Comtesco Corporation

26 patents currently held · Updated Nov 15, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

Feb 2028

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

No maintenance fee falls due on this company's record before Nov 15, 2027.

Recent changes

1 of the patents on this record was granted since Aug 17, 2026
1 term has ended since Aug 17, 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 7,549,241	Hydraulic Control Device for Loader In force Term ends Feb 11, 2028 · High confidence	In force	Term ends Feb 11, 2028	High confidence
US 8,777,574	Windmill Pitch Driving Apparatus In force Term ends Mar 23, 2031 · High confidence	In force	Term ends Mar 23, 2031	High confidence
US 8,726,786	Stack Valve Having Bucket Parallel Movement Function In force Term ends Jul 1, 2031 · High confidence	In force	Term ends Jul 1, 2031	High confidence
US 8,823,200	Drive Unit for Windmill In force Term ends Aug 19, 2031 · High confidence	In force	Term ends Aug 19, 2031	High confidence
US 8,991,168	Liquid Pressure Motor In force Term ends Dec 12, 2031 · High confidence	In force	Term ends Dec 12, 2031	High confidence
US 8,977,443	Hybrid Construction Machine Control System In force Term ends Dec 16, 2031 · High confidence	In force	Term ends Dec 16, 2031	High confidence
US 8,607,821	Stack Valve In force Term ends Dec 28, 2031 · High confidence	In force	Term ends Dec 28, 2031	High confidence
US 8,631,820	Hydraulic Control Valve for Construction Machinery In force Term ends Jan 28, 2032 · High confidence	In force	Term ends Jan 28, 2032	High confidence
US 8,694,213	Construction Machine with Hybrid Drive Unit, Regenerative Device Equipped in Construction Machine, and Regenerative Method In force Term ends Feb 20, 2033 · High confidence	In force	Term ends Feb 20, 2033	High confidence
US 9,435,399	Reduction Gear In force Term ends Apr 29, 2033 · High confidence	In force	Term ends Apr 29, 2033	High confidence

10 of 26 patents shown.

Pro members see all 26.

Pro members: see all 26 patents

Also on record, not counted in the 26: 2 ended at full term. 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.

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