USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Drever International

USPTO PatentsView assignee record - 5 granted patents across 8 technology areas, active 2019–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F27B (FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

18.0

Avg claims per patent

+300%

5-year filing velocity

The verdict

Drever holds 5 US patents across 8 technology areas, rank #46,164 of 50,000 tracked assignees.

#46,164
of 50,000 US assignees by volume: Top 20%
by Innovation Score (47.0/100): 18.0
avg claims per patent: +300%
filing velocity, last 5 yrs

Portfolio overview

Drever International has been granted 5 US utility patents between 2019 and 2025, placing Drever International at rank #46,164 across all assignees tracked by PlainPatent. This portfolio spans 8 distinct Cooperative Patent Classification (CPC) subclasses, averaging 18.0 claims per patent with primary concentration in F27B (FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS). As a Foreign Corporation, Drever International is one of the more focused assignees in the PatentsView dataset. By volume, Drever sits between Dreamlight Holdings Inc. (5 patents, rank #46,160) and Droneseed Co. (5 patents, rank #46,168) - the closest US assignees by grant volume. The composite Innovation Score of 47.0/100 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 4 grants, compared with 1 in the 2015–2019 window, a +300% 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. Drever International's 18.0 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 8 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Drever International against peers pursuing similar technology classes.

Dreamlight Holdin…

5
Dreampath Diagnos…

5
Dreamvu

5
Dreem

5
Drifire

5
Drilling Innovati…

5
Drinkfinger

5
Droneseed

5
Drever Internatio… ◀

5

What this shows Drever holds 5 patents at rank #46,164, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Drever

By rank, the assignees closest to #46,164 in granted patent volume.

Leaders in F27B (Furnaces)

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

Drever's Innovation Score vs. every tracked assignee

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

47 Top 20% higher than 80% 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 · 2019–2025

Grants by year

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

View data table

Drever International patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	20.0%
2022	1	20.0%
2024	2	40.0%
2025	1	20.0%

Which technologies does Drever International patent most?

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 4

F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 3

C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING 3

F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR 2

F23M - CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR 2

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 1

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 1

Top 8 of 8 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#46,164

Across all tracked assignees

Innovation Score

47.0 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 Drever International hold?

Drever International holds 5 US granted patents filed between 2019 and 2025, spanning 8 technology areas.

What is Drever International's Innovation Score?

Drever International has an Innovation Score of 47.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Drever International focus on?

Drever International's top technology area is F27B (FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS) with 4 patents. The company has filed patents in 8 CPC subclasses total.

Is Drever International's patent filing rate increasing or decreasing?

Drever International's recent filing velocity is +300% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Drever International's patents?

Drever International's patents average 18.0 claims each. This falls within the standard range, providing solid legal coverage.

How is the Drever International 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

Drever's 5 grants land it in the top 20% 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 - Drever ranks #46,164 of 50,000. Top 50 holders
Most of this portfolio concentrates in F27B - see who else leads that technology area. F27B 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 · 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.