Where does Seikagaku Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Seikagaku Corporation ranks #5,319 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 Seikagaku Corporation hold?

Seikagaku Corporation holds 65 US utility patents granted between 2015 and 2025, spanning 23 technology areas.

What is Seikagaku Corporation's Innovation Score?

Seikagaku Corporation has an Innovation Score of 40.9 out of 100 (top 34% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Seikagaku Corporation's patent grant rate increasing or decreasing?

Seikagaku Corporation's recent grant velocity is -16% 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 Seikagaku Corporation's patents?

Seikagaku Corporation'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 Seikagaku Corporation 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

Seikagaku Corporation

Q: What technology areas does Seikagaku Corporation focus on?

Seikagaku Corporation's top technology area is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes) with 40 patents. Grants appear in 23 CPC subclasses total.

USPTO PatentsView assignee record - 65 granted patents across 23 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: A61K (Preparations FOR Medical, Dental OR Toiletry Purposes).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Seikagaku ranks #5,319 of 49,997 tracked US assignees by granted-patent volume, with 65 patents across 23 technology areas.

#5,319
of 49,997 US assignees by volume: Top 34%
by Innovation Score (40.9/100): 8.8
avg claims per patent: -16%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5319 · Foreign Corporation #5,319 · 65 grants

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

GRANTS-SMALL 65 grants
UPPER-Q #5,319/49,997
PHOTO-FINISH Relign
CPC-FOCUS A61K · 23 areas
INNOV-PAR 40.9/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -16% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Relign Corporation (±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.

Qualcomm Incorporated · highest

85
NextLabs · near

41
OCÉ- B V · near

41
Seikagaku · this assignee

41
Wahl Clipper · near

41
Techtronic Industries · near

41
3D Lighting… · lowest

7

What this shows Seikagaku's Innovation Score is 40.9/100 (top 34% 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.

Where Seikagaku's grants concentrate

Seikagaku Corporation is a focused PatentsView assignee: 23 CPC subclasses with 61.5% of grants classified under A61K (Preparations FOR Medical, Dental OR Toiletry Purposes). Peak complete grant year is 2015 (10 grants) versus a trough of 3 in 2016. By volume, Seikagaku sits between Relign Corporation and Shenzhen Grandsun Electronic Co., Ltd..

Seikagaku's three-year grant acceleration

From 2019–2021 to 2022–2024, Seikagaku Corporation moved from 21 to 13 grants (0.62x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Relign

65
Reno

65
Saes Getters S P A

65
SDS Asia BVI #174…

65
SPR Therapeutics

65
Schneider Toshiba…

65
Seven Bridges Gen…

65
Shenzhen Grandsun

65
Seikagaku ◀

65

What this shows Seikagaku holds 65 patents at rank #5,317, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Seikagaku

By rank, the assignees closest to #5,317 in granted patent volume.

Leaders in A61K (Preparations FOR Medical)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Seikagaku, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (41 here).

Wahl Clipper Corporation 41 Techtronic Industries Co. Ltd. 41 NextLabs, Inc. 41 OCÉ-TECHNOLOGIES B.V. 41

Similar claim depth

Nearest assignees by average claims per patent (8.8 here).

Kyocera Document Solutions Inc. 8.8 avg TaeguTec Ltd. 8.9 avg Rohm and Haas Electronic Materials CMP Holdings, Inc. 8.8 avg Godo Kaisha IP Bridge 1 8.9 avg

Seikagaku's Innovation Score vs. every tracked assignee

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

41 Top 34% higher than 66% 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

Seikagaku Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	10	15.4%
2016	3	4.6%
2017	7	10.8%
2018	5	7.7%
2019	7	10.8%
2020	4	6.2%
2021	10	15.4%
2022	5	7.7%
2023	4	6.2%
2024	4	6.2%
2025partial year	6	9.2%

Which technologies does Seikagaku Corporation patent most?

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 40

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 40

C08B - POLYSACCHARIDES; Derivatives Thereof 16

C12Y - Enzymes 15

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 11

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 10

C07K - Peptides 7

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 4

C07C - Acyclic OR Carbocyclic Compounds 4

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 4

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 3

C08L - Compositions OF Macromolecular Compounds 3

C07D - Heterocyclic Compounds 3

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

A61M - Devices FOR Introducing Media Into, OR Onto, THE Body ; Devices FOR Transducing Body Media OR FOR Taking Media From THE Body ; Devices FOR Producing OR Ending Sleep OR Stupor 2

Top 15 of 23 technology areas

Where it ranks

Overall rank by patents

#5,319

of 49,997 tracked assignees

Innovation Score

40.9 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Seikagaku Corporation's patent record in context - here's where to go next.

Seikagaku Corporation's lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 61.5% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #5,319 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Seikagaku Corporation against Relign Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.9/100 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.