Inventor
L. Stephen Buchanan
Inventor
Santa Barbara, CA, US
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Cprimary
A61CDentistry69%
A61BDiagnosis6%
B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering6%
A61NElectrotherapy3%
B05CApparatus for applying fluent materials to surfaces, in general3%
B29CShaping or joining of plastics3%
C09DCoating compositions, e.g. paints, varnishes or lacquers3%
G09BEducational or demonstration appliances3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
10,779,920Multi-cannula negative pressure irrigation system202010,729,514Self-heating electric plugger/syringe needle for use in a root canal202010,543,060Fluted endodontic file202010,501,651Radio-opaque 3D printing ink201910,420,629Endodontic instruments with pilot tips and parabolic cutting flutes20199,750,582'Endodontic therapy system, apparatus and method making use of a disposable CT registration tray device with pre-set radiographic registration markers'20178,986,006'Dental obturator'20158,408,901'Variable land, multiple height flute contour design for endodontic files'20137,993,138'Apex locator for endodontic procedures'20117,942,673'Dental obturator'20117,695,191'X-ray imaging and positioner'20107,604,479'Tip wrench for ultrasonic dental tool'20097,448,867'Medical treatment apparatus'2008RE039174'Endodontic treatment system'20066,955,536'Motor control system for endodontic handpiece providing dynamic torque limit tracking of specific file fatigue'20056,722,882'Dental instruments for use with ultrasonic handpieces'20046,053,735'Root canal preparation method'20005,921,775'Endodontic treatment system'19995,897,316'Endodontic treatment system'19995,842,861'Endodontic treatment system'19985,836,764'Endodontic treatment system'19985,752,825'Endodontic treatment system'19984,836,780'Anti-curvature dental root canal shaping file'19894,708,651'Endodontic root canal file bending pliers'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2020Patents assigned to BUCHANAN L STEPHEN (13)· patent assignee history
1987–1989Based in Montecito, CA, US· patent location history
1998–2020Based in Santa Barbara, CA, US· patent location history
2004Patents assigned to EARTH CITY TECHNOLOGIES INC (1)· patent assignee history
2006Patents assigned to BUCHANAN LEONARD STEPHEN (1)· patent assignee history
2008–2020Patents assigned to ORMCO CORP (3)· patent assignee history
2020Patents assigned to DENTAL EDUCATION LABORATORIES INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BUCHANAN L STEPHENself | 13 | 1987–2020 |
| ORMCO CORP | 3 | 2008–2020 |
| BUCHANAN LEONARD STEPHENself | 1 | 2006 |
| DENTAL EDUCATION LABORATORIES INC | 1 | 2020 |
| EARTH CITY TECHNOLOGIES INC | 1 | 2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Santa Barbara, California, US | 22 | 1998–2020 |
| Montecito, California, US | 2 | 1987–1989 |