COLVERN LTD

Overview

Total Patents

16

About

COLVERN LTD has a total of 16 patent applications. Its first patent ever was published in 1950. It filed its patents most often in United Kingdom, EPO (European Patent Office) and United States. Its main competitors in its focus markets electrical machinery and energy, machines and measurement are VISHAY DALE ELECTRONICS LLC, VISHAY DALE ELECTRONICS INC and DALE ELECTRONICS.

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Patent filings in countries

World map showing COLVERN LTDs patent filings in countries

#	Country	Total Patents
#1	United Kingdom	8
#2	EPO (European Patent Office)	3
#3	United States	2
#4	Germany	1
#5	France	1
#6	WIPO (World Intellectual Property Organization)	1

Patent filings per year

Chart showing COLVERN LTDs patent filings per year from 1900 to 2020

Similar Companies

VISHAY DALE ELECTRONICS LLC 95% similarity

VISHAY DALE ELECTRONICS INC 92% similarity

DALE ELECTRONICS 92% similarity

PAUL XAVIER FOX 91% similarity

MURATA MFG KK 91% similarity

OHMITE MFG COMPANY 90% similarity

WATERS MFG INC 84% similarity

PREMIER ELECTRIC COMPANY 84% similarity

MUCHER JOHN J 83% similarity

BOURNS LAB INC 82% similarity

Focus industries

#	Industry
#1	Electrical machinery and energy
#2	Machines
#3	Measurement
#4	Mechanical elements

Focus technologies

#	Technology
#1	Resistors
#2	Unspecified technologies
#3	Magnets and transformers
#4	Measuring force, work and fluid pressure
#5	Gearing

Top inventors

#	Name	Total Patents
#1	Goodinge John William Devereux	2
#2	Staines Collin Leslie	2
#3	Pitcher Arnold	2
#4	Cairns Michael Paul	2
#5	Francis Collinson Richard	1
#6	Cast Bernard Edward	1
#7	Kirby Peter Linley Dr	1
#8	Collinson Richard Francis	1

Latest patents

Publication	Filing date	Title
GB9320011D0	1993-09-28	Potentiometers
GB9220287D0	1992-09-25	Potentiometers
GB9200089D0	1992-01-03	Reduction drive for shaft-driven potentiometers
EP0070934A1	1981-07-28	Variable electrical resistance device
US4400686A	1981-07-21	Variable electrical resistance device
GB2098739A	1981-05-16	Electrical strain gauges
GB2067846A	1980-11-14	Variable electrical resistance device
GB864344A	1956-07-06	Improvements in or relating to variable resistors or potentiometers
GB689460A	1950-01-24	Improvements in or relating to variable impedance devices and inductors
GB688270A	1950-01-24	Improvements in or relating to variable impedance devices