PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Daewoo Shipbuilding & Marine Engineering Co., Ltd.

USPTO PatentsView assignee record - 72 granted patents across 39 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B63B (SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING).

Explore the portfolio See the ranking
72
Total patents granted
39
CPC technology areas
11.8
Avg claims per patent
-43%
5-year filing velocity

The verdict

Daewoo holds 72 US patents across 39 technology areas, rank #4,812 of 50,000 tracked assignees.

#4,812
of 50,000 US assignees by volume
Top 13%
by Innovation Score (50.3/100)
11.8
avg claims per patent
-43%
filing velocity, last 5 yrs

Portfolio overview

Daewoo Shipbuilding & Marine Engineering Co., Ltd. has been granted 72 US utility patents between 2015 and 2024, placing Daewoo Shipbuilding & Marine Engineering Co., Ltd. at rank #4,812 across all assignees tracked by PlainPatent. This portfolio spans 39 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.8 claims per patent with primary concentration in B63B (SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING). As a Foreign Corporation, Daewoo Shipbuilding & Marine Engineering Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Daewoo sits between Cameron Health, Inc. (72 patents, rank #4,808) and Edge 3 Technologies (72 patents, rank #4,816) - the closest US assignees by grant volume. The composite Innovation Score of 50.3/100 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 26 grants, compared with 46 in the 2015–2019 window, a -43% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s 11.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 39 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Daewoo Shipbuilding & Marine Engineering Co., Ltd. against peers pursuing similar technology classes.

Who files at Daewoo's volume?

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

patents

What this shows Daewoo holds 72 patents at rank #4,812, 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 Daewoo

By rank, the assignees closest to #4,812 in granted patent volume.

Leaders in B63B (Ships OR Other Waterborne Vessels)

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

Daewoo's Innovation Score vs. every tracked assignee

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

50 Top 13% higher than 87% 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%). Below this entry. 40–50: 11,491 US assignees (23%). Below this entry. 50–60: 5,058 US assignees (10%). This entry sits in this band. 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

2468101214 2015201620172018201920202021202220232024 3
USPTO utility patent grants by year · 2015–2024

Grants by year

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

View data table
Daewoo Shipbuilding & Marine Engineering Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 11 15.3%
2016 12 16.7%
2017 8 11.1%
2018 8 11.1%
2019 7 9.7%
2020 7 9.7%
2021 3 4.2%
2022 6 8.3%
2023 7 9.7%
2024 3 4.2%

Which technologies does Daewoo Shipbuilding & Marine Engineering Co., Ltd. patent most?

Top 15 of 39 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Multi-domain
Claim Depth Simple
Velocity Declining

Where it ranks

Overall rank by patents

#4,812

Across all tracked assignees

Innovation Score

50.3 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 Daewoo Shipbuilding & Marine Engineering Co., Ltd. hold?
Daewoo Shipbuilding & Marine Engineering Co., Ltd. holds 72 US granted patents filed between 2015 and 2024, spanning 39 technology areas.
What is Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s Innovation Score?
Daewoo Shipbuilding & Marine Engineering Co., Ltd. has an Innovation Score of 50.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Daewoo Shipbuilding & Marine Engineering Co., Ltd. focus on?
Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s top technology area is B63B (SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING) with 49 patents. The company has filed patents in 39 CPC subclasses total.
Is Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s patent filing rate increasing or decreasing?
Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s recent filing velocity is -43% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s patents?
Daewoo Shipbuilding & Marine Engineering Co., Ltd.'s patents average 11.8 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Daewoo Shipbuilding & Marine Engineering 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

Daewoo's 72 grants land it in the top 13% 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 - Daewoo ranks #4,812 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in B63B - see who else leads that technology area. B63B 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.