 claims
- 1273US10136962B2Multi-planar pre-curved rotary endodontic fileJOHNSON WILLIAM B·Filed 2015·Granted Nov 27, 2018·1 cites·17 claims
- 1373US8413330B2Longitudinally ground file having increased resistance to torsional and cyclic fatigue failureJOHNSON WILLIAM B·Filed 2008·Granted Apr 9, 2013·5 cites·7 claims
- 1473US5118297AObturator body for use in filling an endontically prepared rootJOHNSON WILLIAM B·Filed 1991·Granted Jun 2, 1992·59 cites·14 claims
- 1573US5085586AMethod and apparatus for installing a post in a tooth having an existing endodontic obturator thereinJOHNSON WILLIAM B·Filed 1990·Granted Feb 4, 1992·56 cites·17 claims
- 1670US11628042B1Endodontic instrument with enlarged chip space and reduced torque strengthJOHNSON WILLIAM B·Filed 2022·Granted Apr 18, 2023·0 cites·6 claims
- 1769US8789444B2Longitudinally ground file having increased resistance to torsional and cyclic fatigue failureJOHNSON WILLIAM B·Filed 2013·Granted Jul 29, 2014·2 cites·2 claims
- 1864US5098298AAppliance and method of use for filling an endodontically prepared root canalJOHNSON WILLIAM B·Filed 1991·Granted Mar 24, 1992·41 cites·7 claims
- 1962US5328367AMethod and apparatus for applying gutta percha to a carrierJOHNSON WILLIAM B·Filed 1993·Granted Jul 12, 1994·37 cites·23 claims
- 2062US5089183AMethod of manufacturing appliances for use in filling endodontically prepared root canalsJOHNSON WILLIAM B·Filed 1991·Granted Feb 18, 1992·39 cites·5 claims
- 2159US2010003637A1Dental File with Improved Tip ConfigurationJOHNSON WILLIAM B·Filed 2008·Application pending·0 cites
- 2258US2025213325A1Endodontic Instrument With Enlarged Chip Space And Reduced Torque StrengthJOHNSON WILLIAM B·Filed 2025·Application pending·0 cites
- 2356US2012094252A1Reciprocal Reverse Rotation Endodontic FileJOHNSON WILLIAM B·Filed 2011·Application pending·0 cites
- 2455US5286423AMethod of heat treating gutta percha based material to improve the characteristics thereofJOHNSON WILLIAM B·Filed 1992·Granted Feb 15, 1994·31 cites·4 claims
- 2555US5190702AMethod of making a mold for manufacturing dental appliancesJOHNSON WILLIAM B·Filed 1991·Granted Mar 2, 1993·30 cites·4 claims
- 2653US4539939AFluidized bed combustion apparatus and methodJOHNSON WILLIAM B·Filed 1984·Granted Sep 10, 1985·12 cites·44 claims
- 2751US5161973ATubular dental postJOHNSON WILLIAM B·Filed 1991·Granted Nov 10, 1992·26 cites·1 claims
- 2844US5149268AMethod of filling an endodontically prepared root canalJOHNSON WILLIAM B·Filed 1991·Granted Sep 22, 1992·19 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →