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

According to USPTO PatentsView (2015–2025 granted utility patents), Zhejiang Dingli Machinery Co., Ltd. ranks #27,902 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 Dingli Machinery Co., Ltd. hold?

Zhejiang Dingli Machinery Co., Ltd. holds 10 US utility patents granted between 2017 and 2024, spanning 7 technology areas.

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

Zhejiang Dingli Machinery Co., Ltd. has an Innovation Score of 25.5 out of 100 (18th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Zhejiang Dingli Machinery Co., Ltd.'s recent grant velocity is -57% 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 Zhejiang Dingli Machinery Co., Ltd.'s patents?

Zhejiang Dingli Machinery Co., Ltd.'s patents average 4.8 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 Dingli Machinery 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 Dingli Machinery Co., Ltd.

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

Zhejiang Dingli Machinery Co., Ltd.'s top technology area is B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load) with 7 patents, ranking #51 of 447 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 10 granted patents across 7 technology areas, recorded in grant years 2017–2024. 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: B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load).

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 #27,902 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 7 technology areas.

#27,902
of 49,997 US assignees by volume: 18th percentile
by Innovation Score (25.5/100): 4.8
avg claims per patent: -57%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R27902 · Foreign Corporation #27,902 · 10 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 10 grants
MID-PACK #27,902/49,997
PHOTO-FINISH Zephyrtel
CPC-NARROW B66F · 7 areas
INNOV-THIN 25.5/100
CLAIMS-SPARSE 4.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -57% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Zephyrtel, Inc. (±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 25.5 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 8.3 pts (32%) Velocity 5.0 pts (20%) Breadth 9.4 pts (37%) Claim depth 2.9 pts (11%)

Qualcomm Incorporated · highest

85
Zhejiang Dingli… · this assignee

26
3D Lighting… · lowest

7

What this shows Zhejiang's Innovation Score is 25.5/100 (18th percentile 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 4.8 claims/patent is at or below the 13.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Zhejiang's grants concentrate

Zhejiang Dingli Machinery Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 70% of grants classified under B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load). Peak complete grant year is 2019 (4 grants) versus a trough of 1 in 2017. By volume, Zhejiang sits between Zephyrtel, Inc. and ZHU HAI Fuyun Lighting Industrial Co., Ltd..

Zhejiang's three-year grant acceleration

Zhejiang Dingli Machinery Co., Ltd. shows 3 grants in 2022–2024 against only 4 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.

Zephyrtel

10
Zetta Research AN…

10
Zgtl

10
Zhejiang Aerlang…

10
Zhejiang Jiuzhou…

10
Zhengzhou Researc…

10
Zhongying Changji…

10
ZHU HAI Fuyun Lig…

10
Zhejiang Dingli M… ◀

10

What this shows Zhejiang holds 10 patents at rank #27,879, 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 #27,879 in granted patent volume.

Leaders in B66F (Hoisting)

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)

26 18th percentile higher than 18% 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 · 2017–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Zhejiang Dingli Machinery Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	10.0%
2018	2	20.0%
2019	4	40.0%
2023	1	10.0%
2024	2	20.0%

Which technologies does Zhejiang Dingli Machinery Co., Ltd. patent most?

B66F - Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load 7

B66C - CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles 3

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

F16H - Gearing 1

E04G - SCAFFOLDING; FORMS; SHUTTERING; Building Implements OR Aids, OR Their USE; Handling Building Materials ON THE SITE; Repairing, Breaking-up OR Other Work ON Existing Buildings 1

B25J - MANIPULATORS; Chambers Provided With Manipulation Devices 1

A62B - Devices, Apparatus OR Methods FOR Life-saving 1

Top 7 of 7 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 Dingli Machinery Co., Ltd.'s patent record in context - here's where to go next.

Zhejiang Dingli Machinery Co., Ltd.'s lead technology class is B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load), 70% of its portfolio - see every assignee active in that class. Explore B66F
Ranked #27,902 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhejiang Dingli Machinery Co., Ltd. against Zephyrtel, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 25.5/100 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.