PlainPatent

CPC technology class · B09

B09C - Reclamation OF Contaminated SOIL

Reclamation of contaminated soil. 712 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

712
US patents granted
B09
Parent CPC class
20
Active assignees
+14%
5-yr velocity

The verdict

Reclamation OF Contaminated SOIL ranks #498 of 670 CPC technology areas - 712 US patents granted since 2015, with filing up 14% over five years.

#498
of 670 CPC technology areas
712
US patents granted, 2015–2025
Chevron U
leading assignee (12)
+14%
filing velocity, last 5 yrs
Top assignee: Chevron U.s.a. Inc. (12 patents)

CPC subclass B09C - RECLAMATION OF CONTAMINATED SOIL - covers 712 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B09 (DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL). See our CPC classification guide for how the system works.

The competitive landscape in B09C is shaped by 20 distinct companies actively filing in this space. Chevron U.s.a. Inc. leads with 12 patents, followed by Remediation Products, Inc. at 11 grants and Loci Controls, Inc. at 10.

Filing activity in B09C is up 14% 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 B09C innovation accelerating?

US utility-patent grants per year in B09C, 2015–2025 - recent five years are up 14% versus 2015–2019.

4050607080 20152016201720182019202020212022202320242025 43

Who leads B09C?

The 12 most active assignees in RECLAMATION OF CONTAMINATED SOIL - wider bars mean more grants

patents

What this shows Chevron U is the most active filer in B09C, holding 12 of the 712 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 B09C
Rank Company Patents in B09C
#1 Oxytec Llc 12
#2 Remediation Products, Inc. 11
#3 Loci Controls, Inc. 10
#4 Specialty Earth Sciences, Llc 10
#5 Chinese Research Academy OF Environmental Sciences 9
#6 Geosyntec Consultants, Inc. 7
#7 Regenesis Bioremediation Products 7
#8 Tersus Environmental Llc 6
#9 China University OF Petroleum (east China) 5
#10 University Of Saskatchewan 5
#11 Harsco Corporation 5
#12 LSC Environmental Products, Llc 5
#13 TRS Holdings Llc 5
#14 Greenstract, Llc 5
#15 HMR Solutions Inc. 5
#16 Innovative Environmental Technologies, Inc. 5
#17 JRW Bioremediation, Llc 5
#18 North China Electrical Power University 4
#19 Nanjing TECH University 4
#20 Clean Chemistry, Inc. 4

About This Class

CPC subclass B09C belongs to class B09.

712 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 B09C 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 B09C assignees by class footprint. Bubble size = patents in B09C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 B09C assignees by class footprint. Bubble size = patents in B09C. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 01020304050 468101214 Patents in B09C Avg claims / patent (company-wide) OxytecRemediation ProductsLoci ControlsSpecialty Earth Scien…Chinese Research Acad…Geosyntec ConsultantsRegenesis Bioremediat…Tersus EnvironmentalChina University Of P…University of Saskatc…HarscoLsc Environmental Pro…Trs HoldingsGreenstract
Top 14 B09C assignees by class footprint. Bubble size = patents in B09C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B09C?
CPC subclass B09C covers RECLAMATION OF CONTAMINATED SOIL. It belongs to CPC class B09 (DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL), with 712 US utility patents granted since 2015.
How many patents have been filed in B09C?
712 US utility patents were granted in CPC subclass B09C between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B09C?
Chevron U.s.a. Inc. leads B09C with 12 patents, making it the most active assignee in this technology area.
How is patent data for B09C 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., B09) is a broad technology category. Subclasses like B09C 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.