PlainPatent

CPC technology class · B41

B41L - Apparatus Or Devices For Manifolding

Apparatus or devices for manifolding, duplicating or printing for office or other commercial purposes; addressing machines or like series-printing machines. 113 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

113
US patents granted
#8/11
in B41
0.3%
B41 class share
-4%
5-yr velocity

The verdict

According to USPTO PatentsView, Apparatus Or Devices For Manifolding ranks #619 of 670 CPC technology areas - 113 US patents granted since 2015, with recorded grant volume down 4% over five years.

#619
of 670 CPC technology areas
113
US patents granted, 2015–2025
Hewlett-packard Development
leading assignee (21)
-4%
grant velocity, last 5 yrs

How B41L's grant cadence moved

Between 2020–2024, B41L recorded 49 grants versus 51 in 2015–2019 (-4% equal-window velocity). Across complete years, output peaked in 2015 at 14 grants and bottomed in 2019 at 7 (+100% peak-over-trough). Lead assignee DET International Holding Limited holds 1.8% of the class ; the top three share 4.4%.

Leaderboard read

B41L concentration, lead at 1.8%

DET International Holding Limited leads this historical grant record at 1.8% of B41L - foreign corporation assignees hold 57% of class grants (8 of 14). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
1.8%

2 of 113 grants

Top three share
4.4%

of the class's recorded grants

Lead over #2
0

more grants than Media Blast & Abrasive, Inc.

Where B41L sits inside B41

Among 11 subclasses in B41 (PRINTING; Lining MACHINES; TYPEWRITERS; Stamps), B41L ranks #8 and holds 0.3% of the parent class's 38,209 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B41J 26,654 B41M 6,377 B41F 2,980 B41P 756 B41N 568 B41C 534 B41K 197 B41D 18

B41L grants by year, peak 2015 (14)

US utility-patent grants per year in B41L, 2015–2025 - recent five years are down 4% versus 2015–2019.

46810121416 20152016201720182019202020212022202320242025 6

Who leads B41L?

The 12 most active assignees in Apparatus OR Devices FOR Manifolding, Duplicating OR Printing FOR Office OR Other Commercial PURPOSES; Addressing Machines OR Like Series-printing Machines - wider bars mean more grants

patents

What this shows Hewlett-packard… is the most active filer in B41L, holding 21 of the 113 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 B41L
Rank Company Patents in B41L
#1 DET International Holding Limited 2
#2 Media Blast & Abrasive, Inc. 2
#3 Janome Sewing Machine Co., Ltd. 1
#4 Komori Corporation 1
#5 Foxlink Image Technology Co., Ltd. 1
#6 Canon Finetech Inc. 1
#7 Esko-Graphics Imaging GmbH 1
#8 Private Identity LLC 1
#9 Taiwan Hopax Chemicals Mfg. Co., Ltd. 1
#10 manroland web systems GmbH 1
#11 Innovative ART Concepts, LLC 1
#12 Frama AG 1

Footprint here vs. claim strategy

Each dot is a leading B41L 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 12 B41L assignees by class footprint. Bubble size = patents in B41L. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 12 data points (bubble-sized by third dimension). 051015202530 0.511.522.5 Patents in B41L Avg claims / patent (company-wide) Det International…Media Blast & AbrasiveJanome Sewing MachineKomoriFoxlink Image…Canon FinetechEsko-graphics ImagingPrivate IdentityTaiwan Hopax…manroland web systemsInnovative Art…Frama
Top 12 B41L assignees by class footprint. Bubble size = patents in B41L. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about B41L

Which company holds the most patents in B41L?
Hewlett-packard Development Company, L.P. leads B41L with 21 patents (1.8% of the subclass). By PatentsView assignee type, foreign corporations account for 57% of class grants.
How does B41L compare inside parent class B41?
Inside B41 (PRINTING; Lining MACHINES; TYPEWRITERS; Stamps), B41L ranks #8 of 11 subclasses by grant volume and holds 0.3% of the parent class total. The largest sibling is B41J (26,654 grants).

What to do with this data

B41L in context - here's where to go next.

  • DET International Holding Limited leads B41L with 2 grants in this class. See full portfolio
  • B41L ranks #619 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class B41, the largest sibling subclass is B41J with 26,654 grants. Explore B41J

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

Methodology - B41L figures are USPTO PatentsView granted-utility totals for this subclass (113 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.