USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Ningbo Yamao Optoelectronics Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 11 technology areas, active 2017–2020. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. 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 byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

7.7

Avg claims per patent

-90%

5-year filing velocity

The verdict

Ningbo holds 11 US patents across 11 technology areas, rank #24,858 of 50,000 tracked assignees.

#24,858
of 50,000 US assignees by volume: Top 84%
by Innovation Score (24.9/100): 7.7
avg claims per patent: -90%
filing velocity, last 5 yrs

Portfolio overview

Ningbo Yamao Optoelectronics Co., Ltd. has been granted 11 US utility patents between 2017 and 2020, placing Ningbo Yamao Optoelectronics Co., Ltd. at rank #24,858 across all assignees tracked by PlainPatent. This portfolio spans 11 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.7 claims per patent with primary concentration in F21V (FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR). As a Foreign Corporation, Ningbo Yamao Optoelectronics Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Ningbo sits between Nikon Research Corporation OF America (11 patents, rank #24,854) and Nippon Yusen Kabushiki Kaisha (11 patents, rank #24,862) - the closest US assignees by grant volume. The composite Innovation Score of 24.9/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 1 grants, compared with 10 in the 2015–2019 window, a -90% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Ningbo Yamao Optoelectronics Co., Ltd.'s 7.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 11 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Ningbo Yamao Optoelectronics Co., Ltd. against peers pursuing similar technology classes.

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.

Ningbo's Innovation Score vs. every tracked assignee

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

25 Top 84% higher than 16% of 50,000 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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#24,858

Across all tracked assignees

Innovation Score

24.9 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Ningbo Yamao Optoelectronics Co., Ltd. hold?

Ningbo Yamao Optoelectronics Co., Ltd. holds 11 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 11 CPC subclasses total.

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

Ningbo Yamao Optoelectronics Co., Ltd.'s recent filing velocity is -90% compared to the prior five-year period. Filing 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Ningbo's 11 grants land it in the top 84% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Ningbo ranks #24,858 of 50,000. Top 50 holders
Most of this portfolio concentrates in F21V - see who else leads that technology area. F21V leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team

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.