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

According to USPTO PatentsView (2015–2025 granted utility patents), Riken Keiki Co., Ltd. ranks #42,681 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 Riken Keiki Co., Ltd. hold?

Riken Keiki Co., Ltd. holds 6 US utility patents granted between 2018 and 2022, spanning 2 technology areas.

What is Riken Keiki Co., Ltd.'s Innovation Score?

Riken Keiki Co., Ltd. has an Innovation Score of 18.4 out of 100 (5th 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 Riken Keiki Co., Ltd. focus on?

Riken Keiki Co., Ltd.'s top technology area is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties) with 6 patents, ranking #2,307 of 7,863 assignees active in that subclass. Grants appear in 2 CPC subclasses total.

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

Riken Keiki Co., Ltd.'s recent grant velocity is +400% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Riken Keiki Co., Ltd.'s patents?

Riken Keiki Co., Ltd.'s patents average 8.3 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 Riken Keiki 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

Riken Keiki Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 2 technology areas, recorded in grant years 2018–2022. 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: G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Riken ranks #42,681 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 2 technology areas.

#42,681
of 49,997 US assignees by volume: 5th percentile
by Innovation Score (18.4/100): 8.3
avg claims per patent: +400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R42681 · Foreign Corporation #42,681 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #42,681/49,997
PHOTO-FINISH Riccobene Designs
CPC-NARROW G01N · 2 areas
INNOV-LOW 18.4/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Riccobene Designs 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 Riken’s 18.4 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 (36%) Velocity 1.7 pts (9%) Breadth 5.0 pts (27%) Claim depth 5.0 pts (27%)

Qualcomm Incorporated · highest

85
Riken Keiki · this assignee

18
3D Lighting… · lowest

7

What this shows Riken's Innovation Score is 18.4/100 (5th 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 Riken?

Each dot is one of Riken’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). Riken’s own 8.3 claims/patent is at or below the 14.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Riken's grants concentrate

Riken Keiki Co., Ltd. is a focused PatentsView assignee: 2 CPC subclasses with 100% of grants classified under G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties). Peak complete grant year is 2020 (3 grants) versus a trough of 1 in 2018. By volume, Riken sits between Riccobene Designs LLC and Riso Technologies Corporation.

Riken's three-year grant acceleration

Riken Keiki Co., Ltd. shows 1 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.

Riccobene Designs

6
Ricoh Industrial…

6
Riffyn

6
Rigol

6
Rime Downhole

6
RIN Institute

6
Ripd Research AND…

6
Riso

6
Riken Keiki ◀

6

What this shows Riken holds 6 patents at rank #42,583, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Riken

By rank, the assignees closest to #42,583 in granted patent volume.

Leaders in G01N (Investigating OR Analysing Materials BY Determining Their…)

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

Riken's Innovation Score vs. every tracked assignee

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

18 5th percentile higher than 5% 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 · 2018–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Riken Keiki Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	16.7%
2020	3	50.0%
2021	1	16.7%
2022	1	16.7%

Which technologies does Riken Keiki Co., Ltd. patent most?

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 6

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 1

Top 2 of 2 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

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

Riken Keiki Co., Ltd.'s lead technology class is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties), 100% of its portfolio - see every assignee active in that class. Explore G01N
Ranked #42,681 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Riken Keiki Co., Ltd. against Riccobene Designs LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 18.4/100 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.