Mantel: check that the 39 matched families are theirs before writing
Mantel holds 39 patent families: 15 granted and 24 published and pending. Filing began in 2005, with the most recent published filing dated 2024-07-24. The families appear in 8 patent offices: Austria, Australia, Switzerland, China and Germany.Patent figures from Google Patents Public Data, reviewed 2026-09-14. Funding: $18.3M round, Alumni Ventures, Engine Ventures and MCJ, 2026-08-24. Assignee matching for this company is ambiguous and the figures need manual confirmation.
Mantel proposes a method to trap CO2 before it enters the atmosphere.
The funding headline
Mantel raised $18.3M in a round, with Alumni Ventures and Engine Ventures among its investors, announced 2026-08-24.
Behind that announcement is a patent position worth examining on its own terms.
What the record contains
39 patent families appear under the company name: 15 granted and 24 published and pending.
Granted claims can be examined today. Pending applications describe what is being pursued, and their scope can still change.
When the filings were made
Filing runs from 2005 to 2024.
Filings from roughly the last eighteen months are not yet published, so the most recent years understate current activity.
Where the claims sit
The claims cluster in F01C and F16H.
How closely those areas track the product is what turns a count into something usable.
Where protection is being sought
The families appear in 8 patent offices: Austria, Australia, Switzerland, China and Germany.
Geographic coverage indicates which markets the company expects to matter.
What happens next
The current position is a baseline. What changes around it carries more information than the count does.
What happens next
Which new filings appear as the current applications publish?
Do the granted claims track the product the company is selling?
Which organizations begin filing or citing in the same areas?
Does the assignment record still name the operating entity?
Following those together can distinguish a passing resemblance from a subject deserving deeper investigation.
Common questions
How many patents does Mantel have?
Mantel holds 39 patent families as reviewed in 2026-09: 15 granted and 24 published and pending.
How many of Mantel's patents are granted?
15 of the 39 families are granted, or 38 percent. The remaining 24 are published and still under examination.
What technology do Mantel's patents cover?
Mantel's claims cluster in F01C, F16H and separation (B01D). Recent filing titles include "systems and methods for co<" and "sub>".
Where has Mantel filed patents?
Mantel's families appear in 8 patent offices: Austria, Australia, Switzerland, China, Germany and Europe.
Who invented Mantel's patents?
114 inventors are named across the portfolio. The most frequently named is Paul Marko. Inventor names do not establish ownership, which is determined by assignment records.
How much has Mantel raised?
Mantel raised $18.3M in a round announced 2026-08-24, with Alumni Ventures, Engine Ventures, MCJ and Hartree Partners among its investors.
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