The Patent Finder
SD

SDG LLC

First filing 2005
OverviewNotableFeesChangesFamiliesPatent listSources & methods

30 patents currently held

1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Feb 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
5
Ending by 2030
Feb 2027
Next term end
18
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.

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 6, 2026
    The maintenance fee for Drug Delivery System for Treating Disease (US 11,666,654) comes due Dec 6, 2026. Unpaid by Jun 7, 2027, it lapses early.
  • 1 fee due Jan 4, 2027
    The maintenance fee for Method for Supporting Service Level Agreement Monitoring in a Software Defined Network and Corresponding Software Defined Network (US 11,695,648) comes due Jan 4, 2027. Unpaid by Jul 6, 2027, it lapses early.
  • 2 fees due Mar 5 to 10, 2027 · next Mar 5
  • 1 fee due Apr 30, 2027
    The maintenance fee for Security Hardened Processing Device (US 11,803,644) comes due Apr 30, 2027. Unpaid by Nov 1, 2027, it lapses early.
  • 1 fee due May 12, 2027
    The maintenance fee for Resonant Transformer for Downhole Electrocrushing Drilling (US 10,472,894) comes due May 12, 2027. Unpaid by Nov 12, 2027, it lapses early.
  • 2 fees due Jul 16, 2027

Which patents, and when each one lapses · Pro

Recent changes

  • 1 of the patents on this record was granted since Aug 16, 2026
  • 1 term has ended since Aug 16, 2026

What they patent

The 5 largest of its 18 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Patents held now

Soonest term end first.
PatentTitleStatusExpiresConfidence
US 9,016,359Apparatus and Method for Supplying Electrical Power to an Electrocrushing Drill
In force
 · High confidence
In forceHigh confidence
US 10,568,835Orally Bioavailable Lipid-Based Constructs
In force
 · Medium confidence
In forceMedium confidence
US 11,517,529Orally Bioavailable Lipid-Based Constructs
In force
 · High confidence
In forceHigh confidence
US 8,962,015Orally Bioavailable Lipid-Based Constructs
In force
 · High confidence
In forceHigh confidence
US 8,083,008Pressure Pulse Fracturing System
In force
 · High confidence
In forceHigh confidence
US 10,407,995Repetitive Pulsed Electric Discharge Drills Including Downhole Formation Evaluation
In force
 · High confidence
In forceHigh confidence
US 10,060,195Repetitive Pulsed Electric Discharge Apparatuses and Methods of Use
In force
 · High confidence
In forceHigh confidence
US 11,988,092Switches for Downhole Electrocrushing Drilling
In force
 · High confidence
In forceHigh confidence
US 11,746,599High-Power Capacitor for Downhole Electrocrushing Drilling
In force
 · High confidence
In forceHigh confidence
US 10,113,364Method and Apparatus for Isolating and Switching Lower Voltage Pulses from High Voltage Pulses in Electrocrushing and Electrohydraulic Drills
In force
 · High confidence
In forceHigh confidence
10 of 30 patents shown.
Pro members see all 30.
Pro members: see all 30 patents
Also on record, not counted in the 30: 1 patent in force now held by others · 15 patents ended · 5 applications pending · 9 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.
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited