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Inventor

John Hart

Inventor
Lexington, OH, US

Overview

10→
Patents
1981–2020
Patent span
Physics
Primary field (CPC G)

Patents· 10 as inventor

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

G01Lprimary
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure23%
G01NInvestigating or analysing materials by determining their chemical or physical properties23%
Y10TTechnical subjects covered by former us classification18%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general14%
G01MTesting static or dynamic balance of machines or structures14%
H05KPrinted circuits9%
PatentTitleYear
10,591,398Soot sensor system202010,416,062Soot sensor system20199,696,249'Soot sensor system'20179,389,163'Soot sensor system'20169,134,216'Soot sensor system'20155,867,886'Method of making a thick film pressure sensor'19995,377,403'Method of manufacturing a pressure sensor assembly'19955,263,241'Apparatus useful in the manufacture of a pressure sensor assembly'19934,850,227'Pressure sensor and method of fabrication thereof'19894,295,117'Pressure sensor assembly'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1999Based in Kokomo, IN, US· patent location history
1989–1999Patents assigned to DELCO ELECTRONICS CORP (4)· patent assignee history
2015–2020Patents assigned to STONERIDGE INC (5)· patent assignee history
2015–2016Patents assigned to HART JOHN (2)· patent assignee history
2015–2016Patents assigned to HEDAYAT KAYVAN (2)· patent assignee history
2015–2016Patents assigned to MATSON ERIC (2)· patent assignee history
2015–2020Based in Lexington, OH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
STONERIDGE INC52015–2020
DELCO ELECTRONICS CORP41989–1999
HART JOHNself22015–2016
HEDAYAT KAYVAN22015–2016
MATSON ERIC22015–2016
Locations
LocationPatentsSpan
Lexington, OH, US52015–2020
Kokomo, IN, US51981–1999