Where does Dongguan Shichang Metals Factory Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dongguan Shichang Metals Factory Ltd. ranks #8,011 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 Dongguan Shichang Metals Factory Ltd. hold?

Dongguan Shichang Metals Factory Ltd. holds 40 US utility patents granted between 2018 and 2025, spanning 15 technology areas.

What is Dongguan Shichang Metals Factory Ltd.'s Innovation Score?

Dongguan Shichang Metals Factory Ltd. has an Innovation Score of 33.3 out of 100 (44th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dongguan Shichang Metals Factory Ltd. focus on?

Dongguan Shichang Metals Factory Ltd.'s top technology area is A47B (TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture) with 12 patents, ranking #57 of 990 assignees active in that subclass. Grants appear in 15 CPC subclasses total.

Is Dongguan Shichang Metals Factory Ltd.'s patent grant rate increasing or decreasing?

Dongguan Shichang Metals Factory Ltd.'s recent grant velocity is +1033% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Dongguan Shichang Metals Factory Ltd.'s patents?

Dongguan Shichang Metals Factory Ltd.'s patents average 6.6 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 Dongguan Shichang Metals Factory 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

Dongguan Shichang Metals Factory Ltd.

USPTO PatentsView assignee record - 40 granted patents across 15 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: A47B (TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Dongguan ranks #8,011 of 49,997 tracked US assignees by granted-patent volume, with 40 patents across 15 technology areas.

#8,011
of 49,997 US assignees by volume: 44th percentile
by Innovation Score (33.3/100): 6.6
avg claims per patent: +1033%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8011 · Foreign Corporation #8,011 · 40 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 40 grants
UPPER-Q #8,011/49,997
PHOTO-FINISH Defond Electech
CPC-FOCUS A47B · 15 areas
INNOV-THIN 33.3/100
CLAIMS-SPARSE 6.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +1033% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Defond Electech Co., Ltd. (±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 Dongguan’s 33.3 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 12.8 pts (38%) Velocity 2.8 pts (8%) Breadth 13.7 pts (41%) Claim depth 4.0 pts (12%)

Qualcomm Incorporated · highest

85
Akatsuki · near

33
Dongguan Shichang… · this assignee

33
DUO Security · near

33
Mitsubishi Aluminum · near

33
Rmit University · near

33
3D Lighting… · lowest

7

What this shows Dongguan's Innovation Score is 33.3/100 (44th 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 Dongguan?

Each dot is one of Dongguan’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). Dongguan’s own 6.6 claims/patent is at or below the 17.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dongguan's grants concentrate

Dongguan Shichang Metals Factory Ltd. is a focused PatentsView assignee: 15 CPC subclasses with 30% of grants classified under A47B (TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture). Peak complete grant year is 2021 (15 grants) versus a trough of 1 in 2024. By volume, Dongguan sits between Doyo Engineering Co., Ltd. and Endoevolution, LLC.

Dongguan's three-year grant acceleration

From 2019–2021 to 2022–2024, Dongguan Shichang Metals Factory Ltd. moved from 24 to 10 grants (0.42x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Doyo Engineering

40
DSG Technology Ho…

40
Defond Electech

40
Dialogic

40
E &J Gallo Winery

40
Echostar Internat…

40
Elucid Bioimaging

40
Endoevolution

40
Dongguan Shichang… ◀

40

What this shows Dongguan holds 40 patents at rank #8,013, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dongguan

By rank, the assignees closest to #8,013 in granted patent volume.

Leaders in A47B (Tables)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Dongguan, neither rank-band nor same-CPC leaders (those blocks stay above). In A47B (Tables), Dongguan ranks #57 of 990 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (33 here).

DUO Security, Inc. 33 Mitsubishi Aluminum Co., Ltd. 33 Akatsuki Inc. 33 Rmit University 33

Dongguan's Innovation Score vs. every tracked assignee

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

33 44th percentile higher than 44% 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

Dongguan Shichang Metals Factory Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	3	7.5%
2020	9	22.5%
2021	15	37.5%
2022	4	10.0%
2023	5	12.5%
2024	1	2.5%
2025partial year	3	7.5%

Which technologies does Dongguan Shichang Metals Factory Ltd. patent most?

A47B - TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture 12

A47C - CHAIRS; SOFAS; Beds 8

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 6

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 6

E04C - Structural ELEMENTS; Building Materials 4

Y10T - Technical Subjects Covered BY Former US Classification 4

A47F - Special Furniture, Fittings, OR Accessories FOR Shops, Storehouses, Bars, Restaurants OR THE LIKE; Paying Counters 4

B62B - Hand-propelled Vehicles, e.g. Hand Carts OR PERAMBULATORS; Sledges 4

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 3

D10B - Indexing Scheme Associated With Sublasses OF Section D, Relating TO Textiles 2

D03D - Woven FABRICS; Methods OF WEAVING; Looms 2

D06P - Dyeing OR Printing TEXTILES; Dyeing Leather, Furs OR Solid Macromolecular Substances IN ANY Form 1

D06N - Wall, Floor, OR Like Covering Materials, e.g. Linoleum, Oilcloth, Artificial Leather, Roofing Felt, Consisting OF A Fibrous WEB Coated With A Layer OF Macromolecular MATERIAL; Flexible Sheet Material NOT Otherwise Provided FOR 1

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

A61G - Transport, Personal Conveyances, OR Accommodation Specially Adapted FOR Patients OR Disabled Persons ; Operating Tables OR CHAIRS; Chairs FOR DENTISTRY; Funeral Devices 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

Dongguan Shichang Metals Factory Ltd.'s patent record in context - here's where to go next.

Dongguan Shichang Metals Factory Ltd.'s lead technology class is A47B (TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture), 30% of its portfolio - see every assignee active in that class. Explore A47B
Ranked #8,011 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dongguan Shichang Metals Factory Ltd. against Doyo Engineering Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.3/100 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.