Where does Hengdian Group Tospo Lighting Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hengdian Group Tospo Lighting Co., Ltd. ranks #28,964 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 Hengdian Group Tospo Lighting Co., Ltd. hold?

Hengdian Group Tospo Lighting Co., Ltd. holds 9 US utility patents granted between 2018 and 2025, spanning 7 technology areas.

What is Hengdian Group Tospo Lighting Co., Ltd.'s Innovation Score?

Hengdian Group Tospo Lighting Co., Ltd. has an Innovation Score of 34.1 out of 100 (47th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hengdian Group Tospo Lighting Co., Ltd.'s patent grant rate increasing or decreasing?

Hengdian Group Tospo Lighting Co., Ltd.'s recent grant velocity is +33% 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 Hengdian Group Tospo Lighting Co., Ltd.'s patents?

Hengdian Group Tospo Lighting Co., Ltd.'s patents average 5.8 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 Hengdian Group Tospo 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

Hengdian Group Tospo Lighting Co., Ltd.

Q: What technology areas does Hengdian Group Tospo Lighting Co., Ltd. focus on?

Hengdian Group Tospo 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 5 patents, ranking #491 of 1,842 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 9 granted patents across 7 technology areas, recorded in grant years 2018–2025. 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, Hengdian ranks #28,964 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 7 technology areas.

#28,964
of 49,997 US assignees by volume: 47th percentile
by Innovation Score (34.1/100): 5.8
avg claims per patent: +33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R28964 · Foreign Corporation #28,964 · 9 grants

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

GRANTS-MICRO 9 grants
MID-PACK #28,964/49,997
PHOTO-FINISH Heimann Sensor
CPC-NARROW F21V · 7 areas
INNOV-THIN 34.1/100
CLAIMS-SPARSE 5.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +33% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Heimann Sensor GmbH (±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 Hengdian’s 34.1 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 8.0 pts (23%) Velocity 13.3 pts (39%) Breadth 9.4 pts (27%) Claim depth 3.5 pts (10%)

Qualcomm Incorporated · highest

85
Hengdian Group… · this assignee

34
3D Lighting… · lowest

7

What this shows Hengdian's Innovation Score is 34.1/100 (47th 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 Hengdian?

Each dot is one of Hengdian’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). Hengdian’s own 5.8 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.

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

Where Hengdian's grants concentrate

Hengdian Group Tospo Lighting Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 55.6% 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 (3 grants) versus a trough of 1 in 2018. By volume, Hengdian sits between Heimann Sensor GmbH and Hikma Pharmaceuticals LLC.

Hengdian's three-year grant acceleration

Hengdian Group Tospo Lighting Co., Ltd. shows 4 grants in 2022–2024 against only 2 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.

Heimann Sensor

9
Helius Medical

9
Helix Nanotechnol…

9
Helix Opco

9
Herrmans OY AB

9
Hettich Franke &…

9
Hiviz

9
Hikma Pharmaceuti…

9
Hengdian Group To… ◀

9

What this shows Hengdian holds 9 patents at rank #28,986, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hengdian

By rank, the assignees closest to #28,986 in granted patent volume.

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

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

Hengdian's Innovation Score vs. every tracked assignee

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

34 47th percentile higher than 47% 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 · 2018–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Hengdian Group Tospo Lighting Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	11.1%
2019	2	22.2%
2023	3	33.3%
2024	1	11.1%
2025partial year	2	22.2%

Which technologies does Hengdian Group Tospo 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 5

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 4

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 4

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 3

F21W - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO Uses OR Applications OF Lighting Devices OR Systems 1

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

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

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

Hengdian Group Tospo Lighting Co., Ltd.'s patent record in context - here's where to go next.

Hengdian Group Tospo 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), 55.6% of its portfolio - see every assignee active in that class. Explore F21V
Ranked #28,964 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hengdian Group Tospo Lighting Co., Ltd. against Heimann Sensor GmbH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.1/100 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.