PlainPatent

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 filing trajectory.

159
US patents granted
C12
Parent CPC class
20
Active assignees
+11%
5-yr velocity

The verdict

Recovery OF By-products OF Fermented Solutions ranks #613 of 670 CPC technology areas - 159 US patents granted since 2015, with filing up 11% over five years.

#613
of 670 CPC technology areas
159
US patents granted, 2015–2025
Poet Research
leading assignee (14)
+11%
filing velocity, last 5 yrs
Top assignee: POET Research, Inc. (14 patents)

CPC subclass C12F - RECOVERY OF BY-PRODUCTS OF FERMENTED SOLUTIONS ; DENATURED ALCOHOL; PREPARATION THEREOF - covers 159 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C12 (BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING). See our CPC classification guide for how the system works.

The competitive landscape in C12F is shaped by 20 distinct companies actively filing in this space. POET Research, Inc. leads with 14 patents, followed by Fluid Quip Technologies, Llc at 9 grants and Iogen Corporation at 8.

Filing activity in C12F is up 11% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C12F innovation accelerating?

US utility-patent grants per year in C12F, 2015–2025 - recent five years are up 11% 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

About This Class

CPC subclass C12F belongs to class C12.

159 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

← All Technology Classes Technology Rankings →

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).

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 Biof…Iogen EnergyFluid QuipLucase3 L CIcmPontificia Universida…Greenfield Specialty…Verbio Vereinigte Bio…Direvo Industrial Bio…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).

Frequently Asked Questions

What is CPC class C12F?
CPC subclass C12F covers RECOVERY OF BY-PRODUCTS OF FERMENTED SOLUTIONS ; DENATURED ALCOHOL; PREPARATION THEREOF. It belongs to CPC class C12 (BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING), with 159 US utility patents granted since 2015.
How many patents have been filed in C12F?
159 US utility patents were granted in CPC subclass C12F between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C12F?
POET Research, Inc. leads C12F with 14 patents, making it the most active assignee in this technology area.
How is patent data for C12F collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., C12) is a broad technology category. Subclasses like C12F provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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.