Hitachi Software Engineering Co., Ltd.
249Patents
24Active
249Granted
44Portfolio score
Filing activity: Apr 26, 1985 → Feb 25, 2009 · 24 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5586254A | System for managing and operating a network by physically imaging the network | Electricity | 345 | Expired |
| US5228100A | Method and system for producing from document image a form display with blank fields and a program to input data to the blank fields | Physics | 152 | Expired |
| US5189404A | Display apparatus with rotatable display screen | Physics | 136 | Expired |
| US5778388A | Method of processing a synchronization point in a database management system to assure a database version using update logs from accumulated transactions | Emerging Cross-Sectional Technologies | 121 | Expired |
| US5832510A | Information processing system enabling access to different types of files, control method for the same and storage medium for storing programs to control the same | Emerging Cross-Sectional Technologies | 119 | Expired |
| US5758356A | High concurrency and recoverable B-tree index management method and system | Emerging Cross-Sectional Technologies | 114 | Expired |
| US7035738B2 | Probe designing apparatus and probe designing method | Physics | 95 | Expired |
| US5706498A | Gene database retrieval system where a key sequence is compared to database sequences by a dynamic programming device | Emerging Cross-Sectional Technologies | 91 | Expired |
| US4882690A | Incremental logic synthesis method | Physics | 88 | Expired |
| US6622085B1 | Device and method for creating and using data on road map expressed by polygons | Physics | 79 | Expired |
| US5684957A | Network management system for detecting and displaying a security hole | Electricity | 68 | Expired |
| US5069769A | Electrophoresis pattern reading system of fluorescence type | Physics | 67 | Expired |
| US5190632A | Multi-colored electrophoresis pattern reading system | Physics | 61 | Expired |
| US4831368A | Display apparatus with rotatable display screen | Physics | 60 | Expired |
| US7358098B2 | Device for capturing beads and method and apparatus for arraying beads | Physics | 58 | Expired |
| US5455906A | Electronic board system | Physics | 52 | Expired |
| US6295066A | Method for generating virtual three-dimensional space | Physics | 48 | Expired |
| US5717846A | Method and system for drawing network diagrams | Physics | 48 | Expired |
| US5333131A | Packet switching method and system with self-routing switch | Electricity | 47 | Expired |
| US6167562A | Apparatus for creating an animation program and method for creating the same | Physics | 46 | Expired |
| US5290419A | Fluorescence detection type electrophoresis apparatus | Physics | 44 | Expired |
| US6154875A | Graphical programming system that allows easy handling of data structures and creation of programs by manipulating graphic components | Physics | 43 | Expired |
| US6055369A | Apparatus for visual programming with screen flow | Physics | 43 | Expired |
| US5557736A | Computer system and job transfer method using electronic mail system | Electricity | 42 | Expired |
| US6437314B1 | Coordinate input pen, and electronic board, coordinate input system and electronic board system using the coordinate input pen | Physics | 42 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.