Where does Shikoku Chemicals Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Shikoku Chemicals Corporation ranks #14,938 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 Shikoku Chemicals Corporation hold?

Shikoku Chemicals Corporation holds 20 US utility patents granted between 2015 and 2024, spanning 26 technology areas.

What is Shikoku Chemicals Corporation's Innovation Score?

Shikoku Chemicals Corporation has an Innovation Score of 44.0 out of 100 (top 27% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Shikoku Chemicals Corporation's patent grant rate increasing or decreasing?

Shikoku Chemicals Corporation's recent grant velocity is +50% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Shikoku Chemicals Corporation's patents?

Shikoku Chemicals Corporation's patents average 14.7 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 Shikoku Chemicals 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

Shikoku Chemicals Corporation

Q: What technology areas does Shikoku Chemicals Corporation focus on?

Shikoku Chemicals Corporation's top technology area is H05K (Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components) with 9 patents, ranking #652 of 3,545 assignees active in that subclass. Grants appear in 26 CPC subclasses total.

USPTO PatentsView assignee record - 20 granted patents across 26 technology areas, recorded in grant years 2015–2024. 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: H05K (Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Shikoku ranks #14,938 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 26 technology areas.

#14,938
of 49,997 US assignees by volume: Top 27%
by Innovation Score (44.0/100): 14.7
avg claims per patent: +50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14938 · Foreign Corporation #14,938 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 20 grants
MID-PACK #14,938/49,997
PHOTO-FINISH Shenzhen Guohua…
CPC-FOCUS H05K · 26 areas
INNOV-PAR 44.0/100
CLAIMS-RICH 14.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Shenzhen Guohua Optoelectronics Co., Ltd. (±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 Shikoku’s 44.0 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 10.5 pts (24%) Velocity 6.7 pts (15%) Breadth 18.0 pts (41%) Claim depth 8.8 pts (20%)

Qualcomm Incorporated · highest

85
Shikoku Chemicals · this assignee

44
3D Lighting… · lowest

7

What this shows Shikoku's Innovation Score is 44.0/100 (top 27% 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 Shikoku?

Each dot is one of Shikoku’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). Shikoku’s own 14.7 claims/patent is ABOVE the 10.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Shikoku's grants concentrate

Shikoku Chemicals Corporation is a focused PatentsView assignee: 26 CPC subclasses with 45% of grants classified under H05K (Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components). Peak complete grant year is 2021 (4 grants) versus a trough of 1 in 2015. By volume, Shikoku sits between Shenzhen Guohua Optoelectronics Co., Ltd. and SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR.

Shikoku's three-year grant acceleration

Shikoku Chemicals Corporation shows 7 grants in 2022–2024 against only 7 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.

Shenzhen Guohua O…

20
Shenzhen Hongwang…

20
Shenzhen Qianhai…

20
Shibaura Institut…

20
Shining 3D Tech

20
Silicon Touch Tec…

20
Simonswerk

20
SOCIÉTÉ FRANÇAISE…

20
Shikoku Chemicals ◀

20

What this shows Shikoku holds 20 patents at rank #14,927, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Shikoku

By rank, the assignees closest to #14,927 in granted patent volume.

Leaders in H05K (Printed Circuits)

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

Shikoku's Innovation Score vs. every tracked assignee

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

44 Top 27% higher than 73% 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 · 2015–2024

Grants by year

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

View data table

Shikoku Chemicals Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	5.0%
2016	1	5.0%
2017	2	10.0%
2018	2	10.0%
2019	2	10.0%
2020	1	5.0%
2021	4	20.0%
2022	2	10.0%
2023	4	20.0%
2024	1	5.0%

Which technologies does Shikoku Chemicals Corporation patent most?

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 9

C07D - Heterocyclic Compounds 9

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 8

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 7

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 6

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 6

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 6

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 4

C08L - Compositions OF Macromolecular Compounds 4

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 3

C23F - Non-mechanical Removal OF Metallic Material From Surface ; Inhibiting Corrosion OF Metallic Material OR Incrustation IN GENERAL; Multi-step Processes FOR Surface Treatment OF Metallic Material Involving AT Least ONE Process Provided FOR IN Class C23 AND AT Least ONE Process Covered BY Subclass C21d 3

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 2

C07C - Acyclic OR Carbocyclic Compounds 2

E04B - General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings 1

E04H - Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General 1

Top 15 of 26 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

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

Shikoku Chemicals Corporation's lead technology class is H05K (Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components), 45% of its portfolio - see every assignee active in that class. Explore H05K
Ranked #14,938 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Shikoku Chemicals Corporation against Shenzhen Guohua Optoelectronics Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.0/100 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.