Where does Dong-a Teaching Materials Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dong-a Teaching Materials Co., Ltd. ranks #46,219 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 Dong-a Teaching Materials Co., Ltd. hold?

Dong-a Teaching Materials Co., Ltd. holds 5 US utility patents granted between 2015 and 2018, spanning 7 technology areas.

What is Dong-a Teaching Materials Co., Ltd.'s Innovation Score?

Dong-a Teaching Materials Co., Ltd. has an Innovation Score of 18.1 out of 100 (5th 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 Dong-a Teaching Materials Co., Ltd. focus on?

Dong-a Teaching Materials Co., Ltd.'s top technology area is B44C (Producing Decorative Effects ; MOSAICS; Tarsia Work ; Paperhanging) with 2 patents, ranking #78 of 205 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Dong-a Teaching Materials Co., Ltd.'s patent grant rate increasing or decreasing?

Dong-a Teaching Materials Co., Ltd.'s recent grant velocity is -100% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Dong-a Teaching Materials Co., Ltd.'s patents?

Dong-a Teaching Materials Co., Ltd.'s patents average 4.2 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 Dong-a Teaching Materials 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

Dong-a Teaching Materials Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 7 technology areas, recorded in grant years 2015–2018. 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: B44C (Producing Decorative Effects ; MOSAICS; Tarsia Work ; Paperhanging).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dong-a ranks #46,219 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 7 technology areas.

#46,219
of 49,997 US assignees by volume: 5th percentile
by Innovation Score (18.1/100): 4.2
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R46219 · Foreign Corporation #46,219 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #46,219/49,997
PHOTO-FINISH Dominant Opto SDN BHD
CPC-NARROW B44C · 7 areas
INNOV-LOW 18.1/100
CLAIMS-SPARSE 4.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Dominant Opto Technologies SDN BHD. (±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 Dong-a’s 18.1 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 6.2 pts (34%) Velocity 0.0 pts (0%) Breadth 9.4 pts (52%) Claim depth 2.5 pts (14%)

Qualcomm Incorporated · highest

85
Dong-a Teaching… · this assignee

18
3D Lighting… · lowest

7

What this shows Dong-a's Innovation Score is 18.1/100 (5th 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 Dong-a?

Each dot is one of Dong-a’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). Dong-a’s own 4.2 claims/patent is at or below the 11.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dong-a's grants concentrate

Dong-a Teaching Materials Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 40% of grants classified under B44C (Producing Decorative Effects ; MOSAICS; Tarsia Work ; Paperhanging). Peak complete grant year is 2015 (3 grants) versus a trough of 1 in 2016. By volume, Dong-a sits between Dominant Opto Technologies SDN BHD. and Dongguan DSP Technology Co., Ltd..

Dominant Opto SDN…

5
Donesta Bioscienc…

5
Dong Yang INK

5
Dong-a Flexible M…

5
Dongfang Electric

5
Dongguan Boyi Fur…

5
Dongguan City Min…

5
Dongguan DSP Tech…

5
Dong-a Teaching M… ◀

5

What this shows Dong-a holds 5 patents at rank #46,121, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dong-a

By rank, the assignees closest to #46,121 in granted patent volume.

Leaders in B44C (Producing Decorative Effects)

Other assignees with the most granted patents in Dong-a's primary technology class.

Dong-a's Innovation Score vs. every tracked assignee

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

18 5th percentile higher than 5% 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 · 2015–2018

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Dong-a Teaching Materials Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	60.0%
2016	1	20.0%
2018	1	20.0%

Which technologies does Dong-a Teaching Materials Co., Ltd. patent most?

B44C - Producing Decorative Effects ; MOSAICS; Tarsia Work ; Paperhanging 2

C08L - Compositions OF Macromolecular Compounds 1

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 1

A63H - Toys, e.g. Tops, Dolls, Hoops OR Building Blocks 1

C11D - Detergent COMPOSITIONS; USE OF Single Substances AS DETERGENTS; Soap OR SOAP-MAKING; Resin SOAPS; Recovery OF Glycerol 1

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

Y10T - Technical Subjects Covered BY Former US Classification 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

Dong-a Teaching Materials Co., Ltd.'s patent record in context - here's where to go next.

Dong-a Teaching Materials Co., Ltd.'s lead technology class is B44C (Producing Decorative Effects ; MOSAICS; Tarsia Work ; Paperhanging), 40% of its portfolio - see every assignee active in that class. Explore B44C
Ranked #46,219 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dong-a Teaching Materials Co., Ltd. against Dominant Opto Technologies SDN BHD., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 18.1/100 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.