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CPC technology class · C08

C08B - Polysaccharides

Polysaccharides; derivatives thereof. 3,742 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

3,742
US patents granted
C08
Parent CPC class
20
Active assignees
+9%
5-yr velocity

The verdict

Polysaccharides ranks #285 of 670 CPC technology areas - 3,742 US patents granted since 2015, with filing up 9% over five years.

#285
of 670 CPC technology areas
3,742
US patents granted, 2015–2025
Axsome Therapeutics
leading assignee (72)
+9%
filing velocity, last 5 yrs
Top assignee: Axsome Therapeutics, Inc. (72 patents)

CPC subclass C08B - POLYSACCHARIDES; DERIVATIVES THEREOF - covers 3,742 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C08 (ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON). See our CPC classification guide for how the system works.

The competitive landscape in C08B is shaped by 20 distinct companies actively filing in this space. Axsome Therapeutics, Inc. leads with 72 patents, followed by Nutrition & Biosciences USA 4, Inc. at 51 grants and Xyleco, Inc. at 43.

Filing activity in C08B is up 9% 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 C08B innovation accelerating?

US utility-patent grants per year in C08B, 2015–2025 - recent five years are up 9% versus 2015–2019.

150200250300350400 20152016201720182019202020212022202320242025 177

Who leads C08B?

The 12 most active assignees in POLYSACCHARIDES; DERIVATIVES THEREOF - wider bars mean more grants

patents

What this shows Axsome Therapeutics is the most active filer in C08B, holding 72 of the 3,742 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 C08B
Rank Company Patents in C08B
#1 Axsome Therapeutics, Inc. 72
#2 Nutrition & Biosciences USA 4, Inc. 51
#3 Xyleco, Inc. 43
#4 Eastman Chemical Company 35
#5 Daicel Corporation 33
#6 Nippon Paper Industries Co., Ltd. 30
#7 Cargill, Incorporated 29
#8 Galderma Holding Sa 28
#9 Jiangnan University 27
#10 OJI Holdings Corporation 26
#11 Cydex Pharmaceuticals, Inc. 24
#12 Dupont Industrial Biosciences USA, Llc 24
#13 Glaxosmithkline Biologicals Sa 23
#14 Corn Products Development, Inc. 22
#15 Stora Enso OYJ 21
#16 Upm-kymmene Corporation 20
#17 Fidia Farmaceutici S.p.a. 20
#18 Lenzing Aktiengesellschaft 19
#19 Roquette Freres 18
#20 Seikagaku Corporation 16

About This Class

CPC subclass C08B belongs to class C08.

3,742 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 C08B 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 C08B assignees by class footprint. Bubble size = patents in C08B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C08B assignees by class footprint. Bubble size = patents in C08B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 020406080 Patents in C08B Avg claims / patent (company-wide) Axsome TherapeuticsNutrition & Bioscienc…XylecoEastman ChemicalDaicelNippon Paper Industri…Cargill IncorporatedGalderma HoldingJiangnan UniversityOji HoldingsCydex PharmaceuticalsDupont Industrial Bio…Glaxosmithkline Biolo…Corn Products Develop…
Top 14 C08B assignees by class footprint. Bubble size = patents in C08B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C08B?
CPC subclass C08B covers POLYSACCHARIDES; DERIVATIVES THEREOF. It belongs to CPC class C08 (ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON), with 3,742 US utility patents granted since 2015.
How many patents have been filed in C08B?
3,742 US utility patents were granted in CPC subclass C08B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C08B?
Axsome Therapeutics, Inc. leads C08B with 72 patents, making it the most active assignee in this technology area.
How is patent data for C08B 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., C08) is a broad technology category. Subclasses like C08B 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.