127 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Aug 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
22
Ending by 2030
Aug 2027
Next term end
31
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Sep 2033 · High confidence
Also notable
Ends no later than Mar 2034 · Medium confidence
Also notable
Ends Jun 2035 · High confidence
Rotorcraft Advanced Autopilot Control Arrangement and Methods
US 10,843,796
Cited by 39 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2033.
Advanced Drill String Communication System, Components and Methods
US 9,274,243
The most cited patent in this portfolio, cited by 114 later US patents, top 5% of utility patents granted in 2016 in our data. Protection runs to 2034. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
Directional Drilling Target Steering Apparatus and Method
US 9,540,879
Cited by 72 later US patents, top 5% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2035.
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Dec 25, 2026The maintenance fee for Advanced Drill String Inground Isolator Housing in an MWD System and Associated Method (US 10,329,895) comes due Dec 25, 2026. Unpaid by Jun 25, 2027, it lapses early.
- 2 fees due Jan 16 to 25, 2027 · next Jan 16
- 1 fee due Feb 13, 2027The maintenance fee for Advanced Passive Interference Management in Directional Drilling System, Apparatus and Methods (US 10,378,338) comes due Feb 13, 2027. Unpaid by Aug 13, 2027, it lapses early.
- 4 fees due Apr 1 to 30, 2027 · next Apr 1
- 6 fees due May 5 to 28, 2027 · next May 5
- 3 fees due Jun 24 to 30, 2027 · next Jun 24
- 1 fee due Jul 9, 2027The maintenance fee for Advanced Inground Device Power Control and Associated Methods (US 11,867,057) comes due Jul 9, 2027. Unpaid by Jan 10, 2028, it lapses early.
- 2 fees due Aug 4 to 18, 2027 · next Aug 4
- 4 fees due Sep 1 to 24, 2027 · next Sep 1
- 2 fees due Oct 12 to 30, 2027 · next Oct 12
- 1 fee due Nov 12, 2027The maintenance fee for Inground Device with Advanced Transmit Power Control and Associated Methods (US 10,648,326) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
What they patent
The 5 largest of its 31 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Sonde with Integral Pressure Sensor and Method | 8 in force | to Dec 2031 |
| Advanced Passive Interference Management in Directional Drilling System, Apparatus and Methods | 7 in force | to Jun 2037 |
| Mechanical Shock Resistant MEMS Accelerometer Arrangement, Associated Method, Apparatus and System | 7 in force | to Jul 2035 |
| Measurement Device and Associated Method for Use in Frequency Selection for Inground Transmission | 7 in force | to Mar 2033 |
| Emergency Collective Actuator and Method for a Helicopter | 7 in force | to Dec 2031 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,133,703 | Advanced Steering Tool System, Method and Apparatus In force · Medium confidence | In force | Medium confidence | |
| US 10,273,796 | Advanced Steering Tool System, Method and Apparatus In force · High confidence | In force | High confidence | |
| US 10,584,573 | Advanced Steering Tool System, Method and Apparatus In force · High confidence | In force | High confidence | |
| US 11,035,218 | Advanced Steering Tool System, Method and Apparatus In force · Medium confidence | In force | Medium confidence | |
| US 7,775,301 | Advanced Steering Tool System, Method and Apparatus In force · High confidence | In force | High confidence | |
| US 10,520,536 | Apparatus for Predicting a Maximum Operational Depth for an Underground Drilling Procedure and Method In force · High confidence | In force | High confidence | |
| US 10,598,712 | Portable Device with Electromagnetic Noise Measurement for Inground Transmitter Frequency Selection In force · High confidence | In force | High confidence | |
| US 11,047,896 | Portable Device with Electromagnetic Noise Measurement at Multiple Frequencies In force · High confidence | In force | High confidence | |
| US 11,320,474 | Portable Device for Noise Measurement at Locations Along a Path to Determine One or More Indications In force · High confidence | In force | High confidence | |
| US 11,802,900 | Portable Device With Removably Attachable Measuring Leg In force · High confidence | In force | High confidence |
Also on record, not counted in the 127: 178 patents ended · 13 applications pending · 16 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.