Where does Clean Air-Engineering—Maritime, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Clean Air-Engineering—Maritime, Inc. ranks #34,768 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Clean Air-Engineering—Maritime, Inc. hold?

Clean Air-Engineering—Maritime, Inc. holds 7 US utility patents granted between 2019 and 2025, spanning 6 technology areas.

What is Clean Air-Engineering—Maritime, Inc.'s Innovation Score?

Clean Air-Engineering—Maritime, Inc. has an Innovation Score of 26.3 out of 100 (20th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Clean Air-Engineering—Maritime, Inc.'s patent grant rate increasing or decreasing?

Clean Air-Engineering—Maritime, Inc.'s recent grant velocity is +100% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Clean Air-Engineering—Maritime, Inc.'s patents?

Clean Air-Engineering—Maritime, Inc.'s patents average 11.9 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Clean Air-Engineering—Maritime, Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView US Corporation

Clean Air-Engineering—Maritime, Inc.

Q: What technology areas does Clean Air-Engineering—Maritime, Inc. focus on?

Clean Air-Engineering—Maritime, Inc.'s top technology area is F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines) with 7 patents, ranking #125 of 487 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 7 granted patents across 6 technology areas, recorded in grant years 2019–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Clean ranks #34,768 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 6 technology areas.

#34,768
of 49,997 US assignees by volume: 20th percentile
by Innovation Score (26.3/100): 11.9
avg claims per patent: +100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34768 · US Corporation #34,768 · 7 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 7 grants
MID-PACK #34,768/49,997
PHOTO-FINISH City Universsity of…
CPC-NARROW F01N · 6 areas
INNOV-THIN 26.3/100
CLAIMS-PAR 11.9 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: City, Universsity of London (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Clean’s 26.3 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 7.2 pts (27%) Velocity 3.3 pts (13%) Breadth 8.7 pts (33%) Claim depth 7.1 pts (27%)

Qualcomm Incorporated · highest

85
Clean Air-Engineerin… · this assignee

26
3D Lighting… · lowest

7

What this shows Clean's Innovation Score is 26.3/100 (20th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Clean?

Each dot is one of Clean’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Clean’s own 11.9 claims/patent is at or below the 17.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Clean vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Clean's grants concentrate

Clean Air-Engineering—Maritime, Inc. is a focused PatentsView assignee: 6 CPC subclasses with 100% of grants classified under F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines). Peak complete grant year is 2019 (2 grants) versus a trough of 1 in 2020. By volume, Clean sits between City, Universsity of London and Clear Inc..

Clean's three-year grant acceleration

Clean Air-Engineering—Maritime, Inc. shows 2 grants in 2022–2024 against only 4 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

City Universsity…

7
Clantech

7
Clarity Pharmaceu…

7
Clarus Therapeuti…

7
Clean Diesel (Cdt…

7
Clean Train Propu…

7
Clean-shot Archery

7
Clear

7
Clean Air-enginee… ◀

7

What this shows Clean holds 7 patents at rank #34,833, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Clean

By rank, the assignees closest to #34,833 in granted patent volume.

Leaders in F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR E…)

Other assignees with the most granted patents in Clean's primary technology class.

Clean's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

26 20th percentile higher than 20% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2019–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2019–2019 baseline. Full figures in the table below.

View data table

Clean Air-Engineering—Maritime, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	2	28.6%
2020	1	14.3%
2021	1	14.3%
2022	1	14.3%
2023	1	14.3%
2025partial year	1	14.3%

Which technologies does Clean Air-Engineering—Maritime, Inc. patent most?

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 7

Y02T - Climate Change Mitigation Technologies Related TO Transportation 7

B01D - Separation 5

C12M - Apparatus FOR Enzymology OR MICROBIOLOGY; Apparatus FOR Culturing Microorganisms FOR Producing Biomass, FOR Growing Cells OR FOR Obtaining Fermentation OR Metabolic Products, i.e. Bioreactors OR Fermenters 3

B63H - Marine Propulsion OR Steering 3

Y02A - Technologies FOR Adaptation TO Climate Change 2

Top 6 of 6 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Clean Air-Engineering—Maritime, Inc.'s patent record in context - here's where to go next.

Clean Air-Engineering—Maritime, Inc.'s lead technology class is F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines), 100% of its portfolio - see every assignee active in that class. Explore F01N
Ranked #34,768 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Clean Air-Engineering—Maritime, Inc. against City, Universsity of London, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 26.3/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent , US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.