Haruo Nakamura
32Patents
13h-index
35Co-inventors
81Inventor score
Filing activity: Dec 29, 1980 → Nov 7, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6423568B1 | Method of fabricating a silicon solar cell | Emerging Cross-Sectional Technologies | 132 | Expired |
| US6337283B1 | Method of fabricating a silicon solar cell | Emerging Cross-Sectional Technologies | 130 | Expired |
| US6387726B1 | Method of fabricating a silicon solar cell | Emerging Cross-Sectional Technologies | 123 | Expired |
| US6274402A | Method of fabricating a silicon solar cell | Emerging Cross-Sectional Technologies | 117 | Expired |
| US4617699A | Hinge structure for a sun visor or the like which features a single storage position snap action function | Performing Operations; Transporting | 72 | Expired |
| US4386836A | Electro-photographic printer | Mechanical Engineering; Lighting; Heating | 67 | Expired |
| US5446485A | Drop-on-demand ink-jet printing head | Performing Operations; Transporting | 56 | Expired |
| US5541628A | Ink-jet type recording device | Performing Operations; Transporting | 45 | Expired |
| US5444471A | Drop-on-demand ink-jet printing head | Performing Operations; Transporting | 33 | Expired |
| US4520775A | Intake system for multiple valve type engine | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5739831A | Electric field driven ink jet printer having a resilient plate deformable by an electrostatic attraction force between spaced apart electrodes | Performing Operations; Transporting | 19 | Expired |
| US5600357A | Drop-on-demand ink-jet printing head | Performing Operations; Transporting | 17 | Expired |
| US6419848B1 | Piezoelectric actuator, ink-jet type recording head, manufacturing method therefor, and ink-jet printer | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4609256A | Liquid crystal optical device | Physics | 11 | Expired |
| US4417785A | Liquid crystal display with negative timing signal and dielectric inversion | Physics | 10 | Expired |
| US4559161A | Liquid crystal composition | Chemistry; Metallurgy | 9 | Expired |
| US5894317A | Drop-on-demand ink-jet printing head | Performing Operations; Transporting | 9 | Expired |
| US4927242A | Dual frequency, optically active liquid crystal cell | Physics | 8 | Expired |
| US6186619A | Drop-on-demand ink-jet printing head | Performing Operations; Transporting | 8 | Expired |
| US5910809A | Drop-on-demand ink-jet printing head | Performing Operations; Transporting | 8 | Expired |
| US4704616A | Apparatus for electrothermal printing | Electricity | 6 | Expired |
| US4810062A | Liquid crystal cell with opaque mask for printing device | Physics | 5 | Expired |
| US4671616A | Diagonally offset, dielectric anisotropy inversion, liquid crystal, microshutters | Physics | 5 | Expired |
| US8567187B2 | Thermoacoustic engine | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US4929057A | Liquid crystal optical device | Physics | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.