Spectra-Physics Laserplane, Inc.
22Patents
0Active
22Granted
34Portfolio score
Filing activity: May 14, 1990 → Jun 2, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5334987A | Agricultural aircraft control system using the global positioning system | Physics | 145 | Expired |
| US5375663A | Earthmoving apparatus and method for grading land providing continuous resurveying | Emerging Cross-Sectional Technologies | 127 | Expired |
| US5287627A | Automatic plumb and level tool with acoustic measuring capability | Emerging Cross-Sectional Technologies | 62 | Expired |
| US5182863A | Automatic plumb and level tool with acoustic measuring capability | Emerging Cross-Sectional Technologies | 61 | Expired |
| US5076690A | Computer aided positioning system and method | Physics | 54 | Expired |
| US5144486A | Laser beam apparatus for providing multiple reference beams | Physics | 44 | Expired |
| US5479431A | Solid-state laser with active etalon and method therefor | Electricity | 38 | Expired |
| US5078215A | Method and apparatus for controlling the slope of a blade on a motorgrader | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5301005A | Method and apparatus for determining the position of a retroreflective element | Physics | 35 | Expired |
| US5440574A | Solid-state laser | Electricity | 33 | Expired |
| US5225928A | Focus compensating lens for use in extreme temperatures | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5257279A | Adjustable focus technique and apparatus using a moveable weak lens | Physics | 21 | Expired |
| US5107932A | Method and apparatus for controlling the blade of a motorgrader | Fixed Constructions | 21 | Expired |
| US5095629A | Laser beam target | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5450429A | Efficient linear frequency doubled solid-state laser | Electricity | 15 | Expired |
| US5420876A | Gadolinium vanadate laser | Electricity | 14 | Expired |
| US5426507A | Laser-based pipe alignment device and method | Physics | 13 | Expired |
| US5465493A | Pipe alignment apparatus and method using green light | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5142963A | Load referenced pressure reducing valve | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5335244A | Technique and apparatus using a moveable weak lens | Physics | 7 | Expired |
| US5227864A | System for leveling workpieces | Physics | 6 | Expired |
| US5166831A | Light beam deflecting apparatus including a fluid | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.