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Inventor

Charles W. Lewis

Inventor
Van Nuys, CA, US

Overview

37→
Patents
1977–2017
Patent span
Performing operations
Primary field (CPC B)

Patents· 37 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B29Cprimary
B29CShaping or joining of plastics13%
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 sintering13%
Y10TTechnical subjects covered by former us classification10%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices8%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts7%
G05BControl or regulating systems in general7%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light6%
G06TImage data processing or generation, in general6%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form4%
G01FMeasuring volume, volume flow, mass flow or liquid level4%
PatentTitleYear
D0801457'Putter'20178,390,197'Long arc column gas discharge tube'20138,343,002'Rotating planetary gear carrier lubrication device'20136,855,385'PCB support plate for PCB via fill'20056,800,232'PCB support plate method for PCB via fill'20046,695,589'Control for an electric motor driven pump'20046,620,885'Copolymers of functionalized polyphenylene ether resins and blends thereof'20036,600,965'Method and apparatus for production of high resolution three-dimensional objects by stereolithography'20036,489,853'Low phase noise oscillator'20026,048,188'Stereolithographic curl reduction'20006,048,487'Recoating stereolithographic layers'20005,891,382'Recoating of stereolithographic layers'19995,870,307'Method and apparatus for production of high resolution three-dimensional objects by stereolithography'19995,772,947'Stereolithographic curl reduction'19985,748,051'Low phase noise UHF and microwave oscillator'19985,651,934'Recoating of stereolithographic layers'19975,447,822'Apparatus and related method for forming a substantially flat stereolithographic working surface'19955,345,391'Method and apparatus for production of high resolution three-dimensional objects by stereolithography'19945,273,691'Stereolithographic curl reduction'19935,258,146'Method of and apparatus for measuring and controlling fluid level in stereolithography'19935,184,307'Method and apparatus for production of high resolution three-dimensional objects by stereolithography'19935,174,931'Method of and apparatus for making a three-dimensional product by stereolithography'19925,137,662'Method and apparatus for production of three-dimensional objects by stereolithography'19925,133,987'Stereolithographic apparatus and method'19925,104,592'Method of and apparatus for production of three-dimensional objects by stereolithography with reduced curl'19925,059,359'Methods and apparatus for production of three-dimensional objects by stereolithography'19915,025,683'Orifice cup plug and seal assembly'19914,999,143'Methods and apparatus for production of three-dimensional objects by stereolithography'19914,700,923'Universal, portable, concrete slab base for pump jacks'19874,630,881'Immediately testable superconductor joint'19864,369,677'Transmission throttle pressure regulator assembly'19834,341,576'Fabricating laminated safety glass without an autoclave'19824,318,247'Plant supporting'19824,153,526'Laminated windshield with improved innerlayer'19794,109,055'Laminated windshield with improved innerlayer'19784,039,720'Laminated windshield with improved innerlayer'19774,010,311'Impact-resistant glass-polyesterurethane laminates'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1982Patents assigned to PPG INDUSTRIES INC (5)· patent assignee history
1977–1982Based in Pittsburgh, PA, US· patent location history
1982–2017Patents assigned to LEWIS CHARLES W (4)· patent assignee history
1987–2017Based in Vernal, UT, US· patent location history
1991–2003Patents assigned to 3D SYSTEMS INC (15)· patent assignee history
1991–1992Patents assigned to 3 D SYSTEMS INC (2)· patent assignee history
1991–2003Based in Van Nuys, CA, US· patent location history
1992–2000Based in Sherman Oaks, CA, US· patent location history
1998–2002Patents assigned to COMMUNICATIONS INC Z (2)· patent assignee history
2004–2013Based in Brighton, MI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
3D SYSTEMS INC151991–2003
PPG INDUSTRIES INC51977–1982
LEWIS CHARLES Wself41982–2017
3 D SYSTEMS INC21991–1992
COMMUNICATIONS INC Z21998–2002
Locations
LocationPatentsSpan
Van Nuys, California, US121991–2003
Sherman Oaks, California, US61992–2000
Pittsburgh, Pennsylvania, US51977–1982
Vernal, UT, US21987–2017
Brighton, MI, US22004–2013