Intergraph Corporation
138Patents
30Active
138Granted
46Portfolio score
Filing activity: Mar 26, 1980 → Dec 20, 2022 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5579222A | Distributed license administration system using a local policy server to communicate with a license server and control execution of computer programs | Physics | 195 | Expired |
| US5542088A | Method and apparatus for enabling control of task execution | Physics | 180 | Expired |
| US5091846A | Cache providing caching/non-caching write-through and copyback modes for virtual addresses and including bus snooping to maintain coherency | Physics | 137 | Expired |
| US5560028A | Software scheduled superscalar computer architecture | Physics | 137 | Expired |
| US5426780A | System for dynamic segmentation analysis using conversion of relational data into object-oriented data | Emerging Cross-Sectional Technologies | 118 | Expired |
| US4933835A | Apparatus for maintaining consistency of a cache memory with a primary memory | Physics | 112 | Expired |
| US6292804A | Object relationship management system | Emerging Cross-Sectional Technologies | 84 | Expired |
| US5255384A | Memory address translation system having modifiable and non-modifiable translation mechanisms | Physics | 83 | Expired |
| US4860192A | Quadword boundary cache system | Physics | 82 | Expired |
| US5274593A | High speed redundant rows and columns for semiconductor memories | Physics | 80 | Expired |
| US5598115A | Comparator cell for use in a content addressable memory | Physics | 80 | Expired |
| US5910804A | OLE for design and modeling | Physics | 79 | Expired |
| US6392651B1 | Interactive timeline visualization | Physics | 75 | Expired |
| US6374329B1 | High-availability super server | Electricity | 72 | Expired |
| US5692184A | Object relationship management system | Emerging Cross-Sectional Technologies | 72 | Expired |
| US6046709A | Multiple display synchronization apparatus and method | Physics | 64 | Expired |
| US4899275A | Cache-MMU system | Physics | 64 | Expired |
| US5534796A | Self-clocking pipeline register | Physics | 61 | Expired |
| US4884197A | Method and apparatus for addressing a cache memory | Physics | 57 | Expired |
| US6052691A | Object relationship management system | Emerging Cross-Sectional Technologies | 56 | Expired |
| US6029257A | Apparatus and method for testing computer systems | Physics | 54 | Expired |
| US4811215A | Instruction execution accelerator for a pipelined digital machine with virtual memory | Physics | 53 | Expired |
| US5799204A | System utilizing BIOS-compatible high performance video controller being default controller at boot-up and capable of switching to another graphics controller after boot-up | Physics | 49 | Expired |
| US6198487A | Ole for design and modeling | Physics | 49 | Expired |
| US5446685A | Pulsed ground circuit for CAM and PAL memories | Physics | 48 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.