BT Imaging Pty Ltd

11 patents currently held · Updated Nov 15, 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

Mar 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.

1 fee due Nov 19, 2026
The maintenance fee for In-line photoluminescence imaging of semiconductor devices (US 9,035,267) comes due Nov 19, 2026. Unpaid by May 19, 2027, it lapses early.
1 fee due Apr 13, 2027
The maintenance fee for Separation of doping density and minority carrier lifetime in photoluminescence measurements on semiconductor materials (US 9,157,863) comes due Apr 13, 2027. Unpaid by Oct 13, 2027, it lapses early.
1 fee due Jun 10, 2027
The maintenance fee for Methods for inspecting semiconductor wafers (US 10,502,687) comes due Jun 10, 2027. Unpaid by Dec 10, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

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 9,909,991	Method and system for inspecting indirect bandgap semiconductor structure In force Term ends Mar 3, 2027 · From the USPTO record	In force	Term ends Mar 3, 2027	From the USPTO record
US 9,912,291	Method and system for testing indirect bandgap semiconductor devices using luminescence imaging In force Ends no later than May 4, 2027 · From the USPTO record	In force	Ends no later than May 4, 2027	From the USPTO record
US 9,482,625	Method and system for testing indirect bandgap semiconductor devices using luminescence imaging In force Term ends Dec 29, 2027 · From the USPTO record	In force	Term ends Dec 29, 2027	From the USPTO record
US 9,546,955	Wafer Imaging and Processing Method and Apparatus In force Term ends Mar 31, 2029 · High confidence	In force	Term ends Mar 31, 2029	High confidence
US 8,710,860	Method and System for Testing Indirect Bandgap Semiconductor Devices Using Luminescence Imaging In force Term ends Feb 10, 2030 · High confidence	In force	Term ends Feb 10, 2030	High confidence
US 8,483,476	Photovoltaic Cell Manufacturing In force Term ends May 5, 2030 · High confidence	In force	Term ends May 5, 2030	High confidence
US 9,157,863	Separation of doping density and minority carrier lifetime in photoluminescence measurements on semiconductor materials In force Term ends Jul 19, 2030 · From the USPTO record	In force	Term ends Jul 19, 2030	From the USPTO record
US 9,035,267	In-line photoluminescence imaging of semiconductor devices In force Term ends Jul 23, 2031 · From the USPTO record	In force	Term ends Jul 23, 2031	From the USPTO record
US 10,241,051	Methods for Inspecting Semiconductor Wafers In force Ends no later than Jul 5, 2033 · Low confidence	In force	Ends no later than Jul 5, 2033	Low confidence
US 10,502,687	Methods for inspecting semiconductor wafers In force Ends no later than Jul 5, 2033 · From the USPTO record	In force	Ends no later than Jul 5, 2033	From the USPTO record

10 of 11 patents shown.

Pro members see all 11.

Pro members: see all 11 patents

Also on record, not counted in the 11: 7 lapsed for an unpaid fee. 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.

1 abandoned · 9 no status recorded

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