Inventor

R. Keith Darlington

Inventor

Houston, TX, US

Overview

1976–1991

Patent span

Chemistry

Primary field (CPC C)

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

C01Fprimary

C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals27%

C09KMaterials for miscellaneous applications, not provided for elsewhere18%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%

C02FTreatment of water, waste water, sewage, or sludge9%

C23FNon-mechanical removal of metallic material from surface9%

E21BEarth or rock drilling9%

G01NInvestigating or analysing materials by determining their chemical or physical properties9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1985Patents assigned to NL INDUSTRIES INC (5)· patent assignee history

1976Based in Salt Lake City, UT, US· patent location history

1981Based in Freehold, NJ, US· patent location history

1984–1985Based in Houston, TX, US· patent location history

1985Patents assigned to DARLINGTON R KEITH (1)· patent assignee history

1991Patents assigned to BAROID TECHNOLOGY INC (1)· patent assignee history

1991Based in Malvern, PA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations