PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Dongshin Polymer Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 3 technology areas, active 2016–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: E04F (FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS).

Explore the portfolio See the ranking
5
Total patents granted
3
CPC technology areas
9.2
Avg claims per patent
+50%
5-year filing velocity

The verdict

Dongshin holds 5 US patents across 3 technology areas, rank #46,142 of 50,000 tracked assignees.

#46,142
of 50,000 US assignees by volume
Top 63%
by Innovation Score (31.2/100)
9.2
avg claims per patent
+50%
filing velocity, last 5 yrs

Portfolio overview

Dongshin Polymer Co., Ltd. has been granted 5 US utility patents between 2016 and 2024, placing Dongshin Polymer Co., Ltd. at rank #46,142 across all assignees tracked by PlainPatent. This portfolio spans 3 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.2 claims per patent with primary concentration in E04F (FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS). As a Foreign Corporation, Dongshin Polymer Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Dongshin sits between Dongguan Yixin Magnetic DISK Co., Ltd (5 patents, rank #46,138) and Doosan Solus Co., Ltd. (5 patents, rank #46,146) - the closest US assignees by grant volume. The composite Innovation Score of 31.2/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 3 grants, compared with 2 in the 2015–2019 window, a +50% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Dongshin Polymer Co., Ltd.'s 9.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while specialization in 3 subclasses reflects a tightly scoped invention area. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Dongshin Polymer Co., Ltd. against peers pursuing similar technology classes.

Who files at Dongshin's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Dongshin holds 5 patents at rank #46,142, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Dongshin

By rank, the assignees closest to #46,142 in granted patent volume.

Leaders in E04F (Finishing WORK ON Buildings)

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

Dongshin's Innovation Score vs. every tracked assignee

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

31 Top 63% higher than 37% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). This entry sits in this band. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

0.511.522.5 2016202120232024 1
USPTO utility patent grants by year · 2016–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table
Dongshin Polymer Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2016 2 40.0%
2021 1 20.0%
2023 1 20.0%
2024 1 20.0%

Which technologies does Dongshin Polymer Co., Ltd. patent most?

Top 3 of 3 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Specialized
Claim Depth Simple
Velocity Accelerating

Where it ranks

Overall rank by patents

#46,142

Across all tracked assignees

Innovation Score

31.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Dongshin Polymer Co., Ltd. hold?
Dongshin Polymer Co., Ltd. holds 5 US granted patents filed between 2016 and 2024, spanning 3 technology areas.
What is Dongshin Polymer Co., Ltd.'s Innovation Score?
Dongshin Polymer Co., Ltd. has an Innovation Score of 31.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Dongshin Polymer Co., Ltd. focus on?
Dongshin Polymer Co., Ltd.'s top technology area is E04F (FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS) with 3 patents. The company has filed patents in 3 CPC subclasses total.
Is Dongshin Polymer Co., Ltd.'s patent filing rate increasing or decreasing?
Dongshin Polymer Co., Ltd.'s recent filing velocity is +50% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Dongshin Polymer Co., Ltd.'s patents?
Dongshin Polymer Co., Ltd.'s patents average 9.2 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Dongshin Polymer 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.

How to use this portfolio

Dongshin's 5 grants land it in the top 63% by Innovation Score, but volume alone doesn't tell you where the strength sits.

  • Read that count against the largest US assignees before treating it as dominance - Dongshin ranks #46,142 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in E04F - see who else leads that technology area. E04F leaders
  • Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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

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.