Where does Roki Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Roki Co., Ltd. ranks #27,279 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 Roki Co., Ltd. hold?

Roki Co., Ltd. holds 10 US utility patents granted between 2015 and 2020, spanning 12 technology areas.

What is Roki Co., Ltd.'s Innovation Score?

Roki Co., Ltd. has an Innovation Score of 24.1 out of 100 (14th 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 Roki Co., Ltd. focus on?

Roki Co., Ltd.'s top technology area is B01D (Separation) with 5 patents, ranking #948 of 3,536 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

Is Roki Co., Ltd.'s patent grant rate increasing or decreasing?

Roki Co., Ltd.'s recent grant velocity is -89% 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 Roki Co., Ltd.'s patents?

Roki Co., Ltd.'s patents average 6.0 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 Roki Co., 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

Roki Co., Ltd.

USPTO PatentsView assignee record - 10 granted patents across 12 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Roki ranks #27,279 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 12 technology areas.

#27,279
of 49,997 US assignees by volume: 14th percentile
by Innovation Score (24.1/100): 6.0
avg claims per patent: -89%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R27279 · Foreign Corporation #27,279 · 10 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 10 grants
MID-PACK #27,279/49,997
PHOTO-FINISH River Light V
CPC-FOCUS B01D · 12 areas
INNOV-THIN 24.1/100
CLAIMS-SPARSE 6.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -89% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: River Light V, L.P. (±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 Roki’s 24.1 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 8.3 pts (34%) Velocity 0.0 pts (0%) Breadth 12.2 pts (51%) Claim depth 3.6 pts (15%)

Qualcomm Incorporated · highest

85
Roki · this assignee

24
3D Lighting… · lowest

7

What this shows Roki's Innovation Score is 24.1/100 (14th 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 Roki?

Each dot is one of Roki’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). Roki’s own 6.0 claims/patent is at or below the 12.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Roki's grants concentrate

Roki Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 50% of grants classified under B01D (Separation). Peak complete grant year is 2015 (3 grants) versus a trough of 1 in 2018. By volume, Roki sits between River Light V, L.P. and Rothamsted Research Ltd.

River Light V

10
RJ LEE Group

10
Robertet

10
Roccat

10
Roll-n-lock

10
Rooster Products…

10
Ropfin B V

10
Rothamsted Resear…

10
Roki ◀

10

What this shows Roki holds 10 patents at rank #27,242, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Roki

By rank, the assignees closest to #27,242 in granted patent volume.

Leaders in B01D (Separation)

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

Roki's Innovation Score vs. every tracked assignee

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

24 14th percentile higher than 14% 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

Roki Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	30.0%
2016	2	20.0%
2017	3	30.0%
2018	1	10.0%
2020	1	10.0%

Which technologies does Roki Co., Ltd. patent most?

B01D - Separation 5

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 3

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 3

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 3

F01M - Lubricating OF Machines OR Engines IN GENERAL; Lubricating Internal Combustion ENGINES; Crankcase Ventilating 1

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 1

F15D - Fluid Dynamics, i.e. Methods OR Means FOR Influencing THE Flow OF Gases OR Liquids 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 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

Roki Co., Ltd.'s patent record in context - here's where to go next.

Roki Co., Ltd.'s lead technology class is B01D (Separation), 50% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #27,279 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Roki Co., Ltd. against River Light V, L.P., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.1/100 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.