PlainPatent

CPC technology class · B27

B27J - Mechanical Working OF CANE

Mechanical working of cane, cork, or similar materials. 32 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

32
US patents granted
B27
Parent CPC class
8
Active assignees
+300%
5-yr velocity

The verdict

Mechanical Working OF CANE ranks #649 of 670 CPC technology areas - 32 US patents granted since 2015, with filing up 300% over five years.

#649
of 670 CPC technology areas
32
US patents granted, 2015–2025
Nanjing Forestry Univ…
leading assignee (3)
+300%
filing velocity, last 5 yrs
Top assignee: Nanjing Forestry University (3 patents)

CPC subclass B27J - MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS - covers 32 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B27 (WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL). See our CPC classification guide for how the system works.

The competitive landscape in B27J is shaped by 8 distinct companies actively filing in this space. Nanjing Forestry University leads with 3 patents, followed by Vinventions USA, Llc at 2 grants and Project NOAH, Inc. at 2.

Filing activity in B27J is up 300% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is B27J innovation accelerating?

US utility-patent grants per year in B27J, 2015–2025 - recent five years are up 300% versus 2015–2019.

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Who leads B27J?

The 12 most active assignees in MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS - wider bars mean more grants

patents

What this shows Nanjing Forestry Univ… is the most active filer in B27J, holding 3 of the 32 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 B27J
Rank Company Patents in B27J
#1 Nanjing Forestry University 3
#2 Vinventions USA, Llc 2
#3 Project NOAH, Inc. 2
#4 Parric Ningbo Stationary And Gifts Mfg. Co., Ltd. 1
#5 International Centre FOR Bamboo AND Rattan 1
#6 Southwest Forestry University 1
#7 JM Industries Group 1
#8 Crocodile Products Inc. 1

About This Class

CPC subclass B27J belongs to class B27.

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

8 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 B27J 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 8 B27J assignees by class footprint. Bubble size = patents in B27J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 8 B27J assignees by class footprint. Bubble size = patents in B27J. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 8 data points (bubble-sized by third dimension). 010203040 0.511.522.533.5 Patents in B27J Avg claims / patent (company-wide) Nanjing Forestry Univ…Vinventions UsaProject NoahParric Ningbo Station…International Centre…Southwest Forestry Un…Jm Industries GroupCrocodile Products
Top 8 B27J assignees by class footprint. Bubble size = patents in B27J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B27J?
CPC subclass B27J covers MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS. It belongs to CPC class B27 (WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL), with 32 US utility patents granted since 2015.
How many patents have been filed in B27J?
32 US utility patents were granted in CPC subclass B27J between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B27J?
Nanjing Forestry University leads B27J with 3 patents, making it the most active assignee in this technology area.
How is patent data for B27J 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., B27) is a broad technology category. Subclasses like B27J 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.