Dadco, Inc.

22 patents currently held · Updated Nov 14, 2026

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

Recorded under 2 name spellings.

Ending by 2030

Jul 2028

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 Mar 29, 2027
The maintenance fee for Toe clamp, and related manufacturing method, clamping arrangement, and fixture (US 9,144,864) comes due Mar 29, 2027. Unpaid by Sep 29, 2027, it lapses early.
1 fee due Jul 7, 2027
The maintenance fee for Overtravel pressure relief for a gas spring (US 10,527,121) comes due Jul 7, 2027. Unpaid by Jan 7, 2028, it lapses early.
2 fees due Oct 16, 2027

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

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 7,739,871	Press-driven tool actuation system In force Term ends Jul 1, 2028 · From the USPTO record	In force	Term ends Jul 1, 2028	From the USPTO record
US 7,870,832	Pressure indicating device In force Term ends Jan 1, 2029 · From the USPTO record	In force	Term ends Jan 1, 2029	From the USPTO record
US 7,861,569	Reaction device for forming equipment In force Term ends Nov 4, 2029 · From the USPTO record	In force	Term ends Nov 4, 2029	From the USPTO record
US 8,490,763	Delay return gas spring In force Term ends Apr 4, 2030 · From the USPTO record	In force	Term ends Apr 4, 2030	From the USPTO record
US 8,444,122	Gas spring with guide In force Term ends Oct 5, 2030 · From the USPTO record	In force	Term ends Oct 5, 2030	From the USPTO record
US 8,348,249	Reaction device for forming equipment In force Term ends Jul 15, 2031 · From the USPTO record	In force	Term ends Jul 15, 2031	From the USPTO record
US 8,567,227	Guide and retention assembly for a die set In force Term ends Apr 20, 2032 · From the USPTO record	In force	Term ends Apr 20, 2032	From the USPTO record
US 9,416,840	Gas spring In force Term ends Oct 15, 2032 · From the USPTO record	In force	Term ends Oct 15, 2032	From the USPTO record
US 9,046,146	Gas Spring and Gas Spring Components In force Term ends Mar 25, 2033 · High confidence	In force	Term ends Mar 25, 2033	High confidence
US 9,551,394	Overtravel pressure relief for a gas spring In force Ends no later than Sep 19, 2033 · From the USPTO record	In force	Ends no later than Sep 19, 2033	From the USPTO record

10 of 22 patents shown.

Pro members see all 22.

Pro members: see all 22 patents

Also on record, not counted in the 22: 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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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.

2 pending · 4 no status recorded

List them