CPC technology class · B27

B27H - Bending Wood Or Similar Material

Bending wood or similar material; cooperage; making wheels from wood or similar material. 30 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

30
US patents granted: #11/11
in B27: 0.7%
B27 class share: +17%
5-yr velocity

The verdict

According to USPTO PatentsView, Bending Wood Or Similar Material ranks #650 of 670 CPC technology areas - 30 US patents granted since 2015, with recorded grant volume up 17% over five years.

#650
of 670 CPC technology areas: 30
US patents granted, 2015–2025: Goodrich
leading assignee (3): +17%
grant velocity, last 5 yrs

How B27H's grant cadence moved

Between 2020–2024, B27H recorded 14 grants versus 12 in 2015–2019 (+17% equal-window velocity). Across complete years, output peaked in 2024 at 5 grants and bottomed in 2018 at 1 (+400% peak-over-trough). Lead assignee Nanjing Forestry University holds 6.7% of the class ; the top three share 16.7%.

Leaderboard read

B27H concentration, lead at 6.7%

Nanjing Forestry University leads this historical grant record at 6.7% of B27H - foreign corporation assignees hold 60% of class grants (3 of 5). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 6.7%
Top three share: 16.7%
Lead over #2: 0

Where B27H sits inside B27

Among 11 subclasses in B27 (Working OR Preserving Wood OR Similar MATERIAL; Nailing OR Stapling Machines IN General), B27H ranks #11 and holds 0.7% of the parent class's 4,149 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B27B 1,327 B27N 750 B27G 503 B27K 387 B27M 306 B27F 238 B27C 208 B27D 200

B27H grants by year, peak 2024 (5)

US utility-patent grants per year in B27H, 2015–2025 - recent five years are up 17% versus 2015–2019.

Nanjing Forestry…

2
Eagle Machinery &…

2
Michael Weinig

1

What this shows Goodrich is the most active filer in B27H, holding 3 of the 30 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass B27H
Rank	Company	Patents in B27H
#1	Nanjing Forestry University	2
#2	Eagle Machinery & Supply, Inc.	2
#3	Michael Weinig AG	1

Questions about B27H

Which company holds the most patents in B27H?

Goodrich Corporation leads B27H with 3 patents (6.7% of the subclass). By PatentsView assignee type, foreign corporations account for 60% of class grants.

How does B27H compare inside parent class B27?

Inside B27 (Working OR Preserving Wood OR Similar MATERIAL; Nailing OR Stapling Machines IN General), B27H ranks #11 of 11 subclasses by grant volume and holds 0.7% of the parent class total. The largest sibling is B27B (1,327 grants).

What to do with this data

B27H in context - here's where to go next.

Nanjing Forestry University leads B27H with 2 grants in this class. See full portfolio
B27H ranks #650 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B27, the largest sibling subclass is B27B with 1,327 grants. Explore B27B

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - B27H figures are USPTO PatentsView granted-utility totals for this subclass (30 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.