InstroTek, Inc.

9 patents currently held · Updated Nov 14, 2026

1 more in force is now held by another company

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

Recorded under 2 name spellings.

Ending by 2030

Jun 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 14, 2027.

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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US D706,146	Nuclear gauge calibration device In force Term ends Jun 3, 2028 · From the USPTO record	In force	Term ends Jun 3, 2028	From the USPTO record
US 8,312,776	System and method for conditioning and detection of susceptibility to moisture damage in asphalt mixes In force Ends no later than Jul 9, 2028 · From the USPTO record	In force	Ends no later than Jul 9, 2028	From the USPTO record
US D738,750	Moisture and density nuclear gauge calibration device In force Term ends Sep 15, 2029 · From the USPTO record	In force	Term ends Sep 15, 2029	From the USPTO record
US 8,020,451	System and method for conditioning and detection of moisture damage in asphalt mixes In force Term ends Sep 24, 2029 · From the USPTO record	In force	Term ends Sep 24, 2029	From the USPTO record
US RE45,937	Lightweight portable moisture traps for use with vacuum pumps In force Term ends Mar 3, 2031 · From the USPTO record	In force	Term ends Mar 3, 2031	From the USPTO record
US RE46,616	Lightweight portable moisture traps for use with vacuum pumps In force Ends no later than Mar 3, 2031 · From the USPTO record	In force	Ends no later than Mar 3, 2031	From the USPTO record
US 10,215,678	Systems and methods for maximum specific gravity tests for asphalt mixture samples In force Term ends Mar 22, 2037 · From the USPTO record	In force	Term ends Mar 22, 2037	From the USPTO record
US 10,753,838	Systems and methods for verification and calibration of hamburg wheel tracker devices In force Term ends Feb 20, 2039 · From the USPTO record	In force	Term ends Feb 20, 2039	From the USPTO record
US 11,009,450	Systems and methods for quality testing of asphalt by predicting an indirect tensile strength ratio of the asphalt sample based on the binder loss value In force Term ends Dec 30, 2039 · From the USPTO record	In force	Term ends Dec 30, 2039	From the USPTO record

Also on record, not counted in the 9: 1 patent in force now held by others · 1 lapsed for an unpaid fee · 14 ended at full term · 1 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.

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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 abandoned · 1 no status recorded

List them