Koji Masuda
132Patents
17h-index
161Co-inventors
89Inventor score
Filing activity: Nov 6, 1974 → Apr 21, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6081386A | Optical scanning lens, optical scanning and imaging system and optical scanning apparatus incorporating same | Physics | 100 | Expired |
| US6069724A | Optical scanning lens and optical scanning apparatus | Physics | 80 | Expired |
| US6686946B2 | Density unevenness suppressing image forming apparatus and method | Physics | 61 | Expired |
| US4587231A | Method of producing monolithic catalyst for purification of exhaust gas | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5171969A | Movable film fixing device with heater control responsive to selected sheet size | Physics | 49 | Expired |
| US5407880A | Catalysts for adsorption of hydrocarbons | Performing Operations; Transporting | 46 | Expired |
| US5915146A | Image heating apparatus with multiple temperature detecting members | Physics | 36 | Expired |
| US10775573B1 | Embedding mirror with metal particle coating | Physics | 27 | Active |
| US5204723A | Heating apparatus having heater with branch | Physics | 25 | Expired |
| US4499205A | High activity catalyst for reforming of methanol and process of preparing same | Chemistry; Metallurgy | 21 | Expired |
| US6496214B1 | Image forming elements array, and optical printing head and image forming apparatus using the array | Physics | 20 | Expired |
| US6456314B1 | Optical printing head and image forming apparatus using it | Performing Operations; Transporting | 20 | Expired |
| US4875060A | Discharge head for an electrostatic recording device | Performing Operations; Transporting | 19 | Expired |
| US6717606B2 | Optical print head and image forming apparatus using a rod lens with a predetermined conjugate length | Performing Operations; Transporting | 19 | Expired |
| US6462879B2 | Optical writing device and image forming apparatus and method using the same | Performing Operations; Transporting | 18 | Expired |
| US6724414B2 | Imaging device array, optical writing unit and image forming apparatus | Performing Operations; Transporting | 18 | Expired |
| US10025044B1 | Optical structure | Physics | 18 | Active |
| US4501823A | Catalyst for reforming of methanol and process of preparing same | Performing Operations; Transporting | 17 | Expired |
| US6067433A | Developing apparatus for regulating the amount of developer in the vicinity of repulsive magnetic pole | Physics | 17 | Expired |
| US7068295B2 | Optical writing unit, a driving method thereof, and an image forming apparatus | Electricity | 16 | Expired |
| US6697181B2 | Optical scanning device, image forming apparatus and optical scanning method | Physics | 16 | Expired |
| US3970014A | Automatic sewing machine | Textiles; Paper | 15 | Expired |
| US7817176B2 | Light source device, optical scanning device, and image forming apparatus | Physics | 14 | Active |
| US6442355B1 | Developer density controlling apparatus including target density information detection and toner image density detection | Physics | 14 | Expired |
| US10018781B1 | Fluid control structure | Physics | 13 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.