Smiths Industries
70Patents
0Active
70Granted
39Portfolio score
Filing activity: Sep 19, 1974 → Jun 17, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4034401A | Observer-identification of a target or other point of interest in a viewing field | Mechanical Engineering; Lighting; Heating | 225 | Expired |
| US4309070A | Display apparatus | Physics | 190 | Expired |
| US4266815A | Connectors | Emerging Cross-Sectional Technologies | 100 | Expired |
| US4032757A | Control apparatus | Physics | 68 | Expired |
| US4130241A | Control systems | Physics | 52 | Expired |
| US4052990A | Medico-surgical tube and adaptor | Performing Operations; Transporting | 37 | Expired |
| US4001499A | Display systems | Physics | 35 | Expired |
| US5420481A | Fluorescent lamp with wide range of luminous intensities | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4183618A | Couplings and terminals for optical waveguides | Physics | 31 | Expired |
| US4412296A | Graphics clipping circuit | Physics | 30 | Expired |
| US5602333A | Apparatus for measuring the level of a liquid in a tank | Physics | 27 | Expired |
| US4167113A | Display systems | Physics | 27 | Expired |
| US5485083A | Transformer coupled in-line metallic debris sensor | Physics | 25 | Expired |
| US4187505A | Display apparatus | Electricity | 25 | Expired |
| US4828389A | Integrated triad optical rate sensor apparatus | Physics | 22 | Expired |
| US5270693A | Enlarged area addressable matrix | Physics | 21 | Expired |
| US4127850A | Scanning display apparatus | Physics | 21 | Expired |
| US4160600A | Pressure-responsive apparatus | Physics | 21 | Expired |
| US4259865A | Fluid-gauging systems | Physics | 20 | Expired |
| US5557297A | System for displaying calligraphic video on raster displays | Physics | 19 | Expired |
| USD243365S | Medical airway tube separator or the like | General | 17 | Expired |
| US4344141A | Gas-turbine engine control | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4146925A | Graphics generator | Physics | 16 | Expired |
| US4262290A | Display systems | Physics | 16 | Expired |
| US4029966A | Radiation-detecting devices and apparatus | Emerging Cross-Sectional Technologies | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.