Where does Primearth EV Energy Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Primearth EV Energy Co., Ltd ranks #7,760 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 Primearth EV Energy Co., Ltd hold?

Primearth EV Energy Co., Ltd holds 42 US utility patents granted between 2015 and 2025, spanning 20 technology areas.

What is Primearth EV Energy Co., Ltd's Innovation Score?

Primearth EV Energy Co., Ltd has an Innovation Score of 40.4 out of 100 (top 36% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Primearth EV Energy Co., Ltd's patent grant rate increasing or decreasing?

Primearth EV Energy Co., Ltd's recent grant velocity is -46% 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 Primearth EV Energy Co., Ltd's patents?

Primearth EV Energy Co., Ltd's patents average 8.2 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 Primearth EV Energy 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

Primearth EV Energy Co., Ltd

Q: What technology areas does Primearth EV Energy Co., Ltd focus on?

Primearth EV Energy Co., Ltd's top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 33 patents, ranking #471 of 5,963 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

USPTO PatentsView assignee record - 42 granted patents across 20 technology areas, recorded in grant years 2015–2025. 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: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Primearth ranks #7,760 of 49,997 tracked US assignees by granted-patent volume, with 42 patents across 20 technology areas.

#7,760
of 49,997 US assignees by volume: Top 36%
by Innovation Score (40.4/100): 8.2
avg claims per patent: -46%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7760 · Foreign Corporation #7,760 · 42 grants

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

GRANTS-SMALL 42 grants
UPPER-Q #7,760/49,997
PHOTO-FINISH Ouraring
CPC-FOCUS Y02E · 20 areas
INNOV-PAR 40.4/100
CLAIMS-PAR 8.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -46% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Ouraring 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 Primearth’s 40.4 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 13.0 pts (32%) Velocity 6.7 pts (17%) Breadth 15.8 pts (39%) Claim depth 4.9 pts (12%)

Qualcomm Incorporated · highest

85
Durect · near

40
Fluidmaster · near

40
Primearth EV Energy · this assignee

40
Shenzhen Jisu… · near

40
Toyo Gosei · near

40
3D Lighting… · lowest

7

What this shows Primearth's Innovation Score is 40.4/100 (top 36% 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 Primearth?

Each dot is one of Primearth’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). Primearth’s own 8.2 claims/patent is at or below the 16.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Primearth's grants concentrate

Primearth EV Energy Co., Ltd is a focused PatentsView assignee: 20 CPC subclasses with 78.6% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2018 (7 grants) versus a trough of 2 in 2015. By volume, Primearth sits between Ouraring Inc. and Quality Electrodynamics, LLC.

Primearth's three-year grant acceleration

Primearth EV Energy Co., Ltd shows 10 grants in 2022–2024 against only 10 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.

Ouraring

42
Overstock com

42
Peraso

42
Petroliam Nasiona…

42
Peridot Print

42
Pioneer Pet Produ…

42
Powdertech

42
Quality Electrody…

42
Primearth EV Ener… ◀

42

What this shows Primearth holds 42 patents at rank #7,756, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Primearth

By rank, the assignees closest to #7,756 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Primearth, neither rank-band nor same-CPC leaders (those blocks stay above). In Y02E (Reduction OF Greenhouse GAS [GHG] Emissions), Primearth ranks #471 of 5,963 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (40 here).

Durect Corporation 40 Toyo Gosei Co., Ltd. 40 Shenzhen Jisu Technology Co., Ltd 40 Fluidmaster, Inc. 40

Primearth's Innovation Score vs. every tracked assignee

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

40 Top 36% higher than 64% 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 · 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

Primearth EV Energy Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	4.8%
2016	6	14.3%
2017	5	11.9%
2018	7	16.7%
2019	6	14.3%
2020	2	4.8%
2021	2	4.8%
2022	4	9.5%
2024	6	14.3%
2025partial year	2	4.8%

Which technologies does Primearth EV Energy Co., Ltd patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 33

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 33

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 15

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 10

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 8

Y02T - Climate Change Mitigation Technologies Related TO Transportation 7

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 6

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 5

Y10T - Technical Subjects Covered BY Former US Classification 4

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 3

C22C - Alloys 2

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 1

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 1

C25D - Processes FOR THE Electrolytic OR Electrophoretic Production OF COATINGS; ELECTROFORMING; Apparatus Therefor 1

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 1

Top 15 of 20 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

Primearth EV Energy Co., Ltd's patent record in context - here's where to go next.

Primearth EV Energy Co., Ltd's lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 78.6% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #7,760 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Primearth EV Energy Co., Ltd against Ouraring Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.4/100 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.