Michael H. Freeman
48Patents
16h-index
38Co-inventors
81Inventor score
Filing activity: Oct 28, 1977 → May 18, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4637697A | Multifocal contact lenses utilizing diffraction and refraction | Physics | 310 | Expired |
| US4642112A | Artificial eye lenses | Physics | 202 | Expired |
| US4641934A | Ophthalmic lens with diffractive power | Physics | 189 | Expired |
| US4655565A | Ophthalmic lenses with diffractive power | Physics | 163 | Expired |
| US5748282A | Multifocal contact lens | Physics | 121 | Expired |
| US5100226A | Diffractive ophthalmic lens for correcting astigmatism | Physics | 84 | Expired |
| US5296881A | Method and contact lenses for treating presbyopia | Physics | 65 | Expired |
| US4322135A | Optical apparatus | Physics | 59 | Expired |
| US5349394A | Rigid gas permeable lenses | Physics | 50 | Expired |
| US5652679A | Optical systems, telescopes and binoculars | Physics | 44 | Expired |
| USD303246S | Electrical cable concentrator | General | 36 | Expired |
| USD682202S1 | Housing for a charging device | General | 29 | Active |
| USD308464S | Wallplate | General | 24 | Expired |
| US4261635A | Optical apparatus | Physics | 23 | Expired |
| USD721328S1 | Housing for a charging device | General | 21 | Active |
| USD317750S | Patch panel | General | 18 | Expired |
| US4200366A | Microform readers | Physics | 16 | Expired |
| USD308664S | Modular telephone jack | General | 13 | Expired |
| US9748852B2 | Electrical circuit for delivering power to consumer electronic devices | Emerging Cross-Sectional Technologies | 11 | Active |
| US5281294A | Manufacture of visual lenses | Performing Operations; Transporting | 11 | Expired |
| US9893632B2 | Electrical circuit for delivering power to consumer electronic devices | Emerging Cross-Sectional Technologies | 9 | Active |
| USD682201S1 | Housing for a charging device | General | 7 | Active |
| US5331132A | Manufacture of visual lenses | Performing Operations; Transporting | 6 | Expired |
| US9312776B2 | Electrical circuit for delivering power to consumer electronic devices | Emerging Cross-Sectional Technologies | 6 | Active |
| US9780674B2 | Electrical circuit for delivering power to consumer electronic devices | Emerging Cross-Sectional Technologies | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.