Where does Haihong Electric Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Haihong Electric Co., Ltd. ranks #18,696 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 Haihong Electric Co., Ltd. hold?

Haihong Electric Co., Ltd. holds 15 US utility patents granted between 2015 and 2025, spanning 4 technology areas.

What is Haihong Electric Co., Ltd.'s Innovation Score?

Haihong Electric Co., Ltd. has an Innovation Score of 28.5 out of 100 (27th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Haihong Electric Co., Ltd. focus on?

Haihong Electric Co., Ltd.'s top technology area is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties) with 15 patents, ranking #113 of 1,360 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Is Haihong Electric Co., Ltd.'s patent grant rate increasing or decreasing?

Haihong Electric Co., Ltd.'s recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Haihong Electric Co., Ltd.'s patents?

Haihong Electric Co., Ltd.'s patents average 4.9 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 Haihong Electric 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

Haihong Electric Co., Ltd.

USPTO PatentsView assignee record - 15 granted patents across 4 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: H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Haihong ranks #18,696 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 4 technology areas.

#18,696
of 49,997 US assignees by volume: 27th percentile
by Innovation Score (28.5/100): 4.9
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R18696 · Foreign Corporation #18,696 · 15 grants

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

GRANTS-MICRO 15 grants
MID-PACK #18,696/49,997
PHOTO-FINISH Guangdong Haixing…
CPC-NARROW H01F · 4 areas
INNOV-THIN 28.5/100
CLAIMS-SPARSE 4.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Guangdong Haixing Plastic & Rubber 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 Haihong’s 28.5 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 9.6 pts (34%) Velocity 8.9 pts (31%) Breadth 7.1 pts (25%) Claim depth 2.9 pts (10%)

Qualcomm Incorporated · highest

85
Haihong Electric · this assignee

28
3D Lighting… · lowest

7

What this shows Haihong's Innovation Score is 28.5/100 (27th 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 Haihong?

Each dot is one of Haihong’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). Haihong’s own 4.9 claims/patent is ABOVE the 1.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Haihong's grants concentrate

Haihong Electric Co., Ltd. is a focused PatentsView assignee: 4 CPC subclasses with 100% of grants classified under H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2017. By volume, Haihong sits between Guangdong Haixing Plastic & Rubber Co., Ltd. and Head-direct (KUNSHAN) Company Limited.

Haihong's three-year grant acceleration

Haihong Electric Co., Ltd. shows 4 grants in 2022–2024 against only 3 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.

Guangdong Haixing…

15
Guehring OHG

15
Gymshark

15
H-P Products

15
Hain YO Enterpris…

15
Hangzhou Everich…

15
Hansol Chemical

15
Head-direct (Kuns…

15
Haihong Electric ◀

15

What this shows Haihong holds 15 patents at rank #18,694, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Haihong

By rank, the assignees closest to #18,694 in granted patent volume.

Leaders in H01F (Magnets)

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

Haihong's Innovation Score vs. every tracked assignee

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

28 27th percentile higher than 27% 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

Haihong Electric Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	13.3%
2017	1	6.7%
2018	2	13.3%
2019	1	6.7%
2020	1	6.7%
2021	1	6.7%
2022	2	13.3%
2024	2	13.3%
2025partial year	3	20.0%

Which technologies does Haihong Electric Co., Ltd. patent most?

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 15

Y02A - Technologies FOR Adaptation TO Climate Change 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

D21H - Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherwise Provided FOR 1

Top 4 of 4 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

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

Haihong Electric Co., Ltd.'s lead technology class is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties), 100% of its portfolio - see every assignee active in that class. Explore H01F
Ranked #18,696 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Haihong Electric Co., Ltd. against Guangdong Haixing Plastic & Rubber Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.5/100 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.