Spatial Positioning Systems, Inc.
6Patents
0Active
6Granted
30Portfolio score
Filing activity: Aug 17, 1990 → Oct 5, 1995
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5100229A | Spatial positioning system | Physics | 186 | Expired |
| US5294970A | Spatial positioning system | Physics | 92 | Expired |
| US5110202A | Spatial positioning and measurement system | Physics | 56 | Expired |
| US5579102A | Transmitter and receiver units for spatial position measurement system | Physics | 54 | Expired |
| US5461473A | Transmitter and receiver units for spatial position measurement system | Physics | 28 | Expired |
| US5247487A | Spatial measurement recovery system | Emerging Cross-Sectional Technologies | 27 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.