Quadco Inc.

10 patents currently held · Updated Nov 14, 2026

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

Ending by 2030

Nov 2026

Next term end

When these terms end

5 yrs10 yrs20 yrs

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.

1 fee due Apr 27, 2027
The maintenance fee for Saw disk with improved chip discharge (US 9,168,599) comes due Apr 27, 2027. Unpaid by Oct 27, 2027, it lapses early.
1 fee due Aug 18, 2027
The maintenance fee for Forestry device with articulated accumulating arm (US 10,561,075) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted 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.

Showing 1 to 10 of 10

Patent	Title	Status	Expires	Confidence
US 7,828,026	Rotary cutting machine with reversible teeth In force Term ends Nov 16, 2026 · From the USPTO record	In force	Term ends Nov 16, 2026	From the USPTO record
US 7,913,432	Cutting tooth assembly with reversible tooth In force Ends no later than Nov 16, 2026 · From the USPTO record	In force	Ends no later than Nov 16, 2026	From the USPTO record
US 7,634,897	Rotary cutting machine with replaceable cutting teeth In force Term ends Jun 14, 2027 · From the USPTO record	In force	Term ends Jun 14, 2027	From the USPTO record
US 7,713,006	Reversible saw tooth In force Term ends Mar 24, 2028 · From the USPTO record	In force	Term ends Mar 24, 2028	From the USPTO record
US 8,061,396	Tooth for a circular saw or mower drum In force Term ends Jun 5, 2029 · From the USPTO record	In force	Term ends Jun 5, 2029	From the USPTO record
US 9,168,599	Saw disk with improved chip discharge In force Term ends Oct 4, 2032 · From the USPTO record	In force	Term ends Oct 4, 2032	From the USPTO record
US D812,115	Tooth for mechanical equipment In force Term ends Mar 6, 2033 · From the USPTO record	In force	Term ends Mar 6, 2033	From the USPTO record
US 10,561,075	Forestry device with articulated accumulating arm In force Term ends Jun 17, 2034 · From the USPTO record	In force	Term ends Jun 17, 2034	From the USPTO record
US D1,131,566	Tooth for rotary disc or drum of forestry machinery In force Term ends Jun 23, 2041 · High confidence	In force	Term ends Jun 23, 2041	High confidence
US D1,150,167	Tooth for a Rotary Disc or Drum In force Term ends Sep 29, 2041 · High confidence	In force	Term ends Sep 29, 2041	High confidence

Also on record, not counted in the 10: 7 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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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.

3 pending

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