40 patents currently held

67 more in force are now held by other companies

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

81 more records may belong here and await a decision; they are not counted.

The next term ends in Nov 2026. from the record

Of the 67 now held by other companies, 34 name SolAero Technologies Corp. as their current owner, and 33 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Nov 2026

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026 2027 2028 2029 203020312032 203320342035203620372038 2039 204020412042 204320442045

notable patents fee due within 90 days all others Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Global Navigation Satellite System (GNSS) Spoofing Detection & Mitigation US 11,163,068

Cited by 16 later US patents, top 10% of utility patents granted in 2021 in our data. Protection runs to 2040.

Ends Feb 2040 · High confidence Also notable

Method of Fabricating and Operating an Optical Modulator US 9,564,734

Cited by 13 later US patents, top 25% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2033.

Ends Mar 2033 · High confidence Also notable

Ohmic N-Contact Formed at Low Temperature in Inverted Metamorphic Multijunction Solar Cells US 8,987,042

Renewed at every maintenance window since the 2015 grant; no more fees are due before its term ends in 2028. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.

Ends no later than Jul 2028 · Low confidence

Formerly held, still cited

Notable

Inverted Metamorphic Multijunction Solar Cells US 8,536,445

Cited by 78 later US patents, top 10% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027. A terminal disclaimer caps this term to an earlier patent's.

now held by SolAero Technologies Corp.

Ends Dec 2027 · High confidence

Also notable

Identification and Authorization of Optoelectronic Modules by Host System US 7,853,150

Cited by 90 later US patents, top 10% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.

now held by Sumitomo Electric Device Innovations, U.S.A., Inc.

Ends Jul 2029 · High confidence

Also notable

Inverted Metamorphic Multijunction Solar Cell with Two Metamorphic Layers and Homojunction Top Cell US 9,117,966

Cited by 39 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2028.

now held by SolAero Technologies Corp.

Ends Mar 2028 · Medium confidence

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 Dec 16, 2026
The maintenance fee for Optical Modulator (US 9,059,801) comes due Dec 16, 2026. Unpaid by Jun 16, 2027, it lapses early.
1 fee due May 17, 2027
The maintenance fee for Gyroscope and Devices with Structural Components Comprising HFO2-TIO2 Material (US 9,188,442) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
1 fee due Sep 10, 2027
The maintenance fee for Wavelength-Stabilized Semiconductor Laser Source (US 10,587,094) comes due Sep 10, 2027. Unpaid by Mar 10, 2028, it lapses early.
5 fees due Oct 5 to 23, 2027 · next Oct 5

Which patents, and when each one lapses · Pro

Recent changes

3 terms have ended since Aug 17, 2026

What they patent

The 5 largest of its 29 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Optical Modulator	6 in force	to Jul 2033
Resonantly vibrating accelerometer with cross-coupling signal suppression	3 in force	to Jun 2042
Gyroscope and Devices with Structural Components Comprising HFO2-TIO2 Material	2 in force	to Jul 2033
Inertial Sensor with Dual Cavity Package and Method of Fabrication	2 in force	to Oct 2029
Four Junction Inverted Metamorphic Multijunction Solar Cell with Two Metamorphic Layers	2 in force	to Apr 2029

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,481,588	Optical Fiber Composite, Devices, and Methods of Making Same In force Term ends Nov 21, 2026 · High confidence	In force	Term ends Nov 21, 2026	High confidence
US 7,461,552	Dual Axis Rate Sensor In force Term ends Feb 9, 2027 · High confidence	In force	Term ends Feb 9, 2027	High confidence
US 7,548,318	Dithering Mechanism for Eliminating Zero-Rate Bias in a Gyroscope In force Term ends Jul 6, 2027 · High confidence	In force	Term ends Jul 6, 2027	High confidence
US 9,356,176	Inverted Metamorphic Multijunction Solar Cell with Metamorphic Layers held by SolAero Technologies Corp. In force Term ends Sep 24, 2027 · High confidence	In force	Term ends Sep 24, 2027	High confidence
US 7,505,140	Indexing Dithering Mechanism and Method In force Term ends Nov 2, 2027 · High confidence	In force	Term ends Nov 2, 2027	High confidence
US 7,634,198	In-Line Distortion Cancellation Circuits for Linearization of Electronic and Optical Signals with Phase and Frequency Adjustment In force Term ends Jan 22, 2028 · High confidence	In force	Term ends Jan 22, 2028	High confidence
US 8,987,042	Ohmic N-Contact Formed at Low Temperature in Inverted Metamorphic Multijunction Solar Cells held by Emcore Solar Power, Inc. In force Ends no later than Jul 16, 2028 · Low confidence	In force	Ends no later than Jul 16, 2028	Low confidence
US 7,746,476	Fiber Optic Gyroscope In force Term ends Oct 1, 2028 · High confidence	In force	Term ends Oct 1, 2028	High confidence
US 9,691,929	Four Junction Inverted Metamorphic Multijunction Solar Cell with Two Metamorphic Layers held by SolAero Technologies Corp. In force Term ends Apr 8, 2029 · Medium confidence	In force	Term ends Apr 8, 2029	Medium confidence
US 8,080,925	Inertial Sensor with Dual Cavity Package and Method of Fabrication In force Term ends Jun 24, 2029 · High confidence	In force	Term ends Jun 24, 2029	High confidence

10 of 40 patents shown.

Pro members see all 40.

Pro members: see all 40 patents

Also on record, not counted in the 40: 67 patents in force now held by others · 243 patents ended · 111 applications abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Export every term end as CSV · Pro

Emcore Corporation