Where does Ningbo Diroan Auto Accessories Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ningbo Diroan Auto Accessories Co., Ltd. ranks #41,966 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 Ningbo Diroan Auto Accessories Co., Ltd. hold?

Ningbo Diroan Auto Accessories Co., Ltd. holds 6 US utility patents granted between 2019 and 2024, spanning 3 technology areas.

What is Ningbo Diroan Auto Accessories Co., Ltd.'s Innovation Score?

Ningbo Diroan Auto Accessories Co., Ltd. has an Innovation Score of 24.0 out of 100 (13th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Ningbo Diroan Auto Accessories Co., Ltd.'s patent grant rate increasing or decreasing?

Ningbo Diroan Auto Accessories 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 Ningbo Diroan Auto Accessories Co., Ltd.'s patents?

Ningbo Diroan Auto Accessories Co., Ltd.'s patents average 13.0 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 Ningbo Diroan Auto Accessories 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

Ningbo Diroan Auto Accessories Co., Ltd.

Q: What technology areas does Ningbo Diroan Auto Accessories Co., Ltd. focus on?

Ningbo Diroan Auto Accessories Co., Ltd.'s top technology area is B60J (Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles) with 5 patents, ranking #116 of 418 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 3 technology areas, recorded in grant years 2019–2024. 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: B60J (Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Ningbo ranks #41,966 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 3 technology areas.

#41,966
of 49,997 US assignees by volume: 13th percentile
by Innovation Score (24.0/100): 13.0
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R41966 · Foreign Corporation #41,966 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #41,966/49,997
PHOTO-FINISH Nilfisk-advance A/S
CPC-NARROW B60J · 3 areas
INNOV-THIN 24.0/100
CLAIMS-RICH 13.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nilfisk-advance A/S (±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 Ningbo’s 24.0 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 6.7 pts (28%) Velocity 3.3 pts (14%) Breadth 6.1 pts (26%) Claim depth 7.8 pts (33%)

Qualcomm Incorporated · highest

85
Ningbo Diroan Auto… · this assignee

24
3D Lighting… · lowest

7

What this shows Ningbo's Innovation Score is 24.0/100 (13th 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 Ningbo?

Each dot is one of Ningbo’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). Ningbo’s own 13.0 claims/patent is ABOVE the 3.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Ningbo's grants concentrate

Ningbo Diroan Auto Accessories Co., Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 83.3% of grants classified under B60J (Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles). Peak complete grant year is 2019 (3 grants) versus a trough of 1 in 2021. By volume, Ningbo sits between Nilfisk, Inc. and Ningbo Haode PET Products Co., Ltd..

Ningbo's three-year grant acceleration

Ningbo Diroan Auto Accessories Co., Ltd. shows 2 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.

Nilfisk

6
Nilfisk-advance A…

6
Ningbo Chefshere…

6
Ningbo Dayang Tec…

6
Ningbo Fujia Indu…

6
Ningbo Future Hou…

6
Ningbo Gaoli Tech…

6
Ningbo Haode PET…

6
Ningbo Diroan Aut… ◀

6

What this shows Ningbo holds 6 patents at rank #41,869, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Ningbo

By rank, the assignees closest to #41,869 in granted patent volume.

Leaders in B60J (Windows)

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

Ningbo's Innovation Score vs. every tracked assignee

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

24 13th percentile higher than 13% 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 · 2019–2024

Grants by year

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

View data table

Ningbo Diroan Auto Accessories Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	3	50.0%
2021	1	16.7%
2022	1	16.7%
2024	1	16.7%

Which technologies does Ningbo Diroan Auto Accessories Co., Ltd. patent most?

B60J - Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles 5

B60P - Vehicles Adapted FOR Load Transportation OR TO Transport, TO Carry, OR TO Comprise Special Loads OR Objects 3

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 1

Top 3 of 3 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

Ningbo Diroan Auto Accessories Co., Ltd.'s patent record in context - here's where to go next.

Ningbo Diroan Auto Accessories Co., Ltd.'s lead technology class is B60J (Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles), 83.3% of its portfolio - see every assignee active in that class. Explore B60J
Ranked #41,966 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Ningbo Diroan Auto Accessories Co., Ltd. against Nilfisk, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.0/100 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.