Hydro-Quebec
14 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.
Recorded under 8 name spellings.
15
Ending by 2030
Nov 2026
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
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.
- 3 fees due Nov 16 to 30, 2026 · next Nov 16
- 3 fees due Dec 6 to 25, 2026 · next Dec 6
- 1 fee due Jan 18, 2027The maintenance fee for Additive for Electrolytes (US 11,705,579) comes due Jan 18, 2027. Unpaid by Jul 19, 2027, it lapses early.
- 5 fees due Feb 1 to 13, 2027 · next Feb 1
- 3 fees due Mar 1 to 5, 2027 · next Mar 1
- 2 fees due May 5 to 7, 2027 · next May 5
- 1 fee due Jun 10, 2027The maintenance fee for Secondary Battery, Battery Pack, Electric Vehicle, Electric Power Storage System, Electric Power Tool, and Electronic Apparatus (US 10,505,175) comes due Jun 10, 2027. Unpaid by Dec 10, 2027, it lapses early.
- 3 fees due Jul 2 to 16, 2027 · next Jul 2
- 2 fees due Aug 2 to 27, 2027 · next Aug 2
- 3 fees due Sep 12 to 22, 2027 · next Sep 12
- 1 fee due Oct 14, 2027The maintenance fee for Synthesis and Hydrogen Storage Properties of Novel Manganese Hydrides (US 10,622,655) comes due Oct 14, 2027. Unpaid by Apr 14, 2028, it lapses early.
- 1 fee due Nov 7, 2027The maintenance fee for Battery safety vent assembly (US 11,978,919) comes due Nov 7, 2027. Unpaid by May 8, 2028, it lapses early.
Recent changes
- 2 of the patents on this record were granted since Aug 16, 2026
- 3 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,950,298 | Motorized bracelet assembly for moving sensor modules around a pipe In force · From the USPTO record | In force | From the USPTO record | |
| US 8,048,561 | Process for the Preparation of an Electrode from a Porous Material, Electrode Thus Obtained and Corresponding Electrochemical System In force · High confidence | In force | High confidence | |
| US 10,811,731 | Electrolyte Purification Method Using Calcium Carbide, and Electrolytes Thus Obtained In force · High confidence | In force | High confidence | |
| US 9,034,490 | Multilayer material, method for making same and use as electrode In force · From the USPTO record | In force | From the USPTO record | |
| US 7,800,051 | Apparatus and method for monitoring snow water equivalent and soil moisture content using natural gamma radiation In force · From the USPTO record | In force | From the USPTO record | |
| US 8,126,664 | Detection, localization and interpretation of partial discharge In force · From the USPTO record | In force | From the USPTO record | |
| US 9,293,769 | Electrode coated with a film obtained from an aqueous solution comprising a water-soluble binder, production method thereof and uses of same In force · From the USPTO record | In force | From the USPTO record | |
| US 10,144,674 | Process for Preparing Ceramics, Ceramics Thus Obtained and Uses Thereof, Especially as a Sputtering Target In force · Medium confidence | In force | Medium confidence | |
| US 9,972,865 | Rechargeable electrochemical accumulator In force · From the USPTO record | In force | From the USPTO record | |
| US 8,298,582 | Polysaccharide-based impregnated solid material with improved stability, processes for the preparation thereof and impregnating solutions used In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 114: 14 patents in force now held by others · 67 lapsed for an unpaid fee · 344 ended at full term · 2 surrendered on reissue. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
29 pending · 12 abandoned · 49 no status recorded