Inventor

Donald J. Barclay

Inventor

Winchester, GB

Overview

24→

Patents

1977–1985

Patent span

Chemistry

Primary field (CPC C)

Patents· 24 as inventor

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

C25Dprimary

C25DProcesses for the electrolytic or electrophoretic production of coatings56%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein30%

G09GArrangements or circuits for control of indicating devices using static means to present variable information11%

G01RMeasuring electric variables4%

PatentTitleYear

4,526,441'Method and electrolytic display for selectively displaying an image'1985 4,507,178'Electrodeposition of chromium and its alloys'1985 4,502,927'Electrodeposition of chromium and its alloys'1985 4,488,782'Electrolytic display device employing metal ion catalysis'1984 4,472,250'Bath and process for the electrodeposition of chromium'1984 4,448,649'Trivalent chromium electroplating baths'1984 4,448,648'Trivalent chromium electroplating baths'1984 RE031508'Electrodeposition of chromium'1984 4,417,955'Method of and solution for electroplating chromium and chromium alloys and method of making the solution'1983 4,374,007'Trivalent chromium electroplating solution and process'1983 4,278,512'Low concentration trivalent chromium electroplating solution and process'1981 4,265,543'Kerr effect apparatus'1981 4,256,380'Counter electrode arrangement of an electrochromic display device'1981 4,256,548'Elimination of anode hydrogen cyanide formation in trivalent chromium plating'1981 4,252,418'Electrochromic display device'1981 4,228,431'Electrochromic display device'1980 4,196,062'Method of brightening electrodeposited chromium'1980 4,187,003'Electrolyte for electrochromic display device'1980 4,167,309'Electrochromic display device'1979 4,167,308'Electrochromic display device'1979 4,161,432'Electroplating chromium and its alloys'1979 4,141,803'Method and composition for electroplating chromium and its alloys and the method of manufacture of the composition'1979 4,092,637'Liquid electrolyte type electrochromic display device'1978 4,062,737'Electrodeposition of chromium'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1985Patents assigned to IBM (23)· patent assignee history

1977–1984Based in Olivers Battery, GB· patent location history

1978–1985Based in Winchester, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	23	1977–1985

Locations

Location	Patents	Span
Winchester, GB	17	1978–1985
Olivers Battery, GB	7	1977–1984