USPTO 2015–2025 USPTO PatentsView US Corporation

Marsulex Environmental Technologies Corporation

USPTO PatentsView assignee record - 11 granted patents across 12 technology areas, active 2016–2021. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B01D (SEPARATION).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.8

Avg claims per patent

-17%

5-year filing velocity

The verdict

Marsulex holds 11 US patents across 12 technology areas, rank #24,786 of 50,000 tracked assignees.

#24,786
of 50,000 US assignees by volume: Top 79%
by Innovation Score (26.7/100): 9.8
avg claims per patent: -17%
filing velocity, last 5 yrs

Portfolio overview

Marsulex Environmental Technologies Corporation has been granted 11 US utility patents between 2016 and 2021, placing Marsulex Environmental Technologies Corporation at rank #24,786 across all assignees tracked by PlainPatent. This portfolio spans 12 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.8 claims per patent with primary concentration in B01D (SEPARATION). As a US Corporation, Marsulex Environmental Technologies Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Marsulex sits between Manheim Investments, Inc. (11 patents, rank #24,782) and Massey University (11 patents, rank #24,790) - the closest US assignees by grant volume. The composite Innovation Score of 26.7/100 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 5 grants, compared with 6 in the 2015–2019 window, a -17% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US 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. Marsulex Environmental Technologies Corporation's 9.8 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 Marsulex Environmental Technologies Corporation against peers pursuing similar technology classes.

Manheim Investmen…

11
Marathonnorco Aer…

11
Markport

11
Marlow Industries

11
Masdar Institute…

11
Masergy Communica…

11
Mason Electric

11
Massey University

11
Marsulex Environm… ◀

11

What this shows Marsulex holds 11 patents at rank #24,786, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Marsulex's Innovation Score vs. every tracked assignee

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

27 Top 79% higher than 21% 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 · 2016–2021

Grants by year

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

View data table

Marsulex Environmental Technologies Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	18.2%
2017	1	9.1%
2018	2	18.2%
2019	1	9.1%
2020	2	18.2%
2021	3	27.3%

Which technologies does Marsulex Environmental Technologies Corporation patent most?

B01D - SEPARATION 11

C01D - COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM 3

C01C - AMMONIA; CYANOGEN; COMPOUNDS THEREOF 2

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2

F23J - REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 2

C05C - NITROGENOUS FERTILISERS 1

C05G - MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS ; FERTILISERS CHARACTERISED BY THEIR FORM 1

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 1

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

C05D - INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE 1

C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 1

C22B - PRODUCTION AND REFINING OF METALS ; PRETREATMENT OF RAW MATERIALS 1

Top 12 of 12 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#24,786

Across all tracked assignees

Innovation Score

26.7 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 Marsulex Environmental Technologies Corporation hold?

Marsulex Environmental Technologies Corporation holds 11 US granted patents filed between 2016 and 2021, spanning 12 technology areas.

What is Marsulex Environmental Technologies Corporation's Innovation Score?

Marsulex Environmental Technologies Corporation has an Innovation Score of 26.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Marsulex Environmental Technologies Corporation focus on?

Marsulex Environmental Technologies Corporation's top technology area is B01D (SEPARATION) with 11 patents. The company has filed patents in 12 CPC subclasses total.

Is Marsulex Environmental Technologies Corporation's patent filing rate increasing or decreasing?

Marsulex Environmental Technologies Corporation's recent filing velocity is -17% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Marsulex Environmental Technologies Corporation's patents?

Marsulex Environmental Technologies Corporation's patents average 9.8 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Marsulex Environmental Technologies Corporation 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

Marsulex's 11 grants land it in the top 79% 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 - Marsulex ranks #24,786 of 50,000. Top 50 holders
Most of this portfolio concentrates in B01D - see who else leads that technology area. B01D 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.