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CPC technology class · C12

C12F - Recovery Of By-products Of Fermented Solutions

Recovery of by-products of fermented solutions ; denatured alcohol; preparation thereof. 159 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

159
US patents granted
#10/12
in C12
0.1%
C12 class share
-7%
5-yr velocity

The verdict

According to USPTO PatentsView, Recovery Of By-products Of Fermented Solutions ranks #613 of 670 CPC technology areas - 159 US patents granted since 2015, with recorded grant volume down 7% over five years.

#613
of 670 CPC technology areas
159
US patents granted, 2015–2025
Poet Research
leading assignee (14)
-7%
grant velocity, last 5 yrs

How C12F's grant cadence moved

Between 2020–2024, C12F recorded 67 grants versus 72 in 2015–2019 (-7% equal-window velocity). Across complete years, output peaked in 2015 at 19 grants and bottomed in 2020 at 9 (+111% peak-over-trough). Lead assignee Poet Research, Inc. holds 8.8% of the class ; the top three share 19.5%.

Leaderboard read

C12F concentration, lead at 8.8%

Poet Research, Inc. leads this historical grant record at 8.8% of C12F - us corporation assignees hold 73% of class grants (60 of 82). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
8.8%

14 of 159 grants

Top three share
19.5%

of the class's recorded grants

Lead over #2
5

more grants than Fluid Quip Technologies, LLC

Where C12F sits inside C12

Among 12 subclasses in C12 (BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; Mutation OR Genetic Engineering), C12F ranks #10 and holds 0.1% of the parent class's 144,620 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C12N 68,530 C12Q 32,189 C12Y 17,214 C12P 13,948 C12M 8,154 C12R 3,107 C12C 506 C12G 389

Rising assignees active in C12F

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

  1. #1 LucasE3, L.C. 1.67x 3 → 5 company-wide · 5 in C12F
  2. #2 Fluid Quip Technologies, LLC 1.50x 8 → 12 company-wide · 9 in C12F
  3. #3 Poet Research, Inc. 1.15x 33 → 38 company-wide · 14 in C12F
  4. #4 Iogen Corporation 0.60x 20 → 12 company-wide · 8 in C12F

C12F grants by year, peak 2015 (19)

US utility-patent grants per year in C12F, 2015–2025 - recent five years are down 7% versus 2015–2019.

5101520 20152016201720182019202020212022202320242025 13

Who leads C12F?

The 12 most active assignees in Recovery OF By-products OF Fermented Solutions ; Denatured ALCOHOL; Preparation Thereof - wider bars mean more grants

patents

What this shows Poet Research is the most active filer in C12F, holding 14 of the 159 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass C12F
Rank Company Patents in C12F
#1 Poet Research, Inc. 14
#2 Fluid Quip Technologies, LLC 9
#3 Iogen Corporation 8
#4 GS Cleantech Corporation 8
#5 Butamax Advanced Biofuels LLC 5
#6 Iogen Energy Corporation 5
#7 Fluid Quip, Inc. 5
#8 LucasE3, L.C. 5
#9 ICM, Inc. 4
#10 Pontificia Universidad Catolica DE Chile 2
#11 Greenfield Specialty Alcohols Inc. 2
#12 Verbio Vereinigte Bioenergie AG 2
#13 Direvo Industrial Biotechnology GmbH 2
#14 Poet Grain (OCTANE), LLC 2
#15 Virent, Inc. 1
#16 Basf Enzymes LLC 1
#17 Ethox Chemicals, LLC 1
#18 Chemtor, LP 1
#19 Energy Integration, Inc. 1
#20 Akbev Group, LLC 1

Footprint here vs. claim strategy

Each dot is a leading C12F assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 C12F assignees by class footprint. Bubble size = patents in C12F. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 10152025 051015 Patents in C12F Avg claims / patent (company-wide) Poet ResearchFluid QuipIogenGs CleantechButamax Advanced…Iogen EnergyFluid QuipLucase3 L CIcmPontificia Universidad…Greenfield Specialty…Verbio Vereinigte…Direvo Industrial…Poet Grain (Octane)
Top 14 C12F assignees by class footprint. Bubble size = patents in C12F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about C12F

Which company holds the most patents in C12F?
Poet Research, Inc. leads C12F with 14 patents (8.8% of the subclass). By PatentsView assignee type, us corporations account for 73% of class grants.
Which C12F assignees grew fastest recently?
Among assignees with ≥5 grants in C12F, LucasE3, L.C. shows the highest company-wide grant multiple (1.67x: 3 grants in 2019–2021 → 5 in 2022–2024) while holding 5 patents in this subclass. Growth is company-wide, not class-only.
How does C12F compare inside parent class C12?
Inside C12 (BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; Mutation OR Genetic Engineering), C12F ranks #10 of 12 subclasses by grant volume and holds 0.1% of the parent class total. The largest sibling is C12N (68,530 grants).

What to do with this data

C12F in context - here's where to go next.

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - C12F figures are USPTO PatentsView granted-utility totals for this subclass (159 grants in the tracked window).

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.