Inventor

David H. Kirkman

Inventor

Winchester, GB

Overview

4→

Patents

1978–1985

Patent span

Physics

Primary field (CPC G)

Patents· 4 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein57%

G09GArrangements or circuits for control of indicating devices using static means to present variable information29%

C25DProcesses for the electrolytic or electrophoretic production of coatings14%

PatentTitleYear

4,545,650'Liquid filled electro-optic display cell with diaphragm seal'1985 4,526,441'Method and electrolytic display for selectively displaying an image'1985 4,436,378'Passive display module and system'1984 4,092,637'Liquid electrolyte type electrochromic display device'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1985Patents assigned to IBM (4)· patent assignee history

1978Based in West Moors, GB· patent location history

1984–1985Based in Winchester, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	4	1978–1985

Locations

Location	Patents	Span
Winchester, GB	3	1984–1985
West Moors, GB	1	1978