Where does Culligan International Company rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Culligan International Company ranks #22,430 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 Culligan International Company hold?

Culligan International Company holds 12 US utility patents granted between 2017 and 2025, spanning 12 technology areas.

What is Culligan International Company's Innovation Score?

Culligan International Company has an Innovation Score of 35.0 out of 100 (top 50% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Culligan International Company focus on?

Culligan International Company's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 11 patents, ranking #116 of 1,366 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

Is Culligan International Company's patent grant rate increasing or decreasing?

Culligan International Company's recent grant velocity is +800% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Culligan International Company's patents?

Culligan International Company's patents average 14.3 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 Culligan International Company 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

Culligan International Company

USPTO PatentsView assignee record - 12 granted patents across 12 technology areas, recorded in grant years 2017–2025. 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Culligan ranks #22,430 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 12 technology areas.

#22,430
of 49,997 US assignees by volume: Top 50%
by Innovation Score (35.0/100): 14.3
avg claims per patent: +800%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R22430 · US Corporation #22,430 · 12 grants

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

GRANTS-MICRO 12 grants
MID-PACK #22,430/49,997
PHOTO-FINISH Caldera Medical
CPC-FOCUS C02F · 12 areas
INNOV-THIN 35.0/100
CLAIMS-RICH 14.3 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +800% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Caldera Medical, 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.

How Culligan’s 35.0 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 8.9 pts (25%) Velocity 5.3 pts (15%) Breadth 12.2 pts (35%) Claim depth 8.6 pts (25%)

Qualcomm Incorporated · highest

85
Culligan International · this assignee

35
3D Lighting… · lowest

7

What this shows Culligan's Innovation Score is 35.0/100 (top 50% 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 Culligan?

Each dot is one of Culligan’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). Culligan’s own 14.3 claims/patent is ABOVE the 14.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Culligan's grants concentrate

Culligan International Company is a focused PatentsView assignee: 12 CPC subclasses with 91.7% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2020 (4 grants) versus a trough of 1 in 2017. By volume, Culligan sits between Crown Bioscience, Inc. (TAICANG) and CarMax Enterprise Services, LLC.

Culligan's three-year grant acceleration

Culligan International Company shows 4 grants in 2022–2024 against only 5 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.

Crown Bioscience…

12
Crystal Internati…

12
CSI Cells

12
CU Aerospace

12
Caldera Medical

12
California Cooper…

12
Canary Medical Sw…

12
Carmax Enterprise…

12
Culligan Internat… ◀

12

What this shows Culligan holds 12 patents at rank #22,381, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Culligan

By rank, the assignees closest to #22,381 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Culligan's Innovation Score vs. every tracked assignee

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

35 Top 50% higher than 50% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Culligan International Company patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	8.3%
2020	4	33.3%
2021	1	8.3%
2022	1	8.3%
2023	2	16.7%
2024	1	8.3%
2025partial year	2	16.7%

Which technologies does Culligan International Company patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 11

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 6

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

B01D - Separation 2

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 1

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 1

B67D - Dispensing, Delivering OR Transferring Liquids, NOT Otherwise Provided FOR 1

Y02A - Technologies FOR Adaptation TO Climate Change 1

G08B - Signalling OR Calling SYSTEMS; Order TELEGRAPHS; Alarm Systems 1

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 1

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 1

E03C - Domestic Plumbing Installations FOR Fresh Water OR Waste Water ; Sinks 1

Top 12 of 12 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

Culligan International Company's patent record in context - here's where to go next.

Culligan International Company's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 91.7% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #22,430 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Culligan International Company against Crown Bioscience, Inc. (TAICANG), an assignee filing at a similar volume. Compare portfolios
Innovation Score of 35.0/100 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.