Dunan Precision, Inc.

45 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

Sep 2027

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.

3 fees due Apr 1 to 29, 2027 · next Apr 1
1 fee due Jul 28, 2027
The maintenance fee for Method and Structure for Preventing Solder Flow into a MEMS Pressure Port During MEMS Die Attachment (US 10,544,040) comes due Jul 28, 2027. Unpaid by Jan 28, 2028, it lapses early.
2 fees due Aug 11 to 18, 2027 · next Aug 11
1 fee due Sep 17, 2027
The maintenance fee for Metering Valve For A Metered Dose Inhaler (US 10,589,052) comes due Sep 17, 2027. Unpaid by Mar 17, 2028, it lapses early.
2 fees due Nov 5 to 12, 2027 · next Nov 5

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 8,011,388	Thermally Actuated Microvalve with Multiple Fluid Ports In force Term ends Sep 20, 2027 · Medium confidence	In force	Term ends Sep 20, 2027	Medium confidence
US 8,156,962	Microvalve Device In force Term ends Apr 18, 2029 · High confidence	In force	Term ends Apr 18, 2029	High confidence
US 8,393,344	Microvalve Device with Pilot Operated Spool Valve and Pilot Microvalve In force Term ends May 5, 2030 · Medium confidence	In force	Term ends May 5, 2030	Medium confidence
US 8,662,468	Improved Microvalve Device In force Term ends May 9, 2030 · High confidence	In force	Term ends May 9, 2030	High confidence
US 8,387,659	Pilot Operated Spool Valve In force Term ends Jun 2, 2030 · High confidence	In force	Term ends Jun 2, 2030	High confidence
US 8,540,207	Fluid Flow Control Assembly In force Term ends Jun 8, 2030 · High confidence	In force	Term ends Jun 8, 2030	High confidence
US 8,593,811	Method and Structure for Optimizing Heat Exchanger Performance In force Term ends Oct 27, 2030 · Medium confidence	In force	Term ends Oct 27, 2030	Medium confidence
US 8,113,482	Microvalve Device with Improved Fluid Routing In force Term ends Dec 13, 2030 · High confidence	In force	Term ends Dec 13, 2030	High confidence
US 8,956,884	Process for Reconditioning Semiconductor Surface to Facilitate Bonding In force Term ends Jan 26, 2031 · High confidence	In force	Term ends Jan 26, 2031	High confidence
US 9,006,844	Process and Structure for High Temperature Selective Fusion Bonding In force Term ends Jan 26, 2031 · High confidence	In force	Term ends Jan 26, 2031	High confidence

10 of 45 patents shown.

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Pro members: see all 45 patents

Also on record, not counted in the 45: 1 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 no status recorded

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