Stolar, Inc.
43Patents
18Active
43Granted
46Portfolio score
Filing activity: May 6, 1985 → Dec 16, 2016 · 8 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4968978A | Long range multiple point wireless control and monitoring system | Physics | 121 | Expired |
| US5087099A | Long range multiple point wireless control and monitoring system | Physics | 86 | Expired |
| US4879755A | Medium frequency mine communication system | Electricity | 71 | Expired |
| US5686841A | Apparatus and method for the detection and measurement of liquid water and ice layers on the surfaces of solid materials | Physics | 64 | Expired |
| US5268683A | Method of transmitting data from a drillhead | Physics | 57 | Expired |
| US4753484A | Method for remote control of a coal shearer | Fixed Constructions | 53 | Expired |
| US5769503A | Method and apparatus for a rotating cutting drum or arm mounted with paired opposite circular polarity antennas and resonant microstrip patch transceiver for measuring coal, trona and potash layers forward, side and around a continuous mining machine | Fixed Constructions | 43 | Expired |
| US7659847B2 | Radar mining guidance control system | Physics | 40 | Active |
| US4742305A | Method for constructing vertical images of anomalies in geological formations | Physics | 37 | Expired |
| US5260660A | Method for calibrating a downhole receiver used in electromagnetic instrumentation for detecting an underground conductor | Physics | 35 | Expired |
| US5066917A | Long feature vertical or horizontal electrical conductor detection methodology using phase coherent electromagnetic instrumentation | Physics | 34 | Expired |
| US4994747A | Method and apparatus for detecting underground electrically conductive objects | Physics | 32 | Expired |
| US7656342B2 | Double-sideband suppressed-carrier radar to null near-field reflections from a first interface between media layers | Physics | 31 | Active |
| US5093929A | Medium frequency mine communication system | Electricity | 27 | Expired |
| US5072172A | Method and apparatus for measuring the thickness of a layer of geologic material using a microstrip antenna | Physics | 27 | Expired |
| US4577153A | Continuous wave medium frequency signal transmission survey procedure for imaging structure in coal seams | Physics | 24 | Expired |
| US5181934A | Method for automatically adjusting the cutting drum position of a resource cutting machine | Physics | 24 | Expired |
| US5121971A | Method of measuring uncut coal rib thickness in a mine | Physics | 19 | Expired |
| US8115622B2 | Underground radio communications and personnel tracking system | Electricity | 18 | Active |
| US7675289B1 | Underground anomalies detection vehicle and trailer | Physics | 18 | Active |
| US5185578A | Method for detecting anomalous geological zones by transmitting electromagnetic energy between spaced drillholes using different frequency ranges | Physics | 17 | Expired |
| US5146611A | Mine communication cable and method for use | Electricity | 16 | Expired |
| US5301082A | Current limiter circuit | Electricity | 16 | Expired |
| US5188426A | Method for controlling the thickness of a layer of material in a seam | Physics | 15 | Expired |
| US4691166A | Electromagnetic instruments for imaging structure in geologic formations | Physics | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.