Inventor

Raymond Liu

Inventor

Norwalk, CT, US

Overview

1979–2002

Patent span

Chemistry

Primary field (CPC C)

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

C01Dprimary

C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium22%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry11%

C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals11%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light11%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices11%

G06FElectric digital data processing11%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters11%

H03FAmplifiers11%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1979–1986Patents assigned to PERKIN ELMER CORP (3)· patent assignee history

1979–1986Based in Norwalk, CT, US· patent location history

1993Patents assigned to DU PONT (1)· patent assignee history

1993Based in Cary, NC, US· patent location history

1999Patents assigned to CMD TECHNOLOGY INC (1)· patent assignee history

1999Based in Laguna Niguel, CA, US· patent location history

2000–2002Patents assigned to INT PAPER CO (2)· patent assignee history

2000–2002Based in Jakarta, ID· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations