Where does Sung Chang Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sung Chang Co., Ltd ranks #43,390 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 Sung Chang Co., Ltd hold?

Sung Chang Co., Ltd holds 6 US utility patents granted between 2021 and 2025, spanning 15 technology areas.

What is Sung Chang Co., Ltd's Innovation Score?

Sung Chang Co., Ltd has an Innovation Score of 44.0 out of 100 (top 27% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sung Chang Co., Ltd focus on?

Sung Chang Co., Ltd's top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 5 patents, ranking #2,175 of 5,963 assignees active in that subclass. Grants appear in 15 CPC subclasses total.

Is Sung Chang Co., Ltd's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Sung Chang Co., Ltd.

What does claim depth mean for Sung Chang Co., Ltd's patents?

Sung Chang Co., Ltd's patents average 6.0 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 Sung Chang 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

Sung Chang Co., Ltd

USPTO PatentsView assignee record - 6 granted patents across 15 technology areas, recorded in grant years 2021–2025. 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: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sung ranks #43,390 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 15 technology areas.

#43,390
of 49,997 US assignees by volume: Top 27%
by Innovation Score (44.0/100): 6.0
avg claims per patent

USPTO PatentsView assignee plate

Corpus R43390 · Foreign Corporation #43,390 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #43,390/49,997
PHOTO-FINISH SUN Race Sturmey-arc…
CPC-FOCUS Y02E · 15 areas
INNOV-PAR 44.0/100
CLAIMS-SPARSE 6.0 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2025 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: SUN Race Sturmey-archer Inc. (±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 Sung’s 44.0 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 (15%) Velocity 20.0 pts (45%) Breadth 13.7 pts (31%) Claim depth 3.6 pts (8%)

Qualcomm Incorporated · highest

85
Sung Chang · this assignee

44
3D Lighting… · lowest

7

What this shows Sung's Innovation Score is 44.0/100 (top 27% 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 Sung?

Each dot is one of Sung’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). Sung’s own 6.0 claims/patent is at or below the 9.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Sung's grants concentrate

Sung Chang Co., Ltd is a focused PatentsView assignee: 15 CPC subclasses with 83.3% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2022 (3 grants) versus a trough of 1 in 2021. By volume, Sung sits between SUN Race Sturmey-archer Inc. and Sunsight Holdings, LLC.

Sung's three-year grant acceleration

Sung Chang Co., Ltd shows 4 grants in 2022–2024 against only 1 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.

SUN Race Sturmey-…

6
Sunallomer

6
Sunam

6
Suncorporation

6
Sung Jung Minute…

6
Sunia PTE

6
Sunpine AB

6
Sunsight Holdings

6
Sung Chang ◀

6

What this shows Sung holds 6 patents at rank #43,032, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sung

By rank, the assignees closest to #43,032 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

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

Sung's Innovation Score vs. every tracked assignee

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

44 Top 27% higher than 73% 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 · 2021–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Sung Chang Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	1	16.7%
2022	3	50.0%
2024	1	16.7%
2025partial year	1	16.7%

Which technologies does Sung Chang Co., Ltd patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 5

H02S - Generation OF Electric Power BY Conversion OF Infrared Radiation, Visible Light OR Ultraviolet Light, e.g. Using Photovoltaic [PV] Modules 3

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 2

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 2

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 1

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 1

F24S - Solar Heat COLLECTORS; Solar Heat Systems 1

G06F - Electric Digital Data Processing 1

Y04S - Systems Integrating Technologies Related TO Power Network Operation, Communication OR Information Technologies FOR Improving THE Electrical Power Generation, Transmission, Distribution, Management OR Usage, i.e. Smart Grids 1

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 1

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

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

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

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 1

H04W - Wireless Communication Networks 1

Top 15 of 15 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

Sung Chang Co., Ltd's patent record in context - here's where to go next.

Sung Chang Co., Ltd's lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 83.3% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #43,390 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sung Chang Co., Ltd against SUN Race Sturmey-archer Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.0/100 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.