Where does Sumitomo Bakelite Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumitomo Bakelite Co., Ltd. ranks #2,302 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 Sumitomo Bakelite Co., Ltd. hold?

Sumitomo Bakelite Co., Ltd. holds 170 US utility patents granted between 2015 and 2025, spanning 92 technology areas.

What is Sumitomo Bakelite Co., Ltd.'s Innovation Score?

Sumitomo Bakelite Co., Ltd. has an Innovation Score of 55.7 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%).

What technology areas does Sumitomo Bakelite Co., Ltd. focus on?

Sumitomo Bakelite Co., Ltd.'s top technology area is C08L (Compositions OF Macromolecular Compounds) with 41 patents, ranking #128 of 2,352 assignees active in that subclass. Grants appear in 92 CPC subclasses total.

Is Sumitomo Bakelite Co., Ltd.'s patent grant rate increasing or decreasing?

Sumitomo Bakelite Co., Ltd.'s recent grant velocity is -68% 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 Sumitomo Bakelite Co., Ltd.'s patents?

Sumitomo Bakelite Co., Ltd.'s patents average 14.6 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 Sumitomo Bakelite 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

Sumitomo Bakelite Co., Ltd.

USPTO PatentsView assignee record - 170 granted patents across 92 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: C08L (Compositions OF Macromolecular Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sumitomo ranks #2,302 of 49,997 tracked US assignees by granted-patent volume, with 170 patents across 92 technology areas.

#2,302
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.7/100): 14.6
avg claims per patent: -68%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2302 · Foreign Corporation #2,302 · 170 grants

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

GRANTS-MID 170 grants
TOP-DECILE #2,302/49,997
PHOTO-FINISH Energizer Brands
CPC-WIDE C08L · 92 areas
INNOV-PAR 55.7/100
CLAIMS-RICH 14.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -68% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Energizer Brands, 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 Sumitomo’s 55.7 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 17.8 pts (32%) Velocity 4.2 pts (8%) Breadth 25.0 pts (45%) Claim depth 8.7 pts (16%)

Qualcomm Incorporated · highest

85
Tanaka Kikinzoku… · near

56
Trumpf Werkzeugmasch… · near

56
Architecture… · near

56
Sumitomo Bakelite · this assignee

56
Caterpillar Sarl · near

56
3D Lighting… · lowest

7

What this shows Sumitomo's Innovation Score is 55.7/100 (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.

Does more volume mean deeper claims for Sumitomo?

Each dot is one of Sumitomo’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). Sumitomo’s own 14.6 claims/patent is ABOVE the 13.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

How Sumitomo's grant cadence moved

Between 2020–2024, Sumitomo Bakelite Co., Ltd. received 40 grants versus 124 in 2015–2019 (-68% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2015 at 32 grants and bottomed in 2020 at 6. Lead class C08L accounts for 24.1% of the portfolio across 92 subclasses. Volume neighbours: Energizer Brands, LLC (#2,298) and Asahi Kasei Chemicals Corporation (#2,306).

Sumitomo's three-year grant acceleration

From 2019–2021 to 2022–2024, Sumitomo Bakelite Co., Ltd. moved from 38 to 24 grants (0.63x 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 #2,364. See the growth leaderboard.

Energizer Brands

170
ITT Manufacturing…

170
Metaswitch Networ…

170
Spectranetics

170
Sungrow Power Sup…

170
Ultrahaptics IP T…

170
Sumitomo Bakelite ◀

170
7-eleven

169
Asahi Kasei Chemi…

169

What this shows Sumitomo holds 170 patents at rank #2,302, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumitomo

By rank, the assignees closest to #2,302 in granted patent volume.

Leaders in C08L (Compositions OF Macromolecular Compounds)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sumitomo, neither rank-band nor same-CPC leaders (those blocks stay above). In C08L (Compositions OF Macromolecular Compounds), Sumitomo ranks #128 of 2,352 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (56 here).

Architecture Technology Corporation 56 Caterpillar Sarl 56 Trumpf Werkzeugmaschinen GmbH + Co. KG 56 Tanaka Kikinzoku Kogyo K.K. 56

Similar claim depth

Nearest assignees by average claims per patent (14.6 here).

Watts Regulator Co. 14.6 avg GM Global Technology Operations LLC 14.6 avg Johnson Electric International AG 14.6 avg Otsuka Pharmaceutical Co., Ltd. 14.6 avg

Sumitomo'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

Sumitomo Bakelite Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	32	18.8%
2016	28	16.5%
2017	21	12.4%
2018	21	12.4%
2019	22	12.9%
2020	6	3.5%
2021	10	5.9%
2022	9	5.3%
2023	7	4.1%
2024	8	4.7%
2025partial year	6	3.5%

Which technologies does Sumitomo Bakelite Co., Ltd. patent most?

C08L - Compositions OF Macromolecular Compounds 41

H01L - Semiconductor Devices NOT Covered BY Class H10 40

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 37

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 35

Y10T - Technical Subjects Covered BY Former US Classification 17

G02B - Optical Elements, Systems OR Apparatus 17

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 16

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 16

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 15

G03F - Photomechanical Production OF Textured OR Patterned Surfaces, e.g. FOR Printing, FOR Processing OF Semiconductor DEVICES; Materials THEREFOR; Originals THEREFOR; Apparatus Specially Adapted THEREFOR; 15

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 14

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 13

A61B - DIAGNOSIS; SURGERY; Identification 13

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 13

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 13

Top 15 of 92 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

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

Sumitomo Bakelite Co., Ltd.'s lead technology class is C08L (Compositions OF Macromolecular Compounds), 24.1% of its portfolio - see every assignee active in that class. Explore C08L
Ranked #2,302 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumitomo Bakelite Co., Ltd. against Energizer Brands, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.7/100 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.