Where does Toyo Seikan Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Toyo Seikan Co., Ltd. ranks #1,270 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 Toyo Seikan Co., Ltd. hold?

Toyo Seikan Co., Ltd. holds 333 US utility patents granted between 2015 and 2025, spanning 122 technology areas.

What is Toyo Seikan Co., Ltd.'s Innovation Score?

Toyo Seikan Co., Ltd. has an Innovation Score of 55.8 out of 100 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Toyo Seikan Co., Ltd.'s patent grant rate increasing or decreasing?

Toyo Seikan Co., Ltd.'s recent grant velocity is +1% 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 Toyo Seikan Co., Ltd.'s patents?

Toyo Seikan Co., Ltd.'s patents average 8.1 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 Toyo Seikan 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

Toyo Seikan Co., Ltd.

Q: What technology areas does Toyo Seikan Co., Ltd. focus on?

Toyo Seikan Co., Ltd.'s top technology area is 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) with 141 patents. Grants appear in 122 CPC subclasses total.

USPTO PatentsView assignee record - 333 granted patents across 122 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: 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 F).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Toyo ranks #1,270 of 49,997 tracked US assignees by granted-patent volume, with 333 patents across 122 technology areas.

#1,270
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.8/100): 8.1
avg claims per patent: +1%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1270 · Foreign Corporation #1,270 · 333 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 333 grants
TOP-DECILE #1,270/49,997
PHOTO-FINISH Conduent Business…
CPC-WIDE B65D · 122 areas
INNOV-PAR 55.8/100
CLAIMS-PAR 8.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +1% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Conduent Business Services, 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.

Qualcomm Incorporated · highest

85
Nestec · near

56
The University of… · near

56
Diversey · near

56
Hitachi High- · near

56
Toyo Seikan · this assignee

56
3D Lighting… · lowest

7

What this shows Toyo's Innovation Score is 55.8/100 (top 7% 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.

How Toyo's grant cadence moved

Between 2020–2024, Toyo Seikan Co., Ltd. received 149 grants versus 148 in 2015–2019 (+1% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2024 at 44 grants and bottomed in 2023 at 21. Lead class B65D accounts for 42.3% of the portfolio across 122 subclasses. Volume neighbours: Unimicron Technology Corp. (#1,266) and Toyobo Co., Ltd. (#1,274).

Toyo's three-year grant acceleration

From 2019–2021 to 2022–2024, Toyo Seikan Co., Ltd. moved from 101 to 89 grants (0.88x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,549. See the growth leaderboard.

Unimicron Technol…

334
Vertex Pharmaceut…

334
Conduent Business…

333
Mentor Graphics

333
Toyo Seikan ◀

333
Cartier Internati…

332
ICU Medical

332
Soitec

332
Toyobo

332

What this shows Toyo holds 333 patents at rank #1,270, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Toyo

By rank, the assignees closest to #1,270 in granted patent volume.

Leaders in B65D (Containers FOR Storage OR Transport OF Articles OR Materials)

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

Assignees with similar portfolio profiles

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

Similar innovation score

Nearest assignees by Innovation Score (56 here).

Hitachi High-Technologies Corporation 56 Diversey, Inc. 56 Nestec S.A. 56 The University of Toledo 56

Similar claim depth

Nearest assignees by average claims per patent (8.1 here).

Ford Motor Company 8.1 avg Central Garden & PET Company 8.1 avg Amorepacific Corporation 8.1 avg Lashify, Inc. 8.1 avg

Toyo's Innovation Score vs. every tracked assignee

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

56 Top 7% higher than 93% 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

Toyo Seikan Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	24	7.2%
2016	23	6.9%
2017	29	8.7%
2018	31	9.3%
2019	41	12.3%
2020	34	10.2%
2021	26	7.8%
2022	24	7.2%
2023	21	6.3%
2024	44	13.2%
2025partial year	36	10.8%

Which technologies does Toyo Seikan Co., Ltd. patent most?

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 141

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 76

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 54

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 46

Y10T - Technical Subjects Covered BY Former US Classification 40

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 35

C12M - Apparatus FOR Enzymology OR MICROBIOLOGY; Apparatus FOR Culturing Microorganisms FOR Producing Biomass, FOR Growing Cells OR FOR Obtaining Fermentation OR Metabolic Products, i.e. Bioreactors OR Fermenters 31

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 29

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 29

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 27

C08L - Compositions OF Macromolecular Compounds 26

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 25

B65B - Machines, Apparatus OR Devices FOR, OR Methods OF, Packaging Articles OR MATERIALS; Unpacking 20

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 19

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 18

Top 15 of 122 technology areas

Where it ranks

Overall rank by patents

#1,270

of 49,997 tracked assignees

Innovation Score

55.8 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

Toyo Seikan Co., Ltd.'s patent record in context - here's where to go next.

Toyo Seikan Co., Ltd.'s lead technology class is 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 F), 42.3% of its portfolio - see every assignee active in that class. Explore B65D
Ranked #1,270 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Toyo Seikan Co., Ltd. against Unimicron Technology Corp., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.8/100 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.