Hudson Soft Co., Ltd.
65Patents
0Active
65Granted
37Portfolio score
Filing activity: Feb 25, 1988 → Dec 2, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5339239A | Information collecting and/or service furnishing systems by which a user can request information from a central data base using a portable personal terminal and an access terminal | Physics | 321 | Expired |
| US5961386A | Computer system for playing competing type game with specific characteristic removable data | Human Necessities | 116 | Expired |
| US5515104A | Camera having color correction coefficients set in accordance with a combination of photographic parameters | Electricity | 103 | Expired |
| US5530873A | Method and apparatus for processing interruption | Physics | 81 | Expired |
| US5390938A | Video game apparatus | Human Necessities | 71 | Expired |
| US5515077A | Image processing system | Physics | 67 | Expired |
| US4970642A | An apparatus for accessing a memory | Physics | 65 | Expired |
| US5993319A | Home television-game apparatus with time management unit | Human Necessities | 37 | Expired |
| US5574465A | Portable Astronomic/meteoric observation system | Physics | 35 | Expired |
| US5467442A | Image processing apparatus | Physics | 30 | Expired |
| USD333493S | Electronic game housing | General | 27 | Expired |
| US4951038A | Apparatus for displaying a sprite on a screen | Physics | 27 | Expired |
| USD329470S | Electronic game housing | General | 27 | Expired |
| US5448534A | Radio with recording and reproducing function | Electricity | 26 | Expired |
| US5935006A | Debug apparatus and method for debugging game program in ROM cartridge | Physics | 24 | Expired |
| US7162197B2 | Picture book production system, server for producing picture book, and recording medium | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6594547B2 | Baggage managing system in airport | Performing Operations; Transporting | 22 | Expired |
| US5030946A | Apparatus for the control of an access to a video memory | Physics | 18 | Expired |
| US5812119A | Image processing system and method for formatting compressed image data | Physics | 16 | Expired |
| US6065132A | Information processing system having a CPU for controlling access timings of separate memory and I/O buses | Physics | 16 | Expired |
| US5971856A | Method for backing up state of progress in television game | Human Necessities | 15 | Expired |
| US5357584A | Method and apparatus for compressing and extending an image | Electricity | 14 | Expired |
| US5630105A | Multimedia system for processing a variety of images together with sound | Electricity | 13 | Expired |
| US6302792A | Method of setting level parameters of enemy characters of a computer game and device therefor | Human Necessities | 13 | Expired |
| US5807173A | Method for performing derivative scenario in game program | Human Necessities | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.