Knut Oppenlander
39Patents
13h-index
90Co-inventors
80Inventor score
Filing activity: Jan 6, 1984 → Oct 18, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5759409A | Separation of water from crude oil and oil demulsifiers used for this purpose | Chemistry; Metallurgy | 29 | Expired |
| US5766273A | Polymer blends and their use as additives for mineral oil middle distillates | Chemistry; Metallurgy | 28 | Expired |
| US6165971A | Use of amides of polymerized fatty acids as thickeners | Human Necessities | 27 | Expired |
| US6140541A | Process for preparing polyalkene amines | Chemistry; Metallurgy | 25 | Expired |
| US6267936A | Method for effecting solvent extraction of metal ions using hydrocarbon soluble aminomethylene phosphonic acid compounds | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5863879A | Dye transfer inhibitors for detergents | Chemistry; Metallurgy | 21 | Expired |
| US6545067B1 | Additives for mineral building materials containing cement | Chemistry; Metallurgy | 21 | Expired |
| US6284716A | Copolymers and their reaction products with amines as fuel and lubricant additives | Chemistry; Metallurgy | 21 | Expired |
| US6225507A | Method of preparing aldehydes by hydroformylation with a rhodium catalyst and recovery of the rhodium catalyst by extraction | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5795482A | Use of hydrocarbon-soluble aminomethylene phosphonic acid derivatives in the solvent extraction of iron ions from aqueous solutions | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5660601A | Polyetheramine-containing fuels for gasoline engines | Chemistry; Metallurgy | 16 | Expired |
| US6512055B2 | Copolymers and their reaction products with amines as fuel and lubricant additives | Chemistry; Metallurgy | 13 | Expired |
| US6579846B1 | Acylated polymeric polyamines | Chemistry; Metallurgy | 13 | Expired |
| US6509012B1 | Aqueous cationic tenside preparations, method for the production and use thereof | Human Necessities | 12 | Expired |
| US5846453A | Process for producing oligoamines or polyamines | Chemistry; Metallurgy | 11 | Expired |
| US5872149A | Alk(en)yldicarboxylic acid bisesters, their use, and processes for their preparation | Human Necessities | 11 | Expired |
| US6365637B1 | Use of esters or amides of hydroxylated carboxylic acids as solubilizers | Human Necessities | 8 | Expired |
| US6533830B1 | Polyalkene alcohol-polyalkoxylates and their use in fuels and lubricants | Chemistry; Metallurgy | 7 | Expired |
| US6033442A | Use of aqueous solutions or dispersions of copolymers of carboxyl-group-containing monomers, ethylenically unsaturated acetals, ketals or orthocarboxylic acid esters and optionally other copolymerizable monomers as leather tanning agents | Chemistry; Metallurgy | 7 | Expired |
| US6604598B1 | Fuel tank for automobiles with fuel cell drive | Performing Operations; Transporting | 5 | Expired |
| US4546151A | Oxyalkylated polyamidoamines and their preparation | Chemistry; Metallurgy | 5 | Expired |
| US5744066A | Defoaming and deaerating mixtures for aqueous media prone to foaming | Textiles; Paper | 4 | Expired |
| US6413445B1 | Antifreeze concentrates and coolant compositions containing these concentrates for cooling circuits in internal combustion engines | Chemistry; Metallurgy | 4 | Expired |
| US6077460A | Corrosion inhibition | Chemistry; Metallurgy | 4 | Expired |
| US6045719A | Use of quaternized imidazoles as corrosion inhibitors for non-ferrous metals, and coolant compositions and antifreeze concentrates comprising them | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.