Where does Coorstek KK rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Coorstek KK ranks #10,290 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 Coorstek KK hold?

Coorstek KK holds 30 US utility patents granted between 2016 and 2024, spanning 23 technology areas.

What is Coorstek KK's Innovation Score?

Coorstek KK has an Innovation Score of 34.9 out of 100 (49th 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 Coorstek KK focus on?

Coorstek KK's top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 12 patents, ranking #838 of 3,373 assignees active in that subclass. Grants appear in 23 CPC subclasses total.

Is Coorstek KK's patent grant rate increasing or decreasing?

Coorstek KK's recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Coorstek KK's patents?

Coorstek KK's patents average 5.1 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 Coorstek KK 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

Coorstek KK

USPTO PatentsView assignee record - 30 granted patents across 23 technology areas, recorded in grant years 2016–2024. 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: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Coorstek ranks #10,290 of 49,997 tracked US assignees by granted-patent volume, with 30 patents across 23 technology areas.

#10,290
of 49,997 US assignees by volume: 49th percentile
by Innovation Score (34.9/100): 5.1
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R10290 · Foreign Corporation #10,290 · 30 grants

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

GRANTS-SMALL 30 grants
UPPER-Q #10,290/49,997
PHOTO-FINISH Caisson Interventional
CPC-FOCUS H01L · 23 areas
INNOV-THIN 34.9/100
CLAIMS-SPARSE 5.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Caisson Interventional 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 Coorstek’s 34.9 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 11.9 pts (34%) Velocity 3.1 pts (9%) Breadth 17.0 pts (49%) Claim depth 3.0 pts (9%)

Qualcomm Incorporated · highest

85
Active Motif · near

35
Beam Engineering… · near

35
Coorstek KK · this assignee

35
Gyrodata Incorporated · near

35
Softbank Robotics… · near

35
3D Lighting… · lowest

7

What this shows Coorstek's Innovation Score is 34.9/100 (49th 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 Coorstek?

Each dot is one of Coorstek’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). Coorstek’s own 5.1 claims/patent is at or below the 11.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Coorstek's grants concentrate

Coorstek KK is a focused PatentsView assignee: 23 CPC subclasses with 40% of grants classified under H01L (Semiconductor Devices NOT Covered BY Class H10). Peak complete grant year is 2018 (6 grants) versus a trough of 1 in 2024. By volume, Coorstek sits between Carmel-haifa University Economic Corporation Ltd. and Caisson Interventional LLC.

Coorstek's three-year grant acceleration

Coorstek KK shows 6 grants in 2022–2024 against only 13 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.

Carmel-haifa Univ…

30
Cascade Maverik L…

30
Ching Feng Home F…

30
Chips & Media

30
Crititech

30
CUB Elecparts

30
Curexo

30
Caisson Intervent…

30
Coorstek KK ◀

30

What this shows Coorstek holds 30 patents at rank #10,277, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Coorstek

By rank, the assignees closest to #10,277 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Coorstek, neither rank-band nor same-CPC leaders (those blocks stay above). In H01L (Semiconductor Devices NOT Covered BY Class H10), Coorstek ranks #838 of 3,373 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (35 here).

Softbank Robotics Europe 35 Beam Engineering for Advanced Measurements Co. 35 Gyrodata, Incorporated 35 Active Motif, Inc. 35

Coorstek's Innovation Score vs. every tracked assignee

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

35 49th percentile higher than 49% 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 · 2016–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Coorstek KK patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	6.7%
2017	3	10.0%
2018	6	20.0%
2019	4	13.3%
2020	5	16.7%
2021	4	13.3%
2022	3	10.0%
2023	2	6.7%
2024	1	3.3%

Which technologies does Coorstek KK patent most?

H01L - Semiconductor Devices NOT Covered BY Class H10 12

H10D - Inorganic Electric Semiconductor Devices 9

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 8

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 3

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 3

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 3

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 2

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 2

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

G03B - Apparatus OR Arrangements FOR Taking Photographs OR FOR Projecting OR Viewing THEM; Apparatus OR Arrangements Employing Analogous Techniques Using Waves Other Than Optical WAVES; Accessories Therefor 1

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 1

H01J - Electric Discharge Tubes OR Discharge Lamps 1

C01F - Compounds OF THE Metals Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium, OR OF THE Rare-earth Metals 1

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

B01D - Separation 1

Top 15 of 23 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

Coorstek KK's patent record in context - here's where to go next.

Coorstek KK's lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 40% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #10,290 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Coorstek KK against Carmel-haifa University Economic Corporation Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.9/100 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.