USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kofulso Co., Ltd

USPTO PatentsView assignee record - 10 granted patents across 12 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A62C (FIRE-FIGHTING).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

3.1

Avg claims per patent

+0%

5-year filing velocity

The verdict

Kofulso holds 10 US patents across 12 technology areas, rank #26,670 of 50,000 tracked assignees.

#26,670
of 50,000 US assignees by volume: Top 31%
by Innovation Score (42.4/100): 3.1
avg claims per patent: +0%
filing velocity, last 5 yrs

Portfolio overview

Kofulso Co., Ltd has been granted 10 US utility patents between 2015 and 2025, placing Kofulso Co., Ltd at rank #26,670 across all assignees tracked by PlainPatent. This portfolio spans 12 distinct Cooperative Patent Classification (CPC) subclasses, averaging 3.1 claims per patent with primary concentration in A62C (FIRE-FIGHTING). As a Foreign Corporation, Kofulso Co., Ltd is one of the more focused assignees in the PatentsView dataset. By volume, Kofulso sits between KMEW Co., Ltd. (10 patents, rank #26,666) and Korens Co., Ltd. (10 patents, rank #26,674) - the closest US assignees by grant volume. The composite Innovation Score of 42.4/100 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 5 grants, compared with 5 in the 2015–2019 window, a +0% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. 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. Kofulso Co., Ltd's 3.1 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 12 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kofulso Co., Ltd against peers pursuing similar technology classes.

KMEW

10
Knowmadics

10
Kobayashi &

10
Kofax Internation…

10
Koppers Delaware

10
Korea Institute O…

10
Korea Western Pow…

10
Korens

10
Kofulso ◀

10

What this shows Kofulso holds 10 patents at rank #26,670, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Kofulso's Innovation Score vs. every tracked assignee

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

42 Top 31% higher than 69% of 50,000 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 · 2015–2025

Grants by year

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

View data table

Kofulso Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	30.0%
2016	2	20.0%
2023	3	30.0%
2024	1	10.0%
2025	1	10.0%

Which technologies does Kofulso Co., Ltd patent most?

A62C - FIRE-FIGHTING 4

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 4

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING 2

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 2

F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 2

E04B - GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS 1

B21D - WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL 1

F24H - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL 1

F24D - DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR 1

F28G - CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS 1

F16M - FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS 1

G09F - DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS 1

Top 12 of 12 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#26,670

Across all tracked assignees

Innovation Score

42.4 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 Kofulso Co., Ltd hold?

Kofulso Co., Ltd holds 10 US granted patents filed between 2015 and 2025, spanning 12 technology areas.

What is Kofulso Co., Ltd's Innovation Score?

Kofulso Co., Ltd has an Innovation Score of 42.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kofulso Co., Ltd focus on?

Kofulso Co., Ltd's top technology area is A62C (FIRE-FIGHTING) with 4 patents. The company has filed patents in 12 CPC subclasses total.

Is Kofulso Co., Ltd's patent filing rate increasing or decreasing?

Kofulso Co., Ltd's recent filing velocity is +0% compared to the prior five-year period. The company is maintaining or growing its patent output.

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

Kofulso Co., Ltd's patents average 3.1 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Kofulso 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

Kofulso's 10 grants land it in the top 31% 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 - Kofulso ranks #26,670 of 50,000. Top 50 holders
Most of this portfolio concentrates in A62C - see who else leads that technology area. A62C 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

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

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.