369 patents currently held
3 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 Dec 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
90
Ending by 2030
Dec 2026
Next term end
330
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 Aug 2035 · High confidence
Also notable
Ends Apr 2032 · High confidence
Also notable
Ends Nov 2028 · High confidence
Magnetic Flowmeter with Power Limit and Over-Current Detection
US 10,663,331
Cited by 12 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2035.
Variable Frequency Magnetic Flowmeter
US 9,182,258
Cited by 17 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2032.
Flow Disturbance Compensation for Magnetic Flowmeter
US 7,779,702
Cited by 30 later US patents, top 25% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
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.
- 5 fees due Dec 6 to 30, 2026 · next Dec 6
- 1 fee due Jan 30, 2027The maintenance fee for Vortex Flowmeter with Reduced Intrusion by Providing Piezoelectric Sensors Externally of the Flow Tube (US 10,365,134) comes due Jan 30, 2027. Unpaid by Jul 30, 2027, it lapses early.
- 4 fees due Feb 4 to 28, 2027 · next Feb 4
- 9 fees due Mar 5 to 24, 2027 · next Mar 5
- 10 fees due Apr 1 to 30, 2027 · next Apr 1
- 7 fees due May 3 to 26, 2027 · next May 3
- 8 fees due Jun 1 to 30, 2027 · next Jun 1
- 9 fees due Jul 2 to 30, 2027 · next Jul 2
- 8 fees due Aug 4 to 27, 2027 · next Aug 4
- 9 fees due Sep 17 to 30, 2027 · next Sep 17
- 10 fees due Oct 2 to 21, 2027 · next Oct 2
- 4 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 2 of the patents on this record were granted since Aug 16, 2026
- 7 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 330 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Flow Meter Housing | 11 in force | to Feb 2040 |
| Flanged Reducer Vortex Flowmeter | 4 in force | to Aug 2035 |
| Vibratory Flow Meter with Multichannel Flow Tube | 3 in force | to Feb 2038 |
| Vibratory Flowmeter and Methods and Diagnostics for Meter Verification | 3 in force | to Jun 2036 |
| Variable Frequency Magnetic Flowmeter | 3 in force | to Oct 2033 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,165,830 | Meter Electronics and Methods for Determining a Phase Difference Between a First Sensor Signal and a Second Sensor Signal of a Flow Meter In force · High confidence | In force | High confidence | |
| US D674,302 | Flow Meter Housing In force · Medium confidence | In force | Medium confidence | |
| US 7,908,097 | Methods and Meter Electronics for Rapidly Detecting a Non-Uniformity of a Material Flowing Through a Coriolis Flowmeter In force · High confidence | In force | High confidence | |
| US D675,122 | Flow Meter Housing In force · Medium confidence | In force | Medium confidence | |
| US 7,805,261 | Meter Electronics and Methods for Rapidly Determining a Mass Fraction of a Multi-Phase Fluid from a Coriolis Flow Meter Signal In force · High confidence | In force | High confidence | |
| US 8,122,754 | Meter Proving Method and System In force · High confidence | In force | High confidence | |
| US 7,996,160 | Meter Electronics and Methods for Determining Void Fraction of Gas In force · High confidence | In force | High confidence | |
| US 7,940,533 | Step-Down Voltage Converter In force · High confidence | In force | High confidence | |
| US 7,900,338 | A Method of Making a Transducer Having a Plastic Matching Layer In force · High confidence | In force | High confidence | |
| US 7,983,855 | Meter Electronics and Methods for Generating a Drive Signal for a Vibratory Flowmeter In force · High confidence | In force | High confidence |
Also on record, not counted in the 369: 3 patents in force now held by others · 76 patents ended · 75 applications 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.