Inventor · disambiguated record
Douglas C. Harper
Also filed as: ATTENBURROW DEREK C · HARPER DOUGLAS C · HARPER DOUGLAS CHARLES
4 granted patents·94 citations·filing 1973–1979
79Inventor score
Files withFISONS LTD4
Top patents by PatentIndex Score
4 records- 0178US4221769AProcess for preventing the formation of calcium sulphate scaleFISONS LTD·Filed 1979·Granted Sep 9, 1980·26 cites·10 claims
- 0276US4049774AProcess for reducing formation of gypsum scale durng the washing of calcium sulphate hemihydrate crystalsFISONS LTD·Filed 1974·Granted Sep 20, 1977·21 cites·10 claims
- 0374US4178716ANutrient film techniqueFISONS LTD·Filed 1978·Granted Dec 18, 1979·20 cites·13 claims
- 0471US3972981AMethod of preventing gypsum scale formation in phosphoric acid plant filtersFISONS LTD·Filed 1973·Granted Aug 3, 1976·27 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →