Where does Zhejiang Hailiang Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zhejiang Hailiang Co., Ltd. ranks #30,673 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 Zhejiang Hailiang Co., Ltd. hold?

Zhejiang Hailiang Co., Ltd. holds 9 US utility patents granted between 2022 and 2024, spanning 11 technology areas.

What is Zhejiang Hailiang Co., Ltd.'s Innovation Score?

Zhejiang Hailiang Co., Ltd. has an Innovation Score of 45.6 out of 100 (top 23% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Zhejiang Hailiang Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Zhejiang Hailiang Co., Ltd..

What does claim depth mean for Zhejiang Hailiang Co., Ltd.'s patents?

Zhejiang Hailiang Co., Ltd.'s patents average 9.9 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.

How is the Zhejiang Hailiang 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

Zhejiang Hailiang Co., Ltd.

Q: What technology areas does Zhejiang Hailiang Co., Ltd. focus on?

Zhejiang Hailiang Co., Ltd.'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 5 patents, ranking #64 of 350 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

USPTO PatentsView assignee record - 9 granted patents across 11 technology areas, recorded in grant years 2022–2024. 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: 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Zhejiang ranks #30,673 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 11 technology areas.

#30,673
of 49,997 US assignees by volume: Top 23%
by Innovation Score (45.6/100): 9.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R30673 · Foreign Corporation #30,673 · 9 grants

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

GRANTS-MICRO 9 grants
MID-PACK #30,673/49,997
PHOTO-FINISH Zhaoqing Junhong
CPC-FOCUS F27D · 11 areas
INNOV-PAR 45.6/100
CLAIMS-PAR 9.9 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2024 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Zhaoqing Junhong 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 Zhejiang’s 45.6 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 (18%) Velocity 20.0 pts (44%) Breadth 11.7 pts (26%) Claim depth 5.9 pts (13%)

Qualcomm Incorporated · highest

85
Zhejiang Hailiang · this assignee

46
3D Lighting… · lowest

7

What this shows Zhejiang's Innovation Score is 45.6/100 (top 23% 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 Zhejiang?

Each dot is one of Zhejiang’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). Zhejiang’s own 9.9 claims/patent is ABOVE the 2.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Zhejiang's grants concentrate

Zhejiang Hailiang Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 55.6% 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 2024 (7 grants) versus a trough of 1 in 2022. By volume, Zhejiang sits between Zhaoqing Junhong Co., Ltd. and Zhejiang Natural Outdoor Goods Inc..

Zhejiang's three-year grant acceleration

Zhejiang Hailiang Co., Ltd. shows 9 grants in 2022–2024 against only 0 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.

Zhaoqing Junhong

9
Zhejiang Academy…

9
Zhejiang Dafeng I…

9
Zhejiang Dtrm Bio…

9
Zhejiang Ikahe Sa…

9
Zhejiang Ledison…

9
Zhejiang LIN Long…

9
Zhejiang Natural…

9
Zhejiang Hailiang ◀

9

What this shows Zhejiang holds 9 patents at rank #30,636, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Zhejiang

By rank, the assignees closest to #30,636 in granted patent volume.

Leaders in F27D (Details OR Accessories OF Furnaces)

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

Zhejiang's Innovation Score vs. every tracked assignee

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

46 Top 23% higher than 77% 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 · 2022–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Zhejiang Hailiang Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	1	11.1%
2023	1	11.1%
2024	7	77.8%

Which technologies does Zhejiang Hailiang Co., Ltd. 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 5

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 4

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 4

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 2

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 2

B24B - Machines, Devices, OR Processes FOR Grinding OR Polishing ; Dressing OR Conditioning OF Abrading SURFACES; Feeding OF Grinding, Polishing, OR Lapping Agents 2

B21C - Manufacture OF Metal Sheets, Wire, Rods, Tubes, Profiles OR Like Semi-manufactured Products Otherwise Than BY ROLLING; Auxiliary Operations Used IN Connection With Metal-working Without Essentially Removing Material 2

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 1

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

C21B - Manufacture OF Iron OR Steel 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

Top 11 of 11 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

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

Zhejiang Hailiang Co., Ltd.'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), 55.6% of its portfolio - see every assignee active in that class. Explore F27D
Ranked #30,673 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhejiang Hailiang Co., Ltd. against Zhaoqing Junhong Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 45.6/100 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.