Where does Crown Iron Works Company LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Crown Iron Works Company LLC ranks #15,207 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 Crown Iron Works Company LLC hold?

Crown Iron Works Company LLC holds 19 US utility patents granted between 2015 and 2025, spanning 18 technology areas.

What is Crown Iron Works Company LLC's Innovation Score?

Crown Iron Works Company LLC has an Innovation Score of 44.3 out of 100 (top 26% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Crown Iron Works Company LLC focus on?

Crown Iron Works Company LLC's top technology area is B01D (Separation) with 12 patents, ranking #390 of 3,536 assignees active in that subclass. Grants appear in 18 CPC subclasses total.

Is Crown Iron Works Company LLC's patent grant rate increasing or decreasing?

Crown Iron Works Company LLC's recent grant velocity is -36% 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 Crown Iron Works Company LLC's patents?

Crown Iron Works Company LLC's patents average 13.1 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 Crown Iron Works Company LLC 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

Crown Iron Works Company LLC

USPTO PatentsView assignee record - 19 granted patents across 18 technology areas, recorded in grant years 2015–2025. 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Crown ranks #15,207 of 49,997 tracked US assignees by granted-patent volume, with 19 patents across 18 technology areas.

#15,207
of 49,997 US assignees by volume: Top 26%
by Innovation Score (44.3/100): 13.1
avg claims per patent: -36%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15207 · US Corporation #15,207 · 19 grants

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

GRANTS-MICRO 19 grants
MID-PACK #15,207/49,997
PHOTO-FINISH Colt's Manufacturing…
CPC-FOCUS B01D · 18 areas
INNOV-PAR 44.3/100
CLAIMS-RICH 13.1 claims/avg
TYPE-USCORP US Corporation
VEL-DOWN -36% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Colt's Manufacturing IP Holding Company LLC (±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 Crown’s 44.3 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 10.3 pts (23%) Velocity 11.1 pts (25%) Breadth 15.0 pts (34%) Claim depth 7.9 pts (18%)

Qualcomm Incorporated · highest

85
Crown Iron Works · this assignee

44
3D Lighting… · lowest

7

What this shows Crown's Innovation Score is 44.3/100 (top 26% 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 Crown?

Each dot is one of Crown’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). Crown’s own 13.1 claims/patent is at or below the 15.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Crown's grants concentrate

Crown Iron Works Company LLC is a focused PatentsView assignee: 18 CPC subclasses with 63.2% of grants classified under B01D (Separation). Peak complete grant year is 2024 (4 grants) versus a trough of 1 in 2019. By volume, Crown sits between Colt's Manufacturing IP Holding Company LLC and Custom Wheel House, LLC.

Crown's three-year grant acceleration

Crown Iron Works Company LLC shows 5 grants in 2022–2024 against only 3 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.

Colt's Manufactur…

19
Commercial Sewing

19
Compass Plants B V

19
Cpsi Holdings

19
CSA Medical

19
Csidentity

19
Curonix

19
Custom Wheel House

19
Crown Iron Works ◀

19

What this shows Crown holds 19 patents at rank #15,188, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Crown

By rank, the assignees closest to #15,188 in granted patent volume.

Leaders in B01D (Separation)

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

Crown's Innovation Score vs. every tracked assignee

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

44 Top 26% higher than 74% 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 · 2015–2025

Grants by year

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

View data table

Crown Iron Works Company LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	10.5%
2016	2	10.5%
2017	3	15.8%
2018	3	15.8%
2019	1	5.3%
2020	1	5.3%
2021	1	5.3%
2022	1	5.3%
2024	4	21.1%
2025partial year	1	5.3%

Which technologies does Crown Iron Works Company LLC patent most?

B01D - Separation 12

C11B - Producing, e.g. BY Pressing RAW Materials OR BY Extraction From Waste Materials, Refining OR Preserving Fats, Fatty Substances, e.g. Lanolin, Fatty Oils OR WAXES; Essential OILS; Perfumes 8

F26B - Drying Solid Materials OR Objects BY Removing Liquid Therefrom 6

A23N - Machines OR Apparatus FOR Treating Harvested Fruit, Vegetables OR Flower Bulbs IN Bulk, NOT Otherwise Provided FOR; Peeling Vegetables OR Fruit IN BULK; Apparatus FOR Preparing Animal Feeding- Stuffs 3

F16H - Gearing 2

Y10T - Technical Subjects Covered BY Former US Classification 2

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 1

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 1

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 1

C07H - SUGARS; Derivatives THEREOF; NUCLEOSIDES; NUCLEOTIDES; Nucleic Acids 1

A23L - Foods, Foodstuffs OR Non-alcoholic Beverages, NOT Otherwise Provided FOR; Preparation OR Treatment Thereof 1

B03B - Separating Solid Materials Using Liquids OR Using Pneumatic Tables OR Jigs 1

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 1

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 1

F16C - SHAFTS; Flexible SHAFTS; Elements OR Crankshaft MECHANISMS; Rotary Bodies Other Than Gearing ELEMENTS; Bearings 1

Top 15 of 18 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

Crown Iron Works Company LLC's patent record in context - here's where to go next.

Crown Iron Works Company LLC's lead technology class is B01D (Separation), 63.2% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #15,207 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Crown Iron Works Company LLC against Colt's Manufacturing IP Holding Company LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.3/100 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.