Where does Burrell Mining Products, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Burrell Mining Products, Inc. ranks #39,270 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 Burrell Mining Products, Inc. hold?

Burrell Mining Products, Inc. holds 6 US utility patents granted between 2016 and 2021, spanning 3 technology areas.

What is Burrell Mining Products, Inc.'s Innovation Score?

Burrell Mining Products, Inc. has an Innovation Score of 27.9 out of 100 (25th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Burrell Mining Products, Inc. focus on?

Burrell Mining Products, Inc.'s top technology area is E21D (SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers) with 6 patents, ranking #21 of 112 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

Is Burrell Mining Products, Inc.'s patent grant rate increasing or decreasing?

Burrell Mining Products, Inc.'s recent grant velocity is -50% 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 Burrell Mining Products, Inc.'s patents?

Burrell Mining Products, Inc.'s patents average 25.2 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 Burrell Mining Products, 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

Burrell Mining Products, Inc.

USPTO PatentsView assignee record - 6 granted patents across 3 technology areas, recorded in grant years 2016–2021. 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: E21D (SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Burrell ranks #39,270 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 3 technology areas.

#39,270
of 49,997 US assignees by volume: 25th percentile
by Innovation Score (27.9/100): 25.2
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R39270 · US Corporation #39,270 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-DENSE · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #39,270/49,997
PHOTO-FINISH Buddi
CPC-NARROW E21D · 3 areas
INNOV-THIN 27.9/100
CLAIMS-DENSE 25.2 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Buddi Limited (±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 Burrell’s 27.9 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 6.7 pts (24%) Velocity 0.0 pts (0%) Breadth 6.1 pts (22%) Claim depth 15.0 pts (54%)

Qualcomm Incorporated · highest

85
Burrell Mining… · this assignee

28
3D Lighting… · lowest

7

What this shows Burrell's Innovation Score is 27.9/100 (25th 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 Burrell?

Each dot is one of Burrell’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). Burrell’s own 25.2 claims/patent is ABOVE the 18.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Burrell's grants concentrate

Burrell Mining Products, Inc. is a focused PatentsView assignee: 3 CPC subclasses with 100% of grants classified under E21D (SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers). Peak complete grant year is 2017 (2 grants) versus a trough of 1 in 2016. By volume, Burrell sits between Buddi Limited and BÜRKERT Contromatic Corp..

Buddi

6
Buildz

6
Bulk Chemicals

6
Bunting Magnetics

6
Butech Bliss

6
Butler's Brand

6
Bystronic Lenhardt

6
BÜRkert Contromat…

6
Burrell Mining Pr… ◀

6

What this shows Burrell holds 6 patents at rank #39,275, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Burrell

By rank, the assignees closest to #39,275 in granted patent volume.

Leaders in E21D (Shafts)

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

Burrell's Innovation Score vs. every tracked assignee

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

28 25th percentile higher than 25% 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 · 2016–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Burrell Mining Products, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	16.7%
2017	2	33.3%
2018	1	16.7%
2020	1	16.7%
2021	1	16.7%

Which technologies does Burrell Mining Products, Inc. patent most?

E21D - SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers 6

E21F - Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels 2

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 1

Top 3 of 3 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

Burrell Mining Products, Inc.'s patent record in context - here's where to go next.

Burrell Mining Products, Inc.'s lead technology class is E21D (SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers), 100% of its portfolio - see every assignee active in that class. Explore E21D
Ranked #39,270 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Burrell Mining Products, Inc. against Buddi Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.9/100 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.