Where does Ningbo Yamao Optoelectronics Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ningbo Yamao Optoelectronics Co., Ltd. ranks #24,891 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 Yamao Optoelectronics Co., Ltd. hold?

Ningbo Yamao Optoelectronics Co., Ltd. holds 11 US utility patents granted between 2017 and 2020, spanning 11 technology areas.

What is Ningbo Yamao Optoelectronics Co., Ltd.'s Innovation Score?

Ningbo Yamao Optoelectronics Co., Ltd. has an Innovation Score of 24.9 out of 100 (16th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Ningbo Yamao Optoelectronics Co., Ltd.'s patent grant rate increasing or decreasing?

Ningbo Yamao Optoelectronics Co., Ltd.'s recent grant velocity is -90% 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 Ningbo Yamao Optoelectronics Co., Ltd.'s patents?

Ningbo Yamao Optoelectronics Co., Ltd.'s patents average 7.7 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 Yamao Optoelectronics 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 Yamao Optoelectronics Co., Ltd.

Q: What technology areas does Ningbo Yamao Optoelectronics Co., Ltd. focus on?

Ningbo Yamao Optoelectronics Co., Ltd.'s top technology area is F21V (Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR) with 8 patents, ranking #333 of 1,842 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

USPTO PatentsView assignee record - 11 granted patents across 11 technology areas, recorded in grant years 2017–2020. 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: F21V (Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Ningbo ranks #24,891 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 11 technology areas.

#24,891
of 49,997 US assignees by volume: 16th percentile
by Innovation Score (24.9/100): 7.7
avg claims per patent: -90%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R24891 · Foreign Corporation #24,891 · 11 grants

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

GRANTS-MICRO 11 grants
MID-PACK #24,891/49,997
PHOTO-FINISH Nikon Research OF…
CPC-FOCUS F21V · 11 areas
INNOV-THIN 24.9/100
CLAIMS-SPARSE 7.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -90% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nikon Research Corporation OF America (±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 24.9 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 8.6 pts (35%) Velocity 0.0 pts (0%) Breadth 11.7 pts (47%) Claim depth 4.6 pts (18%)

Qualcomm Incorporated · highest

85
Ningbo Yamao… · this assignee

25
3D Lighting… · lowest

7

What this shows Ningbo's Innovation Score is 24.9/100 (16th 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 7.7 claims/patent is at or below the 10.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Ningbo's grants concentrate

Ningbo Yamao Optoelectronics Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 72.7% of grants classified under F21V (Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR). Peak complete grant year is 2019 (5 grants) versus a trough of 1 in 2017. By volume, Ningbo sits between Nikon Research Corporation OF America and Nippon Yusen Kabushiki Kaisha.

Nikon Research OF…

11
Niles Werkzeugmas…

11
Ningbo Flying-hor…

11
Ningbo Royalux Li…

11
Nippi

11
Nippon A&L

11
Nippon Medical Sc…

11
Nippon Yusen

11
Ningbo Yamao Opto… ◀

11

What this shows Ningbo holds 11 patents at rank #24,858, 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 #24,858 in granted patent volume.

Leaders in F21V (Functional Features OR Details OF Lighting Devices OR Sys…)

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)

25 16th percentile higher than 16% 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 · 2017–2020

Grants by year

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

View data table

Ningbo Yamao Optoelectronics Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	9.1%
2018	4	36.4%
2019	5	45.5%
2020	1	9.1%

Which technologies does Ningbo Yamao Optoelectronics Co., Ltd. patent most?

F21V - Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR 8

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 5

F21K - Non-electric Light Sources Using LUMINESCENCE; Light Sources Using ELECTROCHEMILUMINESCENCE; Light Sources Using Charges OF Combustible MATERIAL; Light Sources Using Semiconductor Devices AS Light-generating ELEMENTS; Light Sources NOT Otherwise Provided FOR 4

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 2

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

H04N - Pictorial Communication, e.g. Television 1

G08B - Signalling OR Calling SYSTEMS; Order TELEGRAPHS; Alarm Systems 1

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 1

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 1

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

Top 11 of 11 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 Yamao Optoelectronics Co., Ltd.'s patent record in context - here's where to go next.

Ningbo Yamao Optoelectronics Co., Ltd.'s lead technology class is F21V (Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR), 72.7% of its portfolio - see every assignee active in that class. Explore F21V
Ranked #24,891 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Ningbo Yamao Optoelectronics Co., Ltd. against Nikon Research Corporation OF America, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.9/100 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.