PlainPatent

CPC technology class · C13

C13B - Production OF Sucrose

Production of sucrose; apparatus specially adapted therefor. 174 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

174
US patents granted
C13
Parent CPC class
20
Active assignees
-28%
5-yr velocity

The verdict

Production OF Sucrose ranks #607 of 670 CPC technology areas - 174 US patents granted since 2015, with filing down 28% over five years.

#607
of 670 CPC technology areas
174
US patents granted, 2015–2025
Toray Industries
leading assignee (12)
-28%
filing velocity, last 5 yrs
Top assignee: Toray Industries, Inc. (12 patents)

CPC subclass C13B - PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR - covers 174 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C13 (SUGAR INDUSTRY). See our CPC classification guide for how the system works.

The competitive landscape in C13B is shaped by 20 distinct companies actively filing in this space. Toray Industries, Inc. leads with 12 patents, followed by BMA Braunschweigische Maschinenbauanstalt Ag at 5 grants and IAF Science Holdings Ltd. at 5.

Filing activity in C13B is down 28% over the past five years versus 2015-2019, a notable slowdown that may signal a maturing field. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C13B innovation accelerating?

US utility-patent grants per year in C13B, 2015–2025 - recent five years are down 28% versus 2015–2019.

51015202530 20152016201720182019202020212022202320242025 7

Who leads C13B?

The 12 most active assignees in PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR - wider bars mean more grants

patents

What this shows Toray Industries is the most active filer in C13B, holding 12 of the 174 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 C13B
Rank Company Patents in C13B
#1 Virdia, Llc 6
#2 BMA Braunschweigische Maschinenbauanstalt Ag 5
#3 IAF Science Holdings Ltd. 5
#4 American Biocarbon, Llc 5
#5 Virent, Inc. 4
#6 Renmatix, Inc. 3
#7 Inbicon A/s 3
#8 LES Equipements Lapierre Inc 3
#9 Amerilab Technologies, Inc. 3
#10 Lesaffre ET Compagnie 2
#11 Wageningen Universiteit 2
#12 Mitsubishi Hitachi Power Systems Environmental Solutions, Ltd. 2
#13 Tiense Suikerraffinaderij N.v. 2
#14 Sudzucker Aktiengesellschaft Mannheim/ochsenfurt 2
#15 Sudzucker Ag 2
#16 Ctc—centro De Tecnologia Canavieira S.a. 2
#17 Carus Llc 2
#18 Novasep Process Solutions 2
#19 Avantium Knowledge Centre B.v. 1
#20 Mizkan Holdings Co., Ltd. 1

About This Class

CPC subclass C13B belongs to class C13.

174 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 C13B 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 C13B assignees by class footprint. Bubble size = patents in C13B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C13B assignees by class footprint. Bubble size = patents in C13B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 051015202530 1234567 Patents in C13B Avg claims / patent (company-wide) VirdiaBma Braunschweigische…Iaf Science HoldingsAmerican BiocarbonVirentRenmatixInbicon A/SLes Equipements Lapie…AmerilabLesaffre Et CompagnieWageningen Universite…Mitsubishi Hitachi Po…Tiense Suikerraffinad…Sudzucker Aktiengesel…
Top 14 C13B assignees by class footprint. Bubble size = patents in C13B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C13B?
CPC subclass C13B covers PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR. It belongs to CPC class C13 (SUGAR INDUSTRY), with 174 US utility patents granted since 2015.
How many patents have been filed in C13B?
174 US utility patents were granted in CPC subclass C13B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C13B?
Toray Industries, Inc. leads C13B with 12 patents, making it the most active assignee in this technology area.
How is patent data for C13B 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., C13) is a broad technology category. Subclasses like C13B 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.