Where does Zhejiang Prulde Electric Appliance Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zhejiang Prulde Electric Appliance Co., Ltd. ranks #5,731 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 Prulde Electric Appliance Co., Ltd. hold?

Zhejiang Prulde Electric Appliance Co., Ltd. holds 60 US utility patents granted between 2017 and 2025, spanning 15 technology areas.

What is Zhejiang Prulde Electric Appliance Co., Ltd.'s Innovation Score?

Zhejiang Prulde Electric Appliance Co., Ltd. has an Innovation Score of 49.5 out of 100 (top 15% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Zhejiang Prulde Electric Appliance Co., Ltd. focus on?

Zhejiang Prulde Electric Appliance Co., Ltd.'s top technology area is B05B (Spraying APPARATUS; Atomising APPARATUS; Nozzles) with 2 patents, ranking #557 of 1,384 assignees active in that subclass. Grants appear in 15 CPC subclasses total.

Is Zhejiang Prulde Electric Appliance Co., Ltd.'s patent grant rate increasing or decreasing?

Zhejiang Prulde Electric Appliance Co., Ltd.'s recent grant velocity is +600% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Zhejiang Prulde Electric Appliance Co., Ltd.'s patents?

Zhejiang Prulde Electric Appliance Co., Ltd.'s patents average 2.6 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Zhejiang Prulde Electric Appliance Co., Ltd.

Q: How is the Zhejiang Prulde Electric Appliance 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 PatentsView assignee record - 60 granted patents across 15 technology areas, recorded in grant years 2017–2025. 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: B05B (Spraying APPARATUS; Atomising APPARATUS; Nozzles).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Zhejiang ranks #5,731 of 49,997 tracked US assignees by granted-patent volume, with 60 patents across 15 technology areas.

#5,731
of 49,997 US assignees by volume: Top 15%
by Innovation Score (49.5/100): 2.6
avg claims per patent: +600%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5731 · Foreign Corporation #5,731 · 60 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 60 grants
UPPER-Q #5,731/49,997
PHOTO-FINISH [24]7 ai
CPC-FOCUS B05B · 15 areas
INNOV-PAR 49.5/100
CLAIMS-SPARSE 2.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +600% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: [24]7.ai, 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 49.5 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 14.2 pts (29%) Velocity 20.0 pts (40%) Breadth 13.7 pts (28%) Claim depth 1.6 pts (3%)

Qualcomm Incorporated · highest

85
Flir Detection · near

49
Tesla Motors · near

49
Zhejiang Prulde… · this assignee

49
Gutterglove · near

49
Sumitomo Electric… · near

49
3D Lighting… · lowest

7

What this shows Zhejiang's Innovation Score is 49.5/100 (top 15% 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 2.6 claims/patent is at or below the 16.1 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 Prulde Electric Appliance Co., Ltd. is a focused PatentsView assignee: 15 CPC subclasses with 3.3% of grants classified under B05B (Spraying APPARATUS; Atomising APPARATUS; Nozzles). Peak complete grant year is 2022 (23 grants) versus a trough of 1 in 2018. By volume, Zhejiang sits between WinField Solutions, LLC and Alaxala Networks Corporation.

Zhejiang's three-year grant acceleration

Zhejiang Prulde Electric Appliance Co., Ltd. shows 38 grants in 2022–2024 against only 6 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.

Winfield Solutions

60
Woods Hole Oceano…

60
Workhorse Group

60
Wyatt Technology

60
Zonar Systems

60
[24]7 ai

60
mophie

60
Zhejiang Prulde E… ◀

60
Alaxala Networks

59

What this shows Zhejiang holds 60 patents at rank #5,729, 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 #5,729 in granted patent volume.

Leaders in B05B (Spraying Apparatus)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Zhejiang, neither rank-band nor same-CPC leaders (those blocks stay above). In B05B (Spraying Apparatus), Zhejiang ranks #557 of 1,384 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (49 here).

Flir Detection, Inc. 49 Tesla Motors, Inc. 49 Sumitomo Electric Sintered Alloy, Ltd. 49 Gutterglove, Inc. 49

Similar claim depth

Nearest assignees by average claims per patent (2.6 here).

Suncast Technologies, LLC 2.6 avg Qingdao Ecopure Filter Co., Ltd. 2.6 avg E. Mishan & Sons, Inc. 2.6 avg AIR Cool Industrial Co., Ltd. 2.6 avg

Zhejiang's Innovation Score vs. every tracked assignee

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

49 Top 15% higher than 85% 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 · 2017–2025

Grants by year

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

View data table

Zhejiang Prulde Electric Appliance Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	3	5.0%
2018	1	1.7%
2019	2	3.3%
2020	2	3.3%
2021	2	3.3%
2022	23	38.3%
2023	2	3.3%
2024	13	21.7%
2025partial year	12	20.0%

Which technologies does Zhejiang Prulde Electric Appliance Co., Ltd. patent most?

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 2

F24H - Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General 2

A47L - Domestic Washing OR Cleaning ; Suction Cleaners IN General 2

B05C - Apparatus FOR Applying Fluent Materials TO Surfaces, IN General 1

B25C - Hand-held Nailing OR Stapling TOOLS; Manually Operated Portable Stapling Tools 1

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 1

B24C - Abrasive OR Related Blasting With Particulate Material 1

A01M - Catching, Trapping OR Scaring OF Animals ; Apparatus FOR THE Destruction OF Noxious Animals OR Noxious Plants 1

A01G - HORTICULTURE; Cultivation OF Vegetables, Flowers, Rice, Fruit, Vines, Hops OR SEAWEED; FORESTRY; Watering 1

F04D - Non-positive-displacement Pumps 1

B24B - Machines, Devices, OR Processes FOR Grinding OR Polishing ; Dressing OR Conditioning OF Abrading SURFACES; Feeding OF Grinding, Polishing, OR Lapping Agents 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

F16H - Gearing 1

B25F - Combination OR Multi-purpose Tools NOT Otherwise Provided FOR; Details OR Components OF Portable Power-driven Tools NOT Particularly Related TO THE Operations Performed AND NOT Otherwise Provided FOR 1

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

Top 15 of 15 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 Prulde Electric Appliance Co., Ltd.'s patent record in context - here's where to go next.

Zhejiang Prulde Electric Appliance Co., Ltd.'s lead technology class is B05B (Spraying APPARATUS; Atomising APPARATUS; Nozzles), 3.3% of its portfolio - see every assignee active in that class. Explore B05B
Ranked #5,731 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhejiang Prulde Electric Appliance Co., Ltd. against WinField Solutions, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 49.5/100 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.