P

Inventor

JOHNSON WILLIAM B

US85 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON WILLIAM B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JOHNSON WILLIAM B

19 patents
US5362319ANov 8, 1994

Process for treating fly ash and bottom ash and the resulting product

JOHNSON WILLIAM B59 citations96
US5118297AJun 2, 1992

Obturator body for use in filling an endontically prepared root

JOHNSON WILLIAM B59 citations96
US5085586AFeb 4, 1992

Method and apparatus for installing a post in a tooth having an existing endodontic obturator therein

JOHNSON WILLIAM B56 citations96
US4894011AJan 16, 1990

Appliance for use in applying filler material to an endodontically prepared root canal

JOHNSON WILLIAM B78 citations96
US4758156AJul 19, 1988

Tool for use in applying filler material to an endodontically prepared root canal

JOHNSON WILLIAM B75 citations96
US4746292AMay 24, 1988

Tool and method for removing a parted endodontic file

JOHNSON WILLIAM B63 citations96
US7270541B1Sep 18, 2007

Endodontic files having variable helical angle flutes

JOHNSON WILLIAM B20 citations93
US5346549ASep 13, 1994

Environmentally stabilized products formed from ash and papermill waste

JOHNSON WILLIAM B44 citations93
US5328367AJul 12, 1994

Method and apparatus for applying gutta percha to a carrier

JOHNSON WILLIAM B37 citations93
US5286423AFeb 15, 1994

Method of heat treating gutta percha based material to improve the characteristics thereof

JOHNSON WILLIAM B31 citations93
US5190702AMar 2, 1993

Method of making a mold for manufacturing dental appliances

JOHNSON WILLIAM B30 citations93
US5161973ANov 10, 1992

Tubular dental post

JOHNSON WILLIAM B26 citations93
US5098298AMar 24, 1992

Appliance and method of use for filling an endodontically prepared root canal

JOHNSON WILLIAM B41 citations93
US5089183AFeb 18, 1992

Method of manufacturing appliances for use in filling endodontically prepared root canals

JOHNSON WILLIAM B39 citations93
US4240377ADec 23, 1980

Fluidized-bed compact boiler and method of operation

JOHNSON WILLIAM B52 citations93
US9078722B2Jul 14, 2015

Multi-planar pre-curved rotary endodontic file

JOHNSON WILLIAM B13 citations84
US8714976B2May 6, 2014

Fatigue-resistant Nitinol instrument

JOHNSON WILLIAM B7 citations84
US8413330B2Apr 9, 2013

Longitudinally ground file having increased resistance to torsional and cyclic fatigue failure

JOHNSON WILLIAM B5 citations84
US8047842B2Nov 1, 2011

Reciprocal reverse rotation endodontic file

JOHNSON WILLIAM B11 citations84

LANXIDE TECHNOLOGY CO LTD

6 patents

INGERSOLL CUTTING TOOL

5 patents

GORE & ASS

3 patents

TULSA DENTAL PRODUCTS INC

2 patents

INT ELECTRONIC MACHINES CORP

2 patents

(unassigned)

2 patents

XU PING

1 patent

DENTSPLY RES & DEV

1 patent

DENTSPLY INT INC

1 patent

GORE ENTERPRISE HOLDINGS INC

1 patent

INGERSOLL MILLING MACHINE CO

1 patent

BRUNSWICK CORP

1 patent

STONE & WEBSTER ENG CORP

1 patent

DENTSPLY INTERNAT

1 patent

OUTDOOR INNOVATIONS L L C

1 patent

INT ELECTRONIC MACHINES CORPORATION

1 patent

DENTSPLY SIRONA INC

1 patent

Showing the top 50 of 85 patents by PatentIndex Score.