41 patents currently held

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.

1 more record may belong here and awaits a decision; it is not counted.

The next term ends in Nov 2038. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Nov 2038

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029203020312032203320342035203620372038 203920402041 2042 204320442045

notable patents 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.

Notable patents

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

Notable

Air Quality Monitoring System and Method US 11,366,057

The most cited patent in this portfolio, cited by 55 later US patents, top 5% of utility patents granted in 2022 in our data. Protection runs to 2041.

Ends Sep 2041 · Medium confidence Also notable

Air Quality Monitoring System and Enhanced Spectrophotometric Chemical Sensor US 11,193,822

The most cited patent in this portfolio, cited by 55 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2038.

Ends Nov 2038 · High confidence Also notable

Air Sampling Actuator and Associated Method US 11,573,157

Cited by 36 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2041. A terminal disclaimer caps this term to an earlier patent's.

Ends Mar 2041 · 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 Feb 15 to 22, 2027 · next Feb 15
2 fees due Mar 12 to 26, 2027 · next Mar 12
6 fees due Apr 3 to 30, 2027 · next Apr 3
1 fee due May 7, 2027
The maintenance fee for Air Quality Monitors Minimization System and Methods (US 11,810,216) comes due May 7, 2027. Unpaid by Nov 8, 2027, it lapses early.
4 fees due Jul 2 to 30, 2027 · next Jul 2
2 fees due Aug 6, 2027
2 fees due Oct 2 to 28, 2027 · next Oct 2

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 2026

What they patent

The 3 largest of its 5 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Apparatus and Methods for Reducing Fugitive Gas Emissions at Oil Facilities	28 in force	to Sep 2043
Air Quality Monitoring System and Enhanced Spectrophotometric Chemical Sensor	9 in force	to Nov 2038
Air Sampling Actuator and Associated Method	2 in force	to Mar 2041

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 10,634,558	Air Quality Monitoring System and Enhanced Spectrophotometric Chemical Sensor In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 10,876,890	Air Quality Monitoring System and Enhanced Spectrophotometric Chemical Sensor In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,193,822	Air Quality Monitoring System and Enhanced Spectrophotometric Chemical Sensor In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,346,717	Air Quality Monitoring System and Method In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,467,032	Air Quality Monitoring System and Method In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,604,094	Air Quality Monitoring System and Method In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,768,110	Air Quality Monitoring System and Method In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,788,889	Air Quality Monitoring System and Method In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 11,874,170	Air Quality Monitoring System and Method In force Term ends Nov 13, 2038 · High confidence	In force	Term ends Nov 13, 2038	High confidence
US 10,671,772	Computer-Implemented Impact Analysis of Energy Facilities In force Term ends Feb 13, 2039 · High confidence	In force	Term ends Feb 13, 2039	High confidence

10 of 41 patents shown.

Pro members see all 41.

Pro members: see all 41 patents

Also on record, not counted in the 41: 1 patent in force now held by others · 1 application pending · 2 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.

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

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