Where does Showa Denko Carbon Germany GmbH rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Showa Denko Carbon Germany GmbH ranks #43,075 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 Showa Denko Carbon Germany GmbH hold?

Showa Denko Carbon Germany GmbH holds 6 US utility patents granted between 2018 and 2021, spanning 13 technology areas.

What is Showa Denko Carbon Germany GmbH's Innovation Score?

Showa Denko Carbon Germany GmbH has an Innovation Score of 27.4 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%).

Is Showa Denko Carbon Germany GmbH's patent grant rate increasing or decreasing?

Showa Denko Carbon Germany GmbH's recent grant velocity is -80% 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 Showa Denko Carbon Germany GmbH's patents?

Showa Denko Carbon Germany GmbH's patents average 13.2 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 Showa Denko Carbon Germany GmbH 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

Showa Denko Carbon Germany GmbH

Q: What technology areas does Showa Denko Carbon Germany GmbH focus on?

Showa Denko Carbon Germany GmbH's top technology area is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General) with 4 patents, ranking #712 of 2,247 assignees active in that subclass. Grants appear in 13 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 13 technology areas, recorded in grant years 2018–2021. 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: H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Showa ranks #43,075 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 13 technology areas.

#43,075
of 49,997 US assignees by volume: 24th percentile
by Innovation Score (27.4/100): 13.2
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R43075 · Foreign Corporation #43,075 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #43,075/49,997
PHOTO-FINISH Shiraishi Central…
CPC-FOCUS H05B · 13 areas
INNOV-THIN 27.4/100
CLAIMS-RICH 13.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Shiraishi Central Laboratories 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 Showa’s 27.4 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 (25%) Velocity 0.0 pts (0%) Breadth 12.7 pts (47%) Claim depth 7.9 pts (29%)

Qualcomm Incorporated · highest

85
Showa Denko Carbon… · this assignee

27
3D Lighting… · lowest

7

What this shows Showa's Innovation Score is 27.4/100 (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 Showa?

Each dot is one of Showa’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). Showa’s own 13.2 claims/patent is ABOVE the 11.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Showa's grants concentrate

Showa Denko Carbon Germany GmbH is a focused PatentsView assignee: 13 CPC subclasses with 66.7% of grants classified under H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General). Peak complete grant year is 2019 (4 grants) versus a trough of 1 in 2018. By volume, Showa sits between Shiraishi Central Laboratories Co. Ltd. and Sidus Technologies Inc..

Shiraishi Central…

6
Shizuoka Prefectu…

6
Shock Alert

6
Shoulder Friends…

6
Shummi Enterprise

6
SI2

6
Sichuan Golden Ri…

6
Sidus

6
Showa Denko Carbo… ◀

6

What this shows Showa holds 6 patents at rank #42,882, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Showa

By rank, the assignees closest to #42,882 in granted patent volume.

Leaders in H05B (Electric Heating)

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

Showa's Innovation Score vs. every tracked assignee

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

27 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 · 2018–2021

Grants by year

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

View data table

Showa Denko Carbon Germany GmbH patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	16.7%
2019	4	66.7%
2021	1	16.7%

Which technologies does Showa Denko Carbon Germany GmbH patent most?

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 4

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 3

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 2

C21C - Processing OF Pig-iron, e.g. Refining, Manufacture OF Wrought-iron OR STEEL; Treatment IN Molten State OF Ferrous Alloys 2

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 2

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

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

D01F - Chemical Features IN THE Manufacture OF Artificial Filaments, Threads, Fibres, Bristles OR RIBBONS; Apparatus Specially Adapted FOR THE Manufacture OF Carbon Filaments 1

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 1

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 1

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 1

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 1

Top 13 of 13 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

Showa Denko Carbon Germany GmbH's patent record in context - here's where to go next.

Showa Denko Carbon Germany GmbH's lead technology class is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General), 66.7% of its portfolio - see every assignee active in that class. Explore H05B
Ranked #43,075 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Showa Denko Carbon Germany GmbH against Shiraishi Central Laboratories Co. Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.4/100 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.