Inventor
Radhakrishnan Selvarajan
Inventor
Downers Grove, IL, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C02Fprimary
C02FTreatment of water, waste water, sewage, or sludge24%
B01DSeparation18%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals18%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%
C08JWorking-up6%
C09KMaterials for miscellaneous applications, not provided for elsewhere6%
B03DFlotation3%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
PatentTitleYear
6,294,093'Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions'20016,210,585'Fatty acid free latex polymer flocculants'20016,086,771'Water continuous emulsion polymers for improving scale control in the bayer process'20006,048,463'Water continuous methyl acrylate emulsion polymer combinations and methyl acrylate emulsion homopolymers for improved flocculation of red mud in the bayer process'20006,036,869'Water continuous methyl acrylate emulsion polymers for improved flocculation of red mud in the Bayer process'20005,837,776'Process for producing water soluble anionic dispersion polymers'19985,837,215'Method of removing insoluble materials from bayer process with fatty acid and fatty acid free polymer flocculants'19985,736,405'Monitoring boiler internal treatment with fluorescent-tagged polymers'19985,605,970'Synthesis of high molecular weight anionic dispersion polymers'19974,744,891'Flotation of apatite from magnatite'19884,545,902'Flocculants for bauxite (red mud)'19854,422,944'Cationic polymers suitable for reducing turbidity in low turbidity waters'19834,308,149'Branched/cross-linked cationic phenol-formaldehyde polymers useful in wastewater treatment'19814,100,167'Production of 1-aminoalkane-1, 1-diphosphonic acids using phosphorous acid and nitriles in a non-aqueous system'19784,057,580'Production of water-soluble polyamine condensate polymers having greater linear characteristics'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–2001Patents assigned to NALCO CHEMICAL CO (14)· patent assignee history
1977–1988Based in Oak Park, IL, US· patent location history
1997–2001Based in Downers Grove, IL, US· patent location history
2001Patents assigned to NALCO EXXON ENERGY CHEM LP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NALCO CHEMICAL CO | 14 | 1977–2001 |
| NALCO EXXON ENERGY CHEM LP | 1 | 2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Downers Grove, Illinois, US | 9 | 1997–2001 |
| Oak Park, Illinois, US | 6 | 1977–1988 |