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

According to USPTO PatentsView (2015–2025 granted utility patents), Tokyo Roki Co., Ltd. ranks #16,447 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 Tokyo Roki Co., Ltd. hold?

Tokyo Roki Co., Ltd. holds 18 US utility patents granted between 2015 and 2025, spanning 13 technology areas.

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

Tokyo Roki Co., Ltd. has an Innovation Score of 28.3 out of 100 (27th 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 Tokyo Roki Co., Ltd. focus on?

Tokyo Roki Co., Ltd.'s top technology area is B01D (Separation) with 16 patents, ranking #303 of 3,536 assignees active in that subclass. Grants appear in 13 CPC subclasses total.

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

Tokyo Roki Co., Ltd.'s recent grant velocity is -45% 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 Tokyo Roki Co., Ltd.'s patents?

Tokyo Roki Co., Ltd.'s patents average 6.8 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 Tokyo 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

Tokyo Roki Co., Ltd.

USPTO PatentsView assignee record - 18 granted patents across 13 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Tokyo ranks #16,447 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 13 technology areas.

#16,447
of 49,997 US assignees by volume: 27th percentile
by Innovation Score (28.3/100): 6.8
avg claims per patent: -45%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R16447 · Foreign Corporation #16,447 · 18 grants

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

GRANTS-MICRO 18 grants
MID-PACK #16,447/49,997
PHOTO-FINISH Teko Telecom S r l
CPC-FOCUS B01D · 13 areas
INNOV-THIN 28.3/100
CLAIMS-SPARSE 6.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -45% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Teko Telecom S.r.l. (±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 Tokyo’s 28.3 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 10.2 pts (36%) Velocity 1.3 pts (5%) Breadth 12.7 pts (45%) Claim depth 4.1 pts (14%)

Qualcomm Incorporated · highest

85
Tokyo Roki · this assignee

28
3D Lighting… · lowest

7

What this shows Tokyo's Innovation Score is 28.3/100 (27th 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 Tokyo?

Each dot is one of Tokyo’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). Tokyo’s own 6.8 claims/patent is at or below the 12.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Tokyo's grants concentrate

Tokyo Roki Co., Ltd. is a focused PatentsView assignee: 13 CPC subclasses with 88.9% of grants classified under B01D (Separation). Peak complete grant year is 2019 (6 grants) versus a trough of 1 in 2015. By volume, Tokyo sits between Teko Telecom S.r.l. and Toyama Chemical Co., Ltd..

Tokyo's three-year grant acceleration

Tokyo Roki Co., Ltd. shows 2 grants in 2022–2024 against only 10 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.

Teko Telecom S r l

18
TEL Manufacturing…

18
Telekom Malaysia…

18
Tokuyama Sekisui

18
Totes Isotoner

18
Touchsensor

18
TOX Pressotechnik…

18
Toyama Chemical

18
Tokyo Roki ◀

18

What this shows Tokyo holds 18 patents at rank #16,421, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tokyo

By rank, the assignees closest to #16,421 in granted patent volume.

Leaders in B01D (Separation)

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

Tokyo's Innovation Score vs. every tracked assignee

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

28 27th percentile higher than 27% 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

Tokyo Roki Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	5.6%
2016	2	11.1%
2017	1	5.6%
2018	1	5.6%
2019	6	33.3%
2020	2	11.1%
2021	2	11.1%
2022	1	5.6%
2024	1	5.6%
2025partial year	1	5.6%

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

B01D - Separation 16

F01M - Lubricating OF Machines OR Engines IN GENERAL; Lubricating Internal Combustion ENGINES; Crankcase Ventilating 10

B04B - Centrifuges 8

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 4

Y02T - Climate Change Mitigation Technologies Related TO Transportation 4

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

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 3

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

Y02A - Technologies FOR Adaptation TO Climate Change 1

H05H - Plasma Technique ; Production OF Accelerated Electrically-charged Particles OR OF NEUTRONS; Production OR Acceleration OF Neutral Molecular OR Atomic Beams 1

B21C - Manufacture OF Metal Sheets, Wire, Rods, Tubes, Profiles OR Like Semi-manufactured Products Otherwise Than BY ROLLING; Auxiliary Operations Used IN Connection With Metal-working Without Essentially Removing Material 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

Top 13 of 13 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

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

Tokyo Roki Co., Ltd.'s lead technology class is B01D (Separation), 88.9% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #16,447 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tokyo Roki Co., Ltd. against Teko Telecom S.r.l., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.3/100 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.