USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Electric Hardmetal Corp.

USPTO PatentsView assignee record - 459 granted patents across 49 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B23B (TURNING; BORING).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

459

Total patents granted

CPC technology areas

5.9

Avg claims per patent

+112%

5-year filing velocity

The verdict

Sumitomo holds 459 US patents across 49 technology areas, rank #960 of 50,000 tracked assignees.

#960
of 50,000 US assignees by volume: Top 6%
by Innovation Score (56.5/100): 5.9
avg claims per patent: +112%
filing velocity, last 5 yrs

Portfolio overview

Sumitomo Electric Hardmetal Corp. has been granted 459 US utility patents between 2015 and 2025, placing Sumitomo Electric Hardmetal Corp. at rank #960 across all assignees tracked by PlainPatent. This portfolio spans 49 distinct Cooperative Patent Classification (CPC) subclasses, averaging 5.9 claims per patent with primary concentration in B23B (TURNING; BORING). As a Foreign Corporation, Sumitomo Electric Hardmetal Corp. is one of the more focused assignees in the PatentsView dataset. By volume, Sumitomo sits between CNH Industrial Canada, Ltd. (462 patents, rank #956) and Fisher Controls International Llc (456 patents, rank #964) - the closest US assignees by grant volume. The composite Innovation Score of 56.5/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 312 grants, compared with 147 in the 2015–2019 window, a +112% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Sumitomo Electric Hardmetal Corp.'s 5.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 49 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumitomo Electric Hardmetal Corp. against peers pursuing similar technology classes.

CNH Industrial Ca…

462
Himax

462
Riken

461
Cellco Partnership

459
Sumitomo Electric… ◀

459
Huazhong Universi…

458
Sandvik Intellect…

458
ADP

457
Fisher Controls I…

456

What this shows Sumitomo holds 459 patents at rank #960, 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 #960 in granted patent volume.

Leaders in B23B (Turning)

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

Sumitomo's Innovation Score vs. every tracked assignee

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

57 Top 6% higher than 94% of 50,000 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 Electric Hardmetal Corp. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	21	4.6%
2016	23	5.0%
2017	26	5.7%
2018	45	9.8%
2019	32	7.0%
2020	43	9.4%
2021	61	13.3%
2022	60	13.1%
2023	33	7.2%
2024	51	11.1%
2025	64	13.9%

Which technologies does Sumitomo Electric Hardmetal Corp. patent most?

B23B - TURNING; BORING 229

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 132

B23C - MILLING 101

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 63

C22C - ALLOYS 56

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 52

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 42

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 20

B23D - PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR 17

B23P - METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 16

B23F - MAKING GEARS OR TOOTHED RACKS 16

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 15

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 14

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 9

B23G - THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH 9

Top 15 of 49 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#960

Across all tracked assignees

Innovation Score

56.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Sumitomo Electric Hardmetal Corp. hold?

Sumitomo Electric Hardmetal Corp. holds 459 US granted patents filed between 2015 and 2025, spanning 49 technology areas.

What is Sumitomo Electric Hardmetal Corp.'s Innovation Score?

Sumitomo Electric Hardmetal Corp. has an Innovation Score of 56.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumitomo Electric Hardmetal Corp. focus on?

Sumitomo Electric Hardmetal Corp.'s top technology area is B23B (TURNING; BORING) with 229 patents. The company has filed patents in 49 CPC subclasses total.

Is Sumitomo Electric Hardmetal Corp.'s patent filing rate increasing or decreasing?

Sumitomo Electric Hardmetal Corp.'s recent filing velocity is +112% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Sumitomo Electric Hardmetal Corp.'s patents?

Sumitomo Electric Hardmetal Corp.'s patents average 5.9 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Sumitomo Electric Hardmetal Corp. 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.

How to use this portfolio

Sumitomo's 459 grants land it in the top 6% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Sumitomo ranks #960 of 50,000. Top 50 holders
Most of this portfolio concentrates in B23B - see who else leads that technology area. B23B leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.