USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Denso Marston Ltd.

USPTO PatentsView assignee record - 11 granted patents across 10 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F28D (HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

18.8

Avg claims per patent

+20%

5-year filing velocity

The verdict

Denso holds 11 US patents across 10 technology areas, rank #24,184 of 50,000 tracked assignees.

#24,184
of 50,000 US assignees by volume: Top 55%
by Innovation Score (33.7/100): 18.8
avg claims per patent: +20%
filing velocity, last 5 yrs

Portfolio overview

Denso Marston Ltd. has been granted 11 US utility patents between 2015 and 2024, placing Denso Marston Ltd. at rank #24,184 across all assignees tracked by PlainPatent. This portfolio spans 10 distinct Cooperative Patent Classification (CPC) subclasses, averaging 18.8 claims per patent with primary concentration in F28D (HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT). As a Foreign Corporation, Denso Marston Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Denso sits between DATA Scape Ltd. (11 patents, rank #24,180) and Dizpersion Corporation (11 patents, rank #24,188) - the closest US assignees by grant volume. The composite Innovation Score of 33.7/100 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 6 grants, compared with 5 in the 2015–2019 window, a +20% 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. Denso Marston Ltd.'s 18.8 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 10 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Denso Marston Ltd. against peers pursuing similar technology classes.

DATA Scape

11
DATA Vault Holdin…

11
Deepintent

11
Denneroll Holding…

11
Deutsche Institut…

11
Dfinity Stiftung

11
Diftek Lasers

11
Dizpersion

11
Denso Marston ◀

11

What this shows Denso holds 11 patents at rank #24,184, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Denso's Innovation Score vs. every tracked assignee

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

34 Top 55% higher than 45% 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 · 2015–2024

Grants by year

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

View data table

Denso Marston Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	9.1%
2016	1	9.1%
2018	2	18.2%
2019	1	9.1%
2020	3	27.3%
2021	1	9.1%
2023	1	9.1%
2024	1	9.1%

Which technologies does Denso Marston Ltd. patent most?

F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 10

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 10

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 4

B60K - ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY 4

F02B - INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 3

B60Y - INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY 3

F01P - COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES 2

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

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

F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 1

Top 10 of 10 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Velocity Growing

Where it ranks

Overall rank by patents

#24,184

Across all tracked assignees

Innovation Score

33.7 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 Denso Marston Ltd. hold?

Denso Marston Ltd. holds 11 US granted patents filed between 2015 and 2024, spanning 10 technology areas.

What is Denso Marston Ltd.'s Innovation Score?

Denso Marston Ltd. has an Innovation Score of 33.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Denso Marston Ltd. focus on?

Denso Marston Ltd.'s top technology area is F28D (HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT) with 10 patents. The company has filed patents in 10 CPC subclasses total.

Is Denso Marston Ltd.'s patent filing rate increasing or decreasing?

Denso Marston Ltd.'s recent filing velocity is +20% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Denso Marston Ltd.'s patents?

Denso Marston Ltd.'s patents average 18.8 claims each. This falls within the standard range, providing solid legal coverage.

How is the Denso Marston 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

Denso's 11 grants land it in the top 55% 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 - Denso ranks #24,184 of 50,000. Top 50 holders
Most of this portfolio concentrates in F28D - see who else leads that technology area. F28D 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.