Sperry Corp.
1,039Patents
0Active
1,039Granted
47Portfolio score
Filing activity: Aug 19, 1970 → May 5, 1987
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4558302A | High speed data compression and decompression apparatus and method | Electricity | 490 | Expired |
| US4464650A | Apparatus and method for compressing data signals and restoring the compressed data signals | Emerging Cross-Sectional Technologies | 358 | Expired |
| US4386345A | Color and brightness tracking in a cathode ray tube display system | Physics | 298 | Expired |
| US4333082A | Inhomogeneous dielectric dome antenna | Electricity | 246 | Expired |
| US4345256A | Steerable directional antenna | Electricity | 229 | Expired |
| US4188595A | Shielded surface wave transmission line | Electricity | 214 | Expired |
| US4638493A | Adaptive interference rejection for improved frequency hop detection | Electricity | 163 | Expired |
| US4498177A | M Out of N code checker circuit | Electricity | 156 | Expired |
| US4527241A | Automatic combine harvester adjustment system | Human Necessities | 142 | Expired |
| US4598357A | Cache/disk subsystem with file number for recovery of cached data | Physics | 135 | Expired |
| US4634858A | Variable coupler fiberoptic sensor | Physics | 134 | Expired |
| US4394732A | Cache/disk subsystem trickle | Physics | 132 | Expired |
| US4516837A | Electro-optical switch for unpolarized optical signals | Physics | 131 | Expired |
| US4418393A | Matched filter spread spectrum code recovery apparatus | Electricity | 124 | Expired |
| US4605977A | Air bearing head displacement sensor and positioner | Physics | 120 | Expired |
| US4247843A | Aircraft flight instrument display system | Emerging Cross-Sectional Technologies | 110 | Expired |
| US4425615A | Hierarchical memory system having cache/disk subsystem with command queues for plural disks | Physics | 109 | Expired |
| US4633434A | High performance storage unit | Physics | 108 | Expired |
| US4419724A | Main bus interface package | Physics | 105 | Expired |
| US4394642A | Apparatus for interleaving and de-interleaving data | Electricity | 104 | Expired |
| US4455545A | High frequency output inductor for inverter power supply | Electricity | 102 | Expired |
| US4494192A | High speed bus architecture | Physics | 100 | Expired |
| US4544963A | Read signal detection in ternary 3PM magnetic recording | Physics | 99 | Expired |
| US4424865A | Thermally energized packer cup | Emerging Cross-Sectional Technologies | 99 | Expired |
| US4530054A | Processor-addressable timestamp for indicating oldest written-to cache entry not copied back to bulk memory | Physics | 98 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.