John L. Haack
12Patents
7h-index
23Co-inventors
62Inventor score
Filing activity: Jul 23, 1984 → Sep 30, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6227768A | Particulate conveyor device and apparatus | Performing Operations; Transporting | 54 | Expired |
| US4937157A | Toner and developer compositions with charge enhancing additives | Physics | 44 | Expired |
| US5114821A | Toner and developer compositions with charge enhancing additives | Physics | 19 | Expired |
| US5461580A | Computer-aided chemical illustration system | Physics | 18 | Expired |
| US4687590A | Oil-in-alcohol microemulsion containing oil-soluble corrosion inhibitor in antifreeze | Chemistry; Metallurgy | 13 | Expired |
| US4704220A | Oil-in-alcohol microemulsions in antifreeze | Chemistry; Metallurgy | 10 | Expired |
| US4613445A | Organophosphate-containing antifreeze | Chemistry; Metallurgy | 9 | Expired |
| US5045423A | Toner and developer compositions with charge enhancing additives | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4898802A | Toner compositions with organo boron negative charge enhancing additives | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5288580A | Toner and processes thereof | Physics | 3 | Expired |
| US4939061A | Toner compositions with negative charge enhancing additives | Physics | 1 | Expired |
| US5308363A | Process for quaternary ammonium bisulfates | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.