Where does Xiamen Longstar Lighting Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Xiamen Longstar Lighting Co., Ltd. ranks #9,676 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 Xiamen Longstar Lighting Co., Ltd. hold?

Xiamen Longstar Lighting Co., Ltd. holds 33 US utility patents granted between 2022 and 2025, spanning 7 technology areas.

What is Xiamen Longstar Lighting Co., Ltd.'s Innovation Score?

Xiamen Longstar Lighting Co., Ltd. has an Innovation Score of 44.5 out of 100 (top 25% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Xiamen Longstar Lighting Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Xiamen Longstar Lighting Co., Ltd..

What does claim depth mean for Xiamen Longstar Lighting Co., Ltd.'s patents?

Xiamen Longstar Lighting 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 Xiamen Longstar Lighting 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

Xiamen Longstar Lighting Co., Ltd.

Q: What technology areas does Xiamen Longstar Lighting Co., Ltd. focus on?

Xiamen Longstar Lighting 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 11 patents, ranking #244 of 1,842 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 33 granted patents across 7 technology areas, recorded in grant years 2022–2025. 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: 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, Xiamen ranks #9,676 of 49,997 tracked US assignees by granted-patent volume, with 33 patents across 7 technology areas.

#9,676
of 49,997 US assignees by volume: Top 25%
by Innovation Score (44.5/100): 4.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R9676 · Foreign Corporation #9,676 · 33 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-SMALL 33 grants
UPPER-Q #9,676/49,997
PHOTO-FINISH Walker Digital…
CPC-NARROW F21V · 7 areas
INNOV-PAR 44.5/100
CLAIMS-SPARSE 4.9 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2025 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Walker Digital Table Systems, LLC (±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 Xiamen’s 44.5 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 12.2 pts (27%) Velocity 20.0 pts (45%) Breadth 9.4 pts (21%) Claim depth 2.9 pts (7%)

Qualcomm Incorporated · highest

85
Santa Clara University · near

44
The Henry Group · near

44
Daqri · near

44
KX · near

44
Xiamen Longstar… · this assignee

44
3D Lighting… · lowest

7

What this shows Xiamen's Innovation Score is 44.5/100 (top 25% 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 Xiamen?

Each dot is one of Xiamen’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). Xiamen’s own 4.9 claims/patent is at or below the 14.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Xiamen's grants concentrate

Xiamen Longstar Lighting Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 33.3% 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 2023 (14 grants) versus a trough of 7 in 2024. By volume, Xiamen sits between Walker Digital Table Systems, LLC and Zoosk, Inc..

Xiamen's three-year grant acceleration

Xiamen Longstar Lighting Co., Ltd. shows 30 grants in 2022–2024 against only 0 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.

Walker Digital Ta…

33
Watt Fuel Cell

33
Wi-charge

33
Xiamen Baby Prett…

33
ZEN Design Soluti…

33
Zensun (Shanghai)…

33
Zixcorp Systems

33
Zoosk

33
Xiamen Longstar L… ◀

33

What this shows Xiamen holds 33 patents at rank #9,674, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Xiamen

By rank, the assignees closest to #9,674 in granted patent volume.

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

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Xiamen, neither rank-band nor same-CPC leaders (those blocks stay above). In F21V (Functional Features OR Details OF Lighting Devices OR Sys…), Xiamen ranks #244 of 1,842 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (44 here).

KX Technologies LLC 44 Daqri, LLC 44 The Henry Group 44 Santa Clara University 44

Xiamen's Innovation Score vs. every tracked assignee

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

44 Top 25% higher than 75% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Xiamen Longstar Lighting Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	9	27.3%
2023	14	42.4%
2024	7	21.2%
2025partial year	3	9.1%

Which technologies does Xiamen Longstar Lighting 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 11

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 10

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 8

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 3

F21W - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO Uses OR Applications OF Lighting Devices OR Systems 3

G03B - Apparatus OR Arrangements FOR Taking Photographs OR FOR Projecting OR Viewing THEM; Apparatus OR Arrangements Employing Analogous Techniques Using Waves Other Than Optical WAVES; Accessories Therefor 2

Top 7 of 7 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

Xiamen Longstar Lighting Co., Ltd.'s patent record in context - here's where to go next.

Xiamen Longstar Lighting 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), 33.3% of its portfolio - see every assignee active in that class. Explore F21V
Ranked #9,676 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Xiamen Longstar Lighting Co., Ltd. against Walker Digital Table Systems, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.5/100 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.