Where does HarbisonWalker International Holdings, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), HarbisonWalker International Holdings, Inc. ranks #28,935 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 HarbisonWalker International Holdings, Inc. hold?

HarbisonWalker International Holdings, Inc. holds 9 US utility patents granted between 2020 and 2025, spanning 17 technology areas.

What is HarbisonWalker International Holdings, Inc.'s Innovation Score?

HarbisonWalker International Holdings, Inc. has an Innovation Score of 49.9 out of 100 (top 14% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is HarbisonWalker International Holdings, Inc.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for HarbisonWalker International Holdings, Inc..

What does claim depth mean for HarbisonWalker International Holdings, Inc.'s patents?

HarbisonWalker International Holdings, Inc.'s patents average 17.9 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.

USPTO 2015–2025 USPTO PatentsView US Corporation

HarbisonWalker International Holdings, Inc.

Q: What technology areas does HarbisonWalker International Holdings, Inc. focus on?

HarbisonWalker International Holdings, Inc.'s top technology area is 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) with 6 patents, ranking #49 of 350 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

Q: How is the HarbisonWalker International Holdings, Inc. 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 PatentsView assignee record - 9 granted patents across 17 technology areas, recorded in grant years 2020–2025. 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: 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).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Harbisonwalker ranks #28,935 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 17 technology areas.

#28,935
of 49,997 US assignees by volume: Top 14%
by Innovation Score (49.9/100): 17.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R28935 · US Corporation #28,935 · 9 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 9 grants
MID-PACK #28,935/49,997
PHOTO-FINISH Hangzhou Timing…
CPC-FOCUS F27D · 17 areas
INNOV-PAR 49.9/100
CLAIMS-RICH 17.9 claims/avg
TYPE-USCORP US Corporation
SPAN-YRS 2020–2025 · 6y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Hangzhou Timing Security Technologies 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 Harbisonwalker’s 49.9 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 8.0 pts (16%) Velocity 16.7 pts (33%) Breadth 14.6 pts (29%) Claim depth 10.7 pts (21%)

Qualcomm Incorporated · highest

85
HarbisonWalker… · this assignee

50
3D Lighting… · lowest

7

What this shows Harbisonwalker's Innovation Score is 49.9/100 (top 14% 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 Harbisonwalker?

Each dot is one of Harbisonwalker’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). Harbisonwalker’s own 17.9 claims/patent is ABOVE the 15.6 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Harbisonwalker's grants concentrate

HarbisonWalker International Holdings, Inc. is a focused PatentsView assignee: 17 CPC subclasses with 66.7% of grants classified under 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). Peak complete grant year is 2022 (2 grants) versus a trough of 1 in 2020. By volume, Harbisonwalker sits between Hangzhou Timing Security Technologies Co., Ltd. and Hatebur Umformmaschinen AG.

Harbisonwalker's three-year grant acceleration

HarbisonWalker International Holdings, Inc. shows 5 grants in 2022–2024 against only 2 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.

Hangzhou Timing S…

9
Hangzhou Yue Fu S…

9
Hanon Systems EFP…

9
Hansa Medical Pro…

9
Harcosemco

9
Harman Becker Gep…

9
Harris Technology

9
Hatebur Umformmas…

9
Harbisonwalker In… ◀

9

What this shows HarbisonWalker holds 9 patents at rank #28,970, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near HarbisonWalker

By rank, the assignees closest to #28,970 in granted patent volume.

Leaders in F27D (Details OR Accessories OF Furnaces)

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

Harbisonwalker's Innovation Score vs. every tracked assignee

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

50 Top 14% higher than 86% 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 · 2020–2025

Grants by year

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

View data table

HarbisonWalker International Holdings, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	1	11.1%
2021	1	11.1%
2022	2	22.2%
2023	1	11.1%
2024	2	22.2%
2025partial year	2	22.2%

Which technologies does HarbisonWalker International Holdings, Inc. patent most?

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 6

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 2

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

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 2

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 1

B07C - Postal SORTING; Sorting Individual Articles, OR Bulk Material FIT TO BE Sorted Piece-meal, e.g. BY Picking 1

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 1

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 1

H04N - Pictorial Communication, e.g. Television 1

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

G06T - Image Data Processing OR Generation, IN General 1

F16M - Frames, Casings OR Beds OF Engines, Machines OR Apparatus, NOT Specific TO Engines, Machines OR Apparatus Provided FOR ELSEWHERE; STANDS; Supports 1

F16B - Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing 1

C21C - Processing OF Pig-iron, e.g. Refining, Manufacture OF Wrought-iron OR STEEL; Treatment IN Molten State OF Ferrous Alloys 1

Top 15 of 17 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

HarbisonWalker International Holdings, Inc.'s patent record in context - here's where to go next.

HarbisonWalker International Holdings, Inc.'s lead technology class is 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), 66.7% of its portfolio - see every assignee active in that class. Explore F27D
Ranked #28,935 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare HarbisonWalker International Holdings, Inc. against Hangzhou Timing Security Technologies Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 49.9/100 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.