Digital Control Incorporated
46Patents
0Active
46Granted
37Portfolio score
Filing activity: Jun 14, 1994 → Sep 18, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6035951A | System for tracking and/or guiding an underground boring tool | Electricity | 165 | Expired |
| US6496008B1 | Flux plane locating in an underground drilling system | Physics | 144 | Expired |
| US6223826A | Auto-extending/retracting electrically isolated conductors in a segmented drill string | Fixed Constructions | 139 | Expired |
| US6005532A | Orthogonal antenna arrangement and method | Electricity | 104 | Expired |
| US5698981A | Technique for establishing at least a portion of an underground path of a boring tool | Physics | 103 | Expired |
| US6285190A | Skin depth compensation in underground boring applications | Physics | 92 | Expired |
| US6279668A | Boring tool control using remote locator including a command generation arrangement and method | Fixed Constructions | 85 | Expired |
| US5764062A | Technique for establishing and recording a boring tool path using a survey reference level | Physics | 78 | Expired |
| US6417666B1 | Boring tool tracking system and method using magnetic locating signal and wire-in-pipe data | Physics | 77 | Expired |
| US5767678A | Position and orientation locator/monitor | Physics | 76 | Expired |
| US6079506A | Boring tool control using remote locator | Fixed Constructions | 75 | Expired |
| US6250402A | Establishing positions of locating field detectors and path mappings in underground boring tool applications | Physics | 59 | Expired |
| US5444382A | Position and orientation locator/monitor | Physics | 47 | Expired |
| US5961252A | Underground utility installation tension monitoring arrangement and method | Fixed Constructions | 46 | Expired |
| US5933008A | Boring technique using locate point measurements for boring tool depth determination | Physics | 45 | Expired |
| US6160401A | Boring technique using locate point measurements for boring tool depth prediction | Physics | 45 | Expired |
| US6446728B2 | Auto-extending/retracting electrically isolated conductors in a segmented drill string | Fixed Constructions | 44 | Expired |
| US6232780A | Underground locating using a locating signal transmitter configured with a single antenna | Physics | 39 | Expired |
| US6191585A | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal | Physics | 37 | Expired |
| US6047783A | Systems, arrangements and associated methods for tracking and/or guiding an underground boring tool | Electricity | 36 | Expired |
| US6014026A | Boring technique for using locate point measurements for boring tool depth prediction | Physics | 35 | Expired |
| US6095260A | System, arrangements and associated methods for tracking and/or guiding an underground boring tool | Electricity | 31 | Expired |
| US5757190A | System including an arrangement for tracking the positional relationship between a boring tool and one or more buried lines and method | Physics | 30 | Expired |
| US6008651A | Orientation sensor arrangement and method for use in a system for monitoring the orientation of an underground boring tool | Physics | 27 | Expired |
| US6057687A | Two mode boring tool guiding system and method | Physics | 24 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.