5 patents currently held
47 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Jan 2039. from the record
Of the 47 now held by other companies, 35 name Allumax Tti LLC as their current owner, and 12 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Jan 2039
Next term end
3
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 Jan 2039 · High confidence
Also notable
Ends Apr 2041 · Medium confidence
Also notable
Ends no later than Apr 2039 · Low confidence
Electromagnetic Impedance Spectroscopy Apparatus and Related Planar Sensor System
US 11,268,922
The most cited patent in this portfolio, cited by 5 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2039.
Methods, Circuits and Systems for Obtaining Impedance or Dielectric Measurements of a Material Under Test
US 11,604,155
The newest of the three, granted 2023. It anchors the portfolio to 2041, later than anything else here.
Parallel Plate Capacitor System for Determining Impedance Characteristics of Material Under Test (MUT)
US 11,592,432
The newest of the three, granted 2023. It anchors the portfolio to 2039, later than anything else here. 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.
Formerly held, still cited
Notable
Ends Sep 2038 · High confidence
Cited by 16 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2038. A terminal disclaimer caps this term to an earlier patent's.
now held by Allumax Tti, LLC
Also notable
Ends Jan 2032 · High confidence
Cited by 35 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2032.
now held by Skyworks Solutions, Inc.
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 20, 2026The maintenance fee for Electromagnetic Impedance Spectroscopy Apparatus and Related Planar Sensor System (US 11,680,920) comes due Dec 20, 2026. Unpaid by Jun 21, 2027, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
Showing 1 to 5 of 5
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 11,268,922 | Electromagnetic Impedance Spectroscopy Apparatus and Related Planar Sensor System held by Transtech Systems, Inc. In force · High confidence | In force | High confidence | |
| US 11,680,920 | Electromagnetic Impedance Spectroscopy Apparatus and Related Planar Sensor System held by Transtech Systems, Inc. In force · High confidence | In force | High confidence | |
| US 12,560,565 | Electromagnetic Impedance Spectroscopy Apparatus and Related Planar Sensor System held by Transtech Systems, Inc. In force · High confidence | In force | High confidence | |
| US 11,592,432 | Parallel Plate Capacitor System for Determining Impedance Characteristics of Material Under Test (MUT) held by Transtech Systems, Inc. In force · Low confidence | In force | Low confidence | |
| US 11,604,155 | Methods, Circuits and Systems for Obtaining Impedance or Dielectric Measurements of a Material Under Test held by Transtech Systems, Inc. In force · Medium confidence | In force | Medium confidence |
Also on record, not counted in the 5: 47 patents in force now held by others · 7 patents ended · 1 application pending · 8 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.