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 grant trajectory.

174
US patents granted
#2/2
in C13
18.8%
C13 class share
-35%
5-yr velocity

The verdict

According to USPTO PatentsView, Production Of Sucrose ranks #607 of 670 CPC technology areas - 174 US patents granted since 2015, with recorded grant volume down 35% over five years.

#607
of 670 CPC technology areas
174
US patents granted, 2015–2025
Toray Industries
leading assignee (12)
-35%
grant velocity, last 5 yrs

How C13B's grant cadence moved

Between 2020–2024, C13B recorded 64 grants versus 98 in 2015–2019 (-35% equal-window velocity). Across complete years, output peaked in 2017 at 26 grants and bottomed in 2021 at 10 (+160% peak-over-trough). Lead assignee Virdia, LLC holds 3.4% of the class ; the top three share 9.2%.

Leaderboard read

C13B concentration, lead at 3.4%

Virdia, LLC leads this historical grant record at 3.4% of C13B - foreign corporation assignees hold 63% of class grants (45 of 71). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
3.4%

6 of 174 grants

Top three share
9.2%

of the class's recorded grants

Lead over #2
1

more grants than BMA Braunschweigische Maschinenbauanstalt AG

Where C13B sits inside C13

Among 2 subclasses in C13 (Sugar Industry), C13B ranks #2 and holds 18.8% of the parent class's 928 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C13K 754

Rising assignees active in C13B

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 BMA Braunschweigische Maschinenbauanstalt AG 1.33x 3 → 4 company-wide · 5 in C13B
  2. #2 Virdia, LLC 0.36x 11 → 4 company-wide · 6 in C13B
  3. #3 IAF Science Holdings Ltd. 0.17x 6 → 1 company-wide · 5 in C13B

C13B grants by year, peak 2017 (26)

US utility-patent grants per year in C13B, 2015–2025 - recent five years are down 35% 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

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). 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…AmerilabLesaffre Et CompagnieWageningen Universitei…Mitsubishi Hitachi…Tiense Suikerraffinade…Sudzucker Aktiengesell…
Top 14 C13B assignees by class footprint. Bubble size = patents in C13B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about C13B

Which company holds the most patents in C13B?
Toray Industries, Inc. leads C13B with 12 patents (3.4% of the subclass). By PatentsView assignee type, foreign corporations account for 63% of class grants.
Which C13B assignees grew fastest recently?
Among assignees with ≥5 grants in C13B, BMA Braunschweigische Maschinenbauanstalt AG shows the highest company-wide grant multiple (1.33x: 3 grants in 2019–2021 → 4 in 2022–2024) while holding 5 patents in this subclass. Growth is company-wide, not class-only.
How does C13B compare inside parent class C13?
Inside C13 (Sugar Industry), C13B ranks #2 of 2 subclasses by grant volume and holds 18.8% of the parent class total. The largest sibling is C13K (754 grants).

What to do with this data

C13B 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 - C13B figures are USPTO PatentsView granted-utility totals for this subclass (174 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.