W. H. Howson
of Leeds
Makers of lithographic printing plates and process chemicals
1947 W. H. Howson Ltd., Lees Yard, Meadow Lane, Leeds.[1]
1951 Acquired by R. W. Crabtree and Sons.[2]
1965 Crabtree was acquired by Vickers
1967 James R. Denner patented a photographic enlarger for half-tone colour printing; the patent was assigned to the company.
1969 Vickers Printing Machinery acquired Algraphy of Orpington, maker of litho plates and chemicals[3]
1979 Howson Algraphy Group performed well[4]
1989 Howson Algraphy was sold to Du Pont which made complementary products[5]
1993 "Du Pont-Howson are leading manufacturers of Lithographic Printing Plates, Chemicals and Equipment for the Printing Industry. Our Equipment Division at Thetford is responsible for the design and manufacture of sophisticated ... "[6]
Notes
- Was the founder of W. H. Howson - Wilfred Hector Howson (1902-1971)?
1939 Listed as Printers Compositor & Machine Man.
1960 Listed as company director on passenger list for New York.