Inventor · disambiguated record
Narayan Das
Also filed as: DAS NARAYAN
10 granted patents·292 citations·filing 1974–1997
91Inventor score
Top patents by PatentIndex Score
10 records- 0196US3964936ACoating solution for metal surfacesAMCHEM PROD·Filed 1974·Granted Jun 22, 1976·76 cites·30 claims
- 0286US4470853ACoating compositions and method for the treatment of metal surfacesCORAL CHEMICAL CO·Filed 1983·Granted Sep 11, 1984·51 cites·15 claims
- 0382US5139586ACoating composition and method for the treatment of formed metal surfacesCORAL INTERNATIONAL INC·Filed 1991·Granted Aug 18, 1992·45 cites·38 claims
- 0469US6027579ANon-chrome rinse for phosphate coated ferrous metalsCORAL CHEMICAL CO·Filed 1997·Granted Feb 22, 2000·32 cites·27 claims
- 0569US4422886ASurface treatment for aluminum and aluminum alloysCHEM SYSTEMS·Filed 1983·Granted Dec 27, 1983·23 cites·8 claims
- 0660US4391652ASurface treatment for aluminum and aluminum alloysCHEM SYSTEMS·Filed 1982·Granted Jul 5, 1983·16 cites·15 claims
- 0759US5332452ACoating composition and method for the treatment of formed metal surfacesCORAL INTERNATIONAL INC·Filed 1992·Granted Jul 26, 1994·17 cites·27 claims
- 0855US5279677ARinse aid for metal surfacesCORAL INTERNATIONAL INC·Filed 1991·Granted Jan 18, 1994·17 cites·29 claims
- 0953US4285223APhosphate and ester coating methodDAS NARAYAN·Filed 1979·Granted Aug 25, 1981·11 cites·6 claims
- 1036US4381064ACoated sheet material and container therefromNAT CAN CORP·Filed 1981·Granted Apr 26, 1983·4 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →