Roger E. Neff
21Patents
13h-index
7Co-inventors
74Inventor score
Filing activity: Oct 26, 1976 → Oct 24, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5171808A | Cross-linked anionic and amphoteric polymeric microparticles | Textiles; Paper | 72 | Expired |
| US4968435A | Cross-linked cationic polymeric microparticles | Emerging Cross-Sectional Technologies | 55 | Expired |
| US5340865A | Cross-linked cationic polyermic microparticles | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4861499A | Water-dispersible hydrophobic thickening agent | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5152903A | Cross-linked cationic polymeric microparticles | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4622356A | Polyacrylamide and polyacrylic acid polymers | Chemistry; Metallurgy | 27 | Expired |
| US5945494A | High performance cationic polymer flocculating agents | Chemistry; Metallurgy | 26 | Expired |
| US5286806A | Methods of making and using high molecular weight acrylamide polymers | Chemistry; Metallurgy | 23 | Expired |
| US5405554A | High performance dewatering aids | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5354481A | Water-soluble highly branched polymeric microparticles | Textiles; Paper | 18 | Expired |
| US6130303A | Water-soluble, highly branched polymeric microparticles | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5530069A | Methods of making and using high molecular weight acrylamide polymers | Chemistry; Metallurgy | 16 | Expired |
| US4072607A | Preparation of anionic polymers for use as scale inhibitors and anti-precipitants | Chemistry; Metallurgy | 14 | Expired |
| US6147176A | High performance polymer flocculating agents nonionic polymers | Chemistry; Metallurgy | 13 | Expired |
| US6191242A | Process for making high performance anionic polymeric flocculating agents | Chemistry; Metallurgy | 13 | Expired |
| US4175100A | Preparation of anionic polymers for use as scale inhibitors and anti-precipitants | Chemistry; Metallurgy | 12 | Expired |
| US5643461A | High performance dewatering aids | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5919882A | High performance anionic polymeric flocculating agents | Chemistry; Metallurgy | 9 | Expired |
| US5882525A | Method for treating suspended solids | Chemistry; Metallurgy | 9 | Expired |
| US5961840A | Method of dewatering suspensions with unsheared anionic flocculants | Chemistry; Metallurgy | 6 | Expired |
| US4568731A | Polyacrylamide and polyacrylic acid polymers | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.