Inventor

David Williams

Inventor

Crickhowell, GB

Overview

1979–2021

Patent span

Physics

Primary field (CPC G)

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

H01Hprimary

H01HElectric switches14%

Y02TClimate change mitigation technologies related to transportation14%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%

C01BNon-metallic elements7%

E21BEarth or rock drilling7%

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

F02DControlling combustion engines7%

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

G01KMeasuring temperature7%

G06FElectric digital data processing7%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1987Patents assigned to ICI PLC (1)· patent assignee history

1987Based in Yarm, GB· patent location history

1991–1993Patents assigned to LUCAS IND PLC (2)· patent assignee history

1991–1993Based in Kingsbury, GB· patent location history

2010–2011Patents assigned to ROCKWELL AUTOMATION LTD (2)· patent assignee history

2010–2011Based in Crickhowell, GB· patent location history

2018Patents assigned to GORDON BROS SUPPLY INC (1)· patent assignee history

2018Based in Stroud, OK, US· patent location history

2021Patents assigned to COUPA SOFTWARE INC (1)· patent assignee history

2021Based in San Mateo, CA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations