Norman Richardson
18Patents
11h-index
24Co-inventors
72Inventor score
Filing activity: May 29, 1975 → Nov 1, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5490980A | Covalent bonding of active agents to skin, hair or nails | Human Necessities | 81 | Expired |
| US4046707A | Treatment of aqueous systems | Chemistry; Metallurgy | 63 | Expired |
| US4681686A | Cotelomer compounds | Chemistry; Metallurgy | 30 | Expired |
| US4689200A | Systems inhibited against corrosion and/or scale deposition | Chemistry; Metallurgy | 27 | Expired |
| US4159946A | Treatment of aqueous systems | Chemistry; Metallurgy | 18 | Expired |
| US5954123A | Heat exchanger | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4239648A | Telomeric phosphorus corrosion inhibiting compositions | Chemistry; Metallurgy | 15 | Expired |
| US6991799B2 | Non-sticky cosmetic moisturizer for skin and hair | Human Necessities | 14 | Expired |
| US5667793A | Skin care compositions for treating cellulite | Human Necessities | 12 | Expired |
| US4105551A | Treatment of aqueous systems | Chemistry; Metallurgy | 11 | Expired |
| US4828795A | Systems inhibited against corrosion and/or scale deposition | Chemistry; Metallurgy | 11 | Expired |
| US4127483A | Treatment of aqueous systems | Chemistry; Metallurgy | 11 | Expired |
| US5811112A | Oil-in-water cosmetic emulsions containing a stabilized protease | Human Necessities | 9 | Expired |
| US4656200A | Phosphonic acid salts as flame retardants for polyurethanes and polyisocyanurates | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4918122A | Flame retardant compositions | Chemistry; Metallurgy | 8 | Expired |
| US4666967A | Flame retardants for polyurethanes | Chemistry; Metallurgy | 4 | Expired |
| US4111804A | Novel compositions of matter for use in the treatment of aqueous systems | Chemistry; Metallurgy | 3 | Expired |
| US4189383A | Novel compositions of matter for use in the treatment of aqueous systems | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.