Where does Showa Denko Packaging Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Showa Denko Packaging Co., Ltd. ranks #7,620 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 Packaging Co., Ltd. hold?

Showa Denko Packaging Co., Ltd. holds 43 US utility patents granted between 2015 and 2024, spanning 21 technology areas.

What is Showa Denko Packaging Co., Ltd.'s Innovation Score?

Showa Denko Packaging Co., Ltd. has an Innovation Score of 40.2 out of 100 (top 36% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Showa Denko Packaging Co., Ltd.'s patent grant rate increasing or decreasing?

Showa Denko Packaging Co., Ltd.'s recent grant velocity is -52% 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 Packaging Co., Ltd.'s patents?

Showa Denko Packaging Co., Ltd.'s patents average 10.2 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 Packaging 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

Showa Denko Packaging Co., Ltd.

Q: What technology areas does Showa Denko Packaging Co., Ltd. focus on?

Showa Denko Packaging Co., Ltd.'s top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 42 patents, ranking #358 of 5,963 assignees active in that subclass. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 43 granted patents across 21 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: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Showa ranks #7,620 of 49,997 tracked US assignees by granted-patent volume, with 43 patents across 21 technology areas.

#7,620
of 49,997 US assignees by volume: Top 36%
by Innovation Score (40.2/100): 10.2
avg claims per patent: -52%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7620 · Foreign Corporation #7,620 · 43 grants

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

GRANTS-SMALL 43 grants
UPPER-Q #7,620/49,997
PHOTO-FINISH Roxtec AB
CPC-FOCUS Y02E · 21 areas
INNOV-PAR 40.2/100
CLAIMS-PAR 10.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -52% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Roxtec AB (±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 40.2 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 13.1 pts (33%) Velocity 4.8 pts (12%) Breadth 16.2 pts (40%) Claim depth 6.1 pts (15%)

Qualcomm Incorporated · highest

85
Ipsen Biopharm · near

40
NETZSCH-Gerätebau · near

40
Showa Denko Packaging · this assignee

40
Tearscience · near

40
Ultra-Mek · near

40
3D Lighting… · lowest

7

What this shows Showa's Innovation Score is 40.2/100 (top 36% 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 10.2 claims/patent is ABOVE the 9.9 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 Packaging Co., Ltd. is a focused PatentsView assignee: 21 CPC subclasses with 97.7% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2016 (7 grants) versus a trough of 1 in 2024. By volume, Showa sits between Roxtec AB and Saverglass.

Showa's three-year grant acceleration

Showa Denko Packaging Co., Ltd. shows 8 grants in 2022–2024 against only 11 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.

Roxtec AB

43
Rubicon Global Ho…

43
SGL Carbon SE

43
Shibuya

43
Standard CAR Truck

43
Sumitomo Electric…

43
Suss Microtec Lit…

43
Saverglass

43
Showa Denko Packa… ◀

43

What this shows Showa holds 43 patents at rank #7,617, 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 #7,617 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Showa, neither rank-band nor same-CPC leaders (those blocks stay above). In Y02E (Reduction OF Greenhouse GAS [GHG] Emissions), Showa ranks #358 of 5,963 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (40 here).

Ipsen Biopharm Limited 40 Tearscience, Inc. 40 NETZSCH-Gerätebau GmbH 40 Ultra-Mek, Inc. 40

Showa's Innovation Score vs. every tracked assignee

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

40 Top 36% higher than 64% 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

Showa Denko Packaging Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	11.6%
2016	7	16.3%
2017	6	14.0%
2018	6	14.0%
2019	5	11.6%
2020	4	9.3%
2021	2	4.7%
2022	3	7.0%
2023	4	9.3%
2024	1	2.3%

Which technologies does Showa Denko Packaging Co., Ltd. patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 42

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 40

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 25

Y10T - Technical Subjects Covered BY Former US Classification 15

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 13

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 12

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 5

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 5

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 4

Y02T - Climate Change Mitigation Technologies Related TO Transportation 4

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 4

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 2

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 2

B41J - TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

Top 15 of 21 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 Packaging Co., Ltd.'s patent record in context - here's where to go next.

Showa Denko Packaging Co., Ltd.'s lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 97.7% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #7,620 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Showa Denko Packaging Co., Ltd. against Roxtec AB, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.2/100 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.