Where does Roburn Company Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Roburn Company Ltd. ranks #33,099 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 Roburn Company Ltd. hold?

Roburn Company Ltd. holds 8 US utility patents granted between 2020 and 2024, spanning 5 technology areas.

What is Roburn Company Ltd.'s Innovation Score?

Roburn Company Ltd. has an Innovation Score of 26.9 out of 100 (22nd 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 Roburn Company Ltd. focus on?

Roburn Company Ltd.'s top technology area is F23D (Burners) with 4 patents, ranking #63 of 247 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

Is Roburn Company Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Roburn Company Ltd..

What does claim depth mean for Roburn Company Ltd.'s patents?

Roburn Company Ltd.'s patents average 7.9 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 Roburn Company Ltd. 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 Foreign Corporation

Roburn Company Ltd.

USPTO PatentsView assignee record - 8 granted patents across 5 technology areas, recorded in grant years 2020–2024. 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: F23D (Burners).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Roburn ranks #33,099 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 5 technology areas.

#33,099
of 49,997 US assignees by volume: 22nd percentile
by Innovation Score (26.9/100): 7.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R33099 · Foreign Corporation #33,099 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 8 grants
MID-PACK #33,099/49,997
PHOTO-FINISH Rlmb Group
CPC-NARROW F23D · 5 areas
INNOV-THIN 26.9/100
CLAIMS-SPARSE 7.9 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2024 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Rlmb Group, 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 Roburn’s 26.9 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 7.6 pts (28%) Velocity 6.7 pts (25%) Breadth 7.9 pts (29%) Claim depth 4.7 pts (17%)

Qualcomm Incorporated · highest

85
Roburn · this assignee

27
3D Lighting… · lowest

7

What this shows Roburn's Innovation Score is 26.9/100 (22nd 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 Roburn?

Each dot is one of Roburn’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). Roburn’s own 7.9 claims/patent is at or below the 9.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Roburn's grants concentrate

Roburn Company Ltd. is a focused PatentsView assignee: 5 CPC subclasses with 50% of grants classified under F23D (Burners). Peak complete grant year is 2022 (3 grants) versus a trough of 1 in 2024. By volume, Roburn sits between Rlmb Group, LLC and Romaine Empire, Inc..

Roburn's three-year grant acceleration

Roburn Company Ltd. shows 4 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.

Rlmb Group

8
RMB Importing

8
Robit OYJ

8
Robo3

8
ROC S r l

8
Roen Surgical

8
Rokit Healthcare

8
Romaine Empire

8
Roburn ◀

8

What this shows Roburn holds 8 patents at rank #33,027, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Roburn

By rank, the assignees closest to #33,027 in granted patent volume.

Leaders in F23D (Burners)

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

Roburn's Innovation Score vs. every tracked assignee

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

27 22nd percentile higher than 22% 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 · 2020–2024

Grants by year

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

View data table

Roburn Company Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	2	25.0%
2021	2	25.0%
2022	3	37.5%
2024	1	12.5%

Which technologies does Roburn Company Ltd. patent most?

F23D - Burners 4

F23Q - Ignition ; Extinguishing-devices 1

F23C - Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR 1

A45D - Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring 1

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 1

Top 5 of 5 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

Roburn Company Ltd.'s patent record in context - here's where to go next.

Roburn Company Ltd.'s lead technology class is F23D (Burners), 50% of its portfolio - see every assignee active in that class. Explore F23D
Ranked #33,099 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Roburn Company Ltd. against Rlmb Group, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 26.9/100 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.