32 patents currently held

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

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

The next term ends in Aug 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Aug 2027

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 2031 2032 203320342035 2036 2037 2038 2039204020412042204320442045

notable patents fee due within 90 days all others Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 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

Method and Apparatus for Pipe Imaging with Chemical Analysis US 9,927,354

Cited by 23 later US patents, top 25% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2036.

Ends Sep 2036 · High confidence Also notable

Device for Pipe Inspection and Method of Using Same US 8,525,124

Cited by 27 later US patents, top 25% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.

Ends Aug 2031 · High confidence Also notable

Method and Apparatus for Robotic, In-Pipe Water Quality Testing US 10,309,949

The newest of the three, granted 2019. It anchors the portfolio to 2037, later than anything else here.

Ends Mar 2037 · High 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.

2 fees due Dec 4 to 13, 2026 · next Dec 4
1 fee due Feb 8, 2027
The maintenance fee for Underground Infrastructure Sensing Using Unmanned Aerial Vehicle (UAV) (US 11,719,853) comes due Feb 8, 2027. Unpaid by Aug 9, 2027, it lapses early.
1 fee due Apr 13, 2027
The maintenance fee for Managing Infrastructure Data (US 9,156,105) comes due Apr 13, 2027. Unpaid by Oct 13, 2027, it lapses early.
1 fee due May 10, 2027
The maintenance fee for Analyzing Infrastructure Data (US 9,183,527) comes due May 10, 2027. Unpaid by Nov 10, 2027, it lapses early.
1 fee due Jul 9, 2027
The maintenance fee for Image Processing Techniques for Multi-Sensor Inspection of Pipe Interiors (US 11,867,641) comes due Jul 9, 2027. Unpaid by Jan 10, 2028, it lapses early.
1 fee due Aug 20, 2027
The maintenance fee for Managing Infrastructure Data (US 11,908,048) comes due Aug 20, 2027. Unpaid by Feb 22, 2028, it lapses early.
1 fee due Oct 2, 2027
The maintenance fee for Multiple Camera Imager for Inspection of Large Diameter Pipes, Chambers or Tunnels (US 11,949,989) comes due Oct 2, 2027. Unpaid by Apr 3, 2028, it lapses early.
1 fee due Nov 12, 2027
The maintenance fee for Augmented Reality (AR) Display of Pipe Inspection Data (US 10,649,450) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

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

What they patent

The 5 largest of its 20 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Managing Infrastructure Data	4 in force	to Jun 2033
Method and Apparatus for Pipe Imaging with Chemical Analysis	3 in force	to Mar 2037
Device for Pipe Inspection and Method of Using Same	3 in force	to Aug 2031
Image Processing Techniques for Multi-Sensor Inspection of Pipe Interiors	2 in force	to Jul 2039
Underground Infrastructure Sensing Using Unmanned Aerial Vehicle (UAV)	2 in force	to May 2039

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,993,469	Sensor Based Micro-Cleaning of Buried Infrastructure In force Term ends Aug 22, 2027 · High confidence	In force	Term ends Aug 22, 2027	High confidence
US 8,467,049	Manhole Modeler Using a Plurality of Scanners to Monitor the Conduit Walls and Exterior In force Term ends Sep 17, 2027 · High confidence	In force	Term ends Sep 17, 2027	High confidence
US 8,024,066	Autonomous Inspector Mobile Platform In force Term ends Oct 20, 2027 · High confidence	In force	Term ends Oct 20, 2027	High confidence
US 7,720,570	Network Architecture for Remote Robot with Interchangeable Tools In force Term ends Nov 18, 2028 · High confidence	In force	Term ends Nov 18, 2028	High confidence
US 8,041,517	Spatio-Temporal and Context-Based Indexing and Representation of Subterranean Networks and Means for Doing the Same In force Term ends Oct 10, 2029 · High confidence	In force	Term ends Oct 10, 2029	High confidence
US 9,739,792	Device for Pipe Inspection and Method of Using Same In force Term ends Jan 5, 2030 · High confidence	In force	Term ends Jan 5, 2030	High confidence
US 9,482,681	Device for Pipe Inspection and Method of Using Same In force Term ends May 15, 2030 · High confidence	In force	Term ends May 15, 2030	High confidence
US 8,525,124	Device for Pipe Inspection and Method of Using Same In force Term ends Aug 11, 2031 · High confidence	In force	Term ends Aug 11, 2031	High confidence
US 10,221,987	Managing Infrastructure Data In force Term ends Oct 17, 2032 · High confidence	In force	Term ends Oct 17, 2032	High confidence
US 10,783,680	Server-Based Management of Robotic Pipe Inspection Data and Analysis Reports In force Term ends Oct 17, 2032 · High confidence	In force	Term ends Oct 17, 2032	High confidence

10 of 32 patents shown.

Pro members see all 32.

Pro members: see all 32 patents

Also on record, not counted in the 32: 3 patents ended · 3 applications pending · 1 application 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

Redzone Robotics, Inc.