Hitoshi Maekawa
29Patents
9h-index
27Co-inventors
75Inventor score
Filing activity: Nov 15, 1979 → Mar 23, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5487099A | Portable telephone having an additional device for making external connections | Electricity | 40 | Expired |
| US5361186A | Self reconfigurable cellular robotic system | Physics | 29 | Expired |
| US6032858A | Electronic money storing apparatus and IC card control method | Physics | 20 | Expired |
| US4587495A | Cascode amplifier with an improved biasing arrangement | Electricity | 17 | Expired |
| US5490202A | Attachable and detachable additional device for use with a portable telephone for electrically connecting with the portable telephone external equipment | Electricity | 14 | Expired |
| US4707640A | Horizontal deflection output circuit | Electricity | 12 | Expired |
| US5081628A | Cordless keyboard | Electricity | 12 | Expired |
| US4814873A | Method and apparatus for converting an image signal | Electricity | 11 | Expired |
| US6321980A | Electronic money storing apparatus and IC card control method | Physics | 10 | Expired |
| US4285008A | Color picture reproducing device | Electricity | 9 | Expired |
| US4751403A | Transistor driving circuit and circuit controlling method | Electricity | 6 | Expired |
| US4612451A | Drive circuit for driving a transistor | Electricity | 5 | Expired |
| US4737692A | Pincushion distortion correction device | Electricity | 4 | Expired |
| US9016501B2 | Coupling transfer system | Performing Operations; Transporting | 3 | Active |
| US4480268A | Gamma correction circuit | Electricity | 3 | Expired |
| US4442384A | Horizontal deflection circuit | Electricity | 3 | Expired |
| US4544896A | Amplitude adjusting equipment in a signal translation line | Electricity | 1 | Expired |
| US9539839B2 | Long sheet material holding device and printer | Performing Operations; Transporting | 0 | Active |
| US11686479B2 | Encapsulated cleanroom system | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11011403B2 | Transport container automatic clamping mechanism | Electricity | 0 | Active |
| US9254540B2 | Mounting structure of movable manufacturing device, fixing structure and movable manufacturing device | Performing Operations; Transporting | 0 | Active |
| US9478452B2 | Small production device and production system using the same | Electricity | 0 | Active |
| US9524895B2 | Substrate transfer antechamber mechanism | Electricity | 0 | Active |
| US11998496B2 | Power transmission mechanism | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10332768B2 | Compact manufacturing device, and inter-device transport system for production line | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.