4 patents currently held
49 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.
136 more records may belong here and await a decision; they are not counted.
The next term ends in Feb 2029. from the record
Of the 49 now held by other companies, 40 name Muviq SRL as their current owner, and 9 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
1
Ending by 2030
Feb 2029
Next term end
4
Patent families
When these terms end
Held patents by the year their term ends
notable patents
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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends May 2040 · High confidence
Also notable
Ends Feb 2029 · High confidence
Also notable
Ends Jul 2043 · High confidence
Pulley-Torsional Damper Integrated Group
US 11,549,579
Granted 2023. Computed term ends 2040.
V-Ribbed Belt Having an Outer Surface with Improved Coefficient of Friction
US 8,469,846
Renewed at every maintenance window since the 2013 grant; no more fees are due before its term ends in 2029. A terminal disclaimer caps this term to an earlier patent's.
Power Transmission Belt and Corresponding Transmission System
US 12,729,746
Granted 2026. Too new for citation comparison; protection runs to 2043.
Formerly held, still cited
Notable
Ends Oct 2033 · High confidence
The most cited patent in this portfolio, cited by 52 later US patents, top 10% of utility patents granted in 2015 in our data. Protection runs to 2033.
now held by Dayco IP Holdings, LLC
Also notable
Ends May 2030 · Medium confidence
Cited by 25 later US patents, top 25% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
now held by Muviq S.R.L.
Also notable
Ends Jul 2031 · High confidence
Cited by 21 later US patents, top 25% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.
now held by Muviq S.R.L.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 2 of the patents on this record were granted since Aug 16, 2026
- 2 terms have ended since Aug 16, 2026
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Power Transmission Belt and Corresponding Transmission System | 1 in force | to Jul 2043 |
| Power Transmission Belt and Related Transmission System | 1 in force | to Mar 2043 |
| Pulley-Torsional Damper Integrated Group | 1 in force | to May 2040 |
| V-Ribbed Belt Having an Outer Surface with Improved Coefficient of Friction | 1 in force | to Feb 2029 |
Patents held now
Soonest term end first.
Showing 1 to 4 of 4
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,469,846 | V-Ribbed Belt Having an Outer Surface with Improved Coefficient of Friction held by Dayco IP Holdings, LLC In force · High confidence | In force | High confidence | |
| US 11,549,579 | Pulley-Torsional Damper Integrated Group held by Dayco Europe S.R.L. In force · High confidence | In force | High confidence | |
| US 12,680,595 | Power Transmission Belt and Related Transmission System held by Dayco Europe S.R.L. In force · High confidence | In force | High confidence | |
| US 12,729,746 | Power Transmission Belt and Corresponding Transmission System held by Dayco Europe S.R.L. In force · High confidence | In force | High confidence |
Also on record, not counted in the 4: 49 patents in force now held by others · 112 patents ended · 14 applications pending · 43 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.