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

According to USPTO PatentsView (2015–2025 granted utility patents), Denka Seiken Co., Ltd. ranks #12,408 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 Denka Seiken Co., Ltd. hold?

Denka Seiken Co., Ltd. holds 24 US utility patents granted between 2015 and 2021, spanning 10 technology areas.

What is Denka Seiken Co., Ltd.'s Innovation Score?

Denka Seiken Co., Ltd. has an Innovation Score of 27.6 out of 100 (24th 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 Denka Seiken Co., Ltd. focus on?

Denka Seiken Co., Ltd.'s top technology area is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties) with 21 patents, ranking #729 of 7,863 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

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

Denka Seiken Co., Ltd.'s recent grant velocity is -91% 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 Denka Seiken Co., Ltd.'s patents?

Denka Seiken Co., Ltd.'s patents average 8.8 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 Denka Seiken 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

Denka Seiken Co., Ltd.

USPTO PatentsView assignee record - 24 granted patents across 10 technology areas, recorded in grant years 2015–2021. 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: 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, Denka ranks #12,408 of 49,997 tracked US assignees by granted-patent volume, with 24 patents across 10 technology areas.

#12,408
of 49,997 US assignees by volume: 24th percentile
by Innovation Score (27.6/100): 8.8
avg claims per patent: -91%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R12408 · Foreign Corporation #12,408 · 24 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 24 grants
UPPER-Q #12,408/49,997
PHOTO-FINISH Cyral
CPC-FOCUS G01N · 10 areas
INNOV-THIN 27.6/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -91% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Cyral Inc. (±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 Denka’s 27.6 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 11.1 pts (40%) Velocity 0.0 pts (0%) Breadth 11.2 pts (41%) Claim depth 5.3 pts (19%)

Qualcomm Incorporated · highest

85
Denka Seiken · this assignee

28
3D Lighting… · lowest

7

What this shows Denka's Innovation Score is 27.6/100 (24th 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 Denka?

Each dot is one of Denka’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). Denka’s own 8.8 claims/patent is at or below the 11.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Denka's grants concentrate

Denka Seiken Co., Ltd. is a focused PatentsView assignee: 10 CPC subclasses with 87.5% of grants classified under G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties). Peak complete grant year is 2018 (6 grants) versus a trough of 1 in 2020. By volume, Denka sits between Cyral Inc. and DNA Genotek Inc..

Cyral

24
D-link

24
Deka Biosciences

24
Delfortgroup

24
Dentsu

24
Digital Surgery

24
Digitalinsights

24
DNA Genotek

24
Denka Seiken ◀

24

What this shows Denka holds 24 patents at rank #12,404, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Denka

By rank, the assignees closest to #12,404 in granted patent volume.

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

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

Denka's Innovation Score vs. every tracked assignee

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

28 24th percentile higher than 24% 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 · 2015–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Denka Seiken Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	20.8%
2016	2	8.3%
2017	3	12.5%
2018	6	25.0%
2019	6	25.0%
2020	1	4.2%
2021	1	4.2%

Which technologies does Denka Seiken Co., Ltd. patent most?

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 21

C12Q - Measuring OR Testing Processes Involving Enzymes, Nucleic Acids OR Microorganisms ; Compositions OR Test Papers THEREFOR; Processes OF Preparing Such COMPOSITIONS; Condition-responsive Control IN Microbiological OR Enzymological Processes 9

C07K - Peptides 4

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 1

B01L - Chemical OR Physical Laboratory Apparatus FOR General USE 1

B02C - Crushing, Pulverising, OR Disintegrating IN GENERAL; Milling Grain 1

C12M - Apparatus FOR Enzymology OR MICROBIOLOGY; Apparatus FOR Culturing Microorganisms FOR Producing Biomass, FOR Growing Cells OR FOR Obtaining Fermentation OR Metabolic Products, i.e. Bioreactors OR Fermenters 1

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 1

Y02A - Technologies FOR Adaptation TO Climate Change 1

B01D - Separation 1

Top 10 of 10 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

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

Denka Seiken Co., Ltd.'s lead technology class is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties), 87.5% of its portfolio - see every assignee active in that class. Explore G01N
Ranked #12,408 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Denka Seiken Co., Ltd. against Cyral Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.6/100 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.