Sperry Rand Corporation
632Patents
0Active
632Granted
45Portfolio score
Filing activity: Jul 31, 1958 → Sep 4, 1979
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4112502A | Conditional bypass of error correction for dual memory access time selection | Physics | 174 | Expired |
| US3975711A | Real time fingerprint recording terminal | Human Necessities | 168 | Expired |
| US4057847A | Remote controlled test interface unit | Physics | 131 | Expired |
| US3937889A | Data communication apparatus for use in a telephone system | Electricity | 131 | Expired |
| US4067059A | Shared direct memory access controller | Physics | 111 | Expired |
| US4144449A | Position detection apparatus | Physics | 109 | Expired |
| US4058851A | Conditional bypass of error correction for dual memory access time selection | Physics | 100 | Expired |
| US4057784A | Bi-directional scanner assembly | Physics | 97 | Expired |
| US4032893A | Reconfigurable data bus | Electricity | 93 | Expired |
| US4027348A | Skin treatment appliance | Emerging Cross-Sectional Technologies | 91 | Expired |
| US4042132A | Spout control apparatus for agricultural machines | Human Necessities | 89 | Expired |
| US3968476A | Spurious signal removal in optical processor fingerprint identification apparatus | Physics | 88 | Expired |
| US4034349A | Apparatus for processing interrupts in microprocessing systems | Physics | 85 | Expired |
| US4056107A | Crop residue deflector means | Human Necessities | 84 | Expired |
| US3995212A | Apparatus and method for sensing a liquid with a single wire transmission line | Physics | 76 | Expired |
| US4110605A | Weight and balance computer apparatus for aircraft | Physics | 71 | Expired |
| US4168541A | Paired least recently used block replacement system | Physics | 70 | Expired |
| US3968475A | Digital processor for extracting data from a binary image | Physics | 70 | Expired |
| US4016548A | Communication multiplexer module | Physics | 69 | Expired |
| US3967247A | Storage interface unit | Physics | 67 | Expired |
| US4160970A | Electromagnetic wave telemetry system for transmitting downhole parameters to locations thereabove | Fixed Constructions | 61 | Expired |
| US4155119A | Method for providing virtual addressing for externally specified addressed input/output operations | Physics | 58 | Expired |
| US4177625A | Pull-type agricultural machine | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4124970A | Automatic reel height control for a harvester header having a flexible cutterbar | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4021097A | Distributive tee coupler | Physics | 53 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.