Where does Clarke Industrial Engineering Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Clarke Industrial Engineering Inc. ranks #45,704 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 Clarke Industrial Engineering Inc. hold?

Clarke Industrial Engineering Inc. holds 5 US utility patents granted between 2015 and 2020, spanning 2 technology areas.

What is Clarke Industrial Engineering Inc.'s Innovation Score?

Clarke Industrial Engineering Inc. has an Innovation Score of 21.3 out of 100 (8th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Clarke Industrial Engineering Inc.'s patent grant rate increasing or decreasing?

Clarke Industrial Engineering Inc.'s recent grant velocity is -75% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Clarke Industrial Engineering Inc.'s patents?

Clarke Industrial Engineering Inc.'s patents average 16.8 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 Clarke Industrial Engineering 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

Clarke Industrial Engineering Inc.

Q: What technology areas does Clarke Industrial Engineering Inc. focus on?

Clarke Industrial Engineering Inc.'s top technology area is F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating) with 4 patents. Grants appear in 2 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 2 technology areas, recorded in grant years 2015–2020. 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: F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Clarke ranks #45,704 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 2 technology areas.

#45,704
of 49,997 US assignees by volume: 8th percentile
by Innovation Score (21.3/100): 16.8
avg claims per patent: -75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R45704 · US Corporation #45,704 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #45,704/49,997
PHOTO-FINISH Citizen Watch of…
CPC-NARROW F16K · 2 areas
INNOV-THIN 21.3/100
CLAIMS-RICH 16.8 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Citizen Watch Company of America, Inc. (±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.

Qualcomm Incorporated · highest

85
Clarke Industrial… · this assignee

21
3D Lighting… · lowest

7

What this shows Clarke's Innovation Score is 21.3/100 (8th 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.

Where Clarke's grants concentrate

Clarke Industrial Engineering Inc. is a focused PatentsView assignee: 2 CPC subclasses with 80% of grants classified under F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating). Peak complete grant year is 2017 (2 grants) versus a trough of 1 in 2015. By volume, Clarke sits between Citizen Watch Company of America, Inc. and Cleanvolt Energy, Inc..

Citizen Watch of…

5
Citrox Biosciences

5
Civolution B V

5
Clariant

5
Clean Air Group

5
Clean Energy Fuels

5
Cleanng

5
Cleanvolt Energy

5
Clarke Industrial… ◀

5

What this shows Clarke holds 5 patents at rank #45,859, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Clarke

By rank, the assignees closest to #45,859 in granted patent volume.

Leaders in F16K (Valves)

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

Clarke's Innovation Score vs. every tracked assignee

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

21 8th percentile higher than 8% 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 · 2015–2020

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Clarke Industrial Engineering Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	20.0%
2017	2	40.0%
2018	1	20.0%
2020	1	20.0%

Which technologies does Clarke Industrial Engineering Inc. patent most?

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 4

F16J - Pistons ; CYLINDERS; Sealings 1

Top 2 of 2 technology areas

Where it ranks

Overall rank by patents

#45,704

of 49,997 tracked assignees

Innovation Score

21.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Clarke Industrial Engineering Inc.'s patent record in context - here's where to go next.

Clarke Industrial Engineering Inc.'s lead technology class is F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating), 80% of its portfolio - see every assignee active in that class. Explore F16K
Ranked #45,704 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Clarke Industrial Engineering Inc. against Citizen Watch Company of America, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 21.3/100 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.