Pressure Pulse Fracturing System

SDG LLC

A patent family: one line of work, grouped by real continuity rather than by a technology label inferred from titles. 2 of these applications claim priority to application 60/603,509, filed Aug 20, 2004. A shared origin can cover several different claimed inventions, which is why members here may not share a title. In-force patents first, soonest term end first, then patent number. Expired patents follow, in the same order.

Patent	Title	Holder	Status	Expires	Time remaining	Confidence
US 9,016,359	Apparatus and Method for Supplying Electrical Power to an Electrocrushing Drill SDG LLC In force Term ends Feb 15, 2027 · High confidence	SDG LLC	In force	Term ends Feb 15, 2027	Term ends Feb 15, 2027	High confidence
US 8,083,008	Pressure Pulse Fracturing System SDG LLC In force Term ends Jul 22, 2029 · High confidence	SDG LLC	In force	Term ends Jul 22, 2029	Term ends Jul 22, 2029	High confidence
US 10,407,995	Repetitive Pulsed Electric Discharge Drills Including Downhole Formation Evaluation SDG LLC In force Term ends Jul 5, 2033 · High confidence	SDG LLC	In force	Term ends Jul 5, 2033	Term ends Jul 5, 2033	High confidence
US 10,060,195	Repetitive Pulsed Electric Discharge Apparatuses and Methods of Use SDG, LLC In force Term ends Aug 28, 2034 · High confidence	SDG, LLC	In force	Term ends Aug 28, 2034	Term ends Aug 28, 2034	High confidence
US 10,113,364	Method and Apparatus for Isolating and Switching Lower Voltage Pulses from High Voltage Pulses in Electrocrushing and Electrohydraulic Drills SDG, LLC In force Term ends Jan 12, 2037 · High confidence	SDG, LLC	In force	Term ends Jan 12, 2037	Term ends Jan 12, 2037	High confidence
US 7,559,378	Portable and Directional Electrocrushing Drill SDG LLC Lapsed Jul 14, 2021 on the fee record Ended Jul 14, 2021 · High confidence	SDG LLC	Lapsed Jul 14, 2021 on the fee record	Ended Jul 14, 2021	Ended Jul 14, 2021	High confidence
US 8,567,522	Apparatus and Method for Supplying Electrical Power to an Electrocrushing Drill SDG, LLC Lapsed Oct 29, 2021 on the fee record Ended Oct 29, 2021 · High confidence	SDG, LLC	Lapsed Oct 29, 2021 on the fee record	Ended Oct 29, 2021	Ended Oct 29, 2021	High confidence
US 8,172,006	Pulsed Electric Rock Drilling Apparatus with Non-Rotating Bit SDG LLC Lapsed May 8, 2024 on the fee record Ended May 8, 2024 · High confidence	SDG LLC	Lapsed May 8, 2024 on the fee record	Ended May 8, 2024	Ended May 8, 2024	High confidence
US 8,186,454	Apparatus and Method for Electrocrushing Rock SDG LLC Lapsed May 29, 2024 on the fee record Ended May 29, 2024 · High confidence	SDG LLC	Lapsed May 29, 2024 on the fee record	Ended May 29, 2024	Ended May 29, 2024	High confidence
US 9,700,893	Virtual Electrode Mineral Particle Disintegrator SDG, LLC Lapsed Jul 11, 2025 on the fee record Ended Jul 11, 2025 · Medium confidence	SDG, LLC	Lapsed Jul 11, 2025 on the fee record	Ended Jul 11, 2025	Ended Jul 11, 2025	Medium confidence
12 more patents in this group · Pro

10 of 22 records shown. In-force patents first, soonest term end first, then patent number. Expired patents follow, in the same order.

Pro members see all 22, including 14 expired and 1 expiring within the 18 months from Nov 15, 2026.

Upgrade to Pro

5 of these are in force and held by SDG LLC.

Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.