DF

Derek John Fray

ND National Research Development: 8 patents #16 of 1,071Top 2%
CL Cambridge Enterprise Limited: 5 patents #23 of 688Top 4%
ML Metalysis Limited: 2 patents #5 of 24Top 25%
IL Inotec And Limited: 1 patents #2 of 5Top 40%
Northwestern University: 1 patents #1,629 of 3,846Top 45%
AL Alpha Fry Limited: 1 patents #2 of 11Top 20%
BP British Petroleum: 1 patents #145 of 360Top 45%
CR Cato Research: 1 patents #4 of 4Top 100%
FL Foseco International Limited: 1 patents #68 of 196Top 35%
📍 Great Shelford, GB: #2 of 30 inventorsTop 7%
Overall (All Time): #104,709 of 4,157,543Top 3%
33
Patents All Time

Issued Patents All Time

Showing 26–33 of 33 patents

Patent #TitleCo-InventorsDate
4879005 Electrochemical sensor for hydrogen sensing David R. Morris 1989-11-07
4869790 Metal separation process James Charles, Piers M. Copham 1989-09-26
4857156 Separating a ferro alloy Alan J. Godsell 1989-08-15
4800069 Zinc recovery from furnace dust 1989-01-24
4645650 Obtaining aqueous solution from insoluble metal oxide Herbert A. Hancock 1987-02-24
4412893 Anode-assisted cation reduction John P. Chilton, Arthur V. Cooke 1983-11-01
4292147 Zinc chloride electrolysis Bernard K. Thomas 1981-09-29
4217179 Determination of lithium, sensor therefor and method of making said sensor 1980-08-12