Inventor

Steven Wayne Campbell

Inventor

Kitchener, CA

Overview

1995–2016

Patent span

Physics

Primary field (CPC G)

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

H04Nprimary

H04NPictorial communication, e.g. television21%

G01FMeasuring volume, volume flow, mass flow or liquid level14%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure14%

G01NInvestigating or analysing materials by determining their chemical or physical properties14%

G06TImage data processing or generation, in general14%

B08BCleaning in general7%

B67DDispensing, delivering or transferring liquids, not otherwise provided for7%

Y10TTechnical subjects covered by former us classification7%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1995–1996Patents assigned to DIRECT MEASUREMENT CORP (2)· patent assignee history

1995–1996Based in Longmont, CO, US· patent location history

2013Patents assigned to CAMPBELL STEVEN WAYNE (1)· patent assignee history

2013Patents assigned to SMITH JR CHARLES ERNEST (1)· patent assignee history

2013Based in New Albany, IN, US· patent location history

2015–2016Patents assigned to BLACKBERRY LTD (3)· patent assignee history

2015–2016Patents assigned to RESEARCH IN MOTION LTD (2)· patent assignee history

2015–2016Based in Kitchener, CA· patent location history

2016Based in Waterloo, CA· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations