Inventor

Alex D. Colvin

Inventor

Oak Park, MI, US

Overview

1983–2010

Patent span

Physics

Primary field (CPC G)

Patents· 19 as inventor

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

G01Nprimary

G01NInvestigating or analysing materials by determining their chemical or physical properties50%

F02DControlling combustion engines10%

G01FMeasuring volume, volume flow, mass flow or liquid level10%

F01NGas-flow silencers or exhaust apparatus for machines or engines in general7%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light7%

G01MTesting static or dynamic balance of machines or structures7%

F02BInternal-combustion piston engines3%

F15BSystems acting by means of fluids in general3%

G01RMeasuring electric variables3%

PatentTitleYear

7,805,986'Portable vehicle exhaust flow sensor'2010 7,568,383'Portable vehicle exhaust flow sensor'2009 7,197,866'Control approach for use with dual mode oxygen sensor'2007 6,781,389'Conductivity sensor for detecting conductivity of a fluid'2004 6,477,886'Apparatus for measuring the amount of air entrained in a fluid'2002 5,794,596'Method and system for predictably controlling air/fuel ratio'1998 5,531,105'Method and system for determining engine oil consumption'1996 5,456,124'Probe for exhaust gas sampling'1995 5,138,163'Direct sampling of engine emissions for instantaneous analysis'1992 5,129,257'System for measuring engine exhaust constituents'1992 5,117,680'Method and control circuit for measuring trace constituents in automotive engine exhaust'1992 5,106,481'Linear air/fuel sensor'1992 5,025,220'Continuous measurement of the absolute conductivity of a liquid'1991 5,014,011'Capacitance measuring apparatus with means for nulling the resistive component'1991 4,928,015'Measuring multicomponent constituency of gas emission flow'1990 4,801,805'Method of measuring multicomponent constituency of gas emission flow'1989 4,751,466'Instrument for on-line measurement of the absolute electrical conductivity of a liquid'1988 4,389,881'Method of measuring an air to fuel ratio'1983 4,372,155'Methods of monitoring a combustion system'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1996Patents assigned to FORD MOTOR CO (13)· patent assignee history

1983–2010Based in Oak Park, MI, US· patent location history

1998–2002Patents assigned to FORD GLOBAL TECH INC (2)· patent assignee history

2004–2010Patents assigned to FORD GLOBAL TECH LLC (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FORD MOTOR CO	13	1983–1996
FORD GLOBAL TECH LLC	4	2004–2010
FORD GLOBAL TECH INC	2	1998–2002

Locations

Location	Patents	Span
Oak Park, MI, US	19	1983–2010