RC

Richard G. Copperthwaite

PL Pratley Investments (Proprietary) Limited: 1 patents #2 of 6Top 35%
Overall (All Time): #1,289,751 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5488165 Process for the production of methyl amines Graham J. Hutchin, Themistoclis Themistocleous 1996-01-30
5268107 Modified clinoptilolite as an ion exchange material Graham John Hutchings, Themistoclis Themistocleous 1993-12-07
5162598 Conversion of propane and butane Graham John Hutchings, Themistoclis Themistocleous 1992-11-10
4983560 Modified zeolite catalysts Themistoclis Themistocleous, Graham John Hutchings 1991-01-08