PlainPatent

CPC technology class · B43

B43M - Bureau Accessories

Bureau accessories not otherwise provided for. 167 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

167
US patents granted
#3/3
in B43
12.8%
B43 class share
-35%
5-yr velocity

The verdict

According to USPTO PatentsView, Bureau Accessories ranks #610 of 670 CPC technology areas - 167 US patents granted since 2015, with recorded grant volume down 35% over five years.

#610
of 670 CPC technology areas
167
US patents granted, 2015–2025
Biomed Packaging Systems
leading assignee (16)
-35%
grant velocity, last 5 yrs

How B43M's grant cadence moved

Between 2020–2024, B43M recorded 60 grants versus 93 in 2015–2019 (-35% equal-window velocity). Across complete years, output peaked in 2017 at 25 grants and bottomed in 2023 at 6 (+317% peak-over-trough). Lead assignee Biomed Packaging Systems, Inc. holds 9.6% of the class ; the top three share 21.6%.

Leaderboard read

B43M concentration, lead at 9.6%

Biomed Packaging Systems, Inc. leads this historical grant record at 9.6% of B43M - foreign corporation assignees hold 57% of class grants (56 of 99). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
9.6%

16 of 167 grants

Top three share
21.6%

of the class's recorded grants

Lead over #2
5

more grants than Riso Kagaku Corporation

Where B43M sits inside B43

Among 3 subclasses in B43 (Writing OR Drawing IMPLEMENTS; Bureau Accessories), B43M ranks #3 and holds 12.8% of the parent class's 1,309 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B43K 784 B43L 358

Rising assignees active in B43M

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

  1. #1 DMT Solutions Global Corporation 0.71x 7 → 5 company-wide · 9 in B43M
  2. #2 Societe BIC 0.48x 64 → 31 company-wide · 7 in B43M
  3. #3 Riso Kagaku Corporation 0.40x 89 → 36 company-wide · 11 in B43M

B43M grants by year, peak 2017 (25)

US utility-patent grants per year in B43M, 2015–2025 - recent five years are down 35% versus 2015–2019.

51015202530 20152016201720182019202020212022202320242025 12

Who leads B43M?

The 12 most active assignees in Bureau Accessories NOT Otherwise Provided FOR - wider bars mean more grants

patents

What this shows Biomed Packaging… is the most active filer in B43M, holding 16 of the 167 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 B43M
Rank Company Patents in B43M
#1 Biomed Packaging Systems, Inc. 16
#2 Riso Kagaku Corporation 11
#3 DMT Solutions Global Corporation 9
#4 Societe BIC 7
#5 Boewe Systec GMBH 7
#6 Pitney Bowes Inc. 4
#7 Quadient Technologies France 4
#8 Opex Corporation 3
#9 Neopost Technologies 3
#10 Kokuyo Co., Ltd. 3
#11 Tombow Pencil Co., Ltd. 3
#12 Kern AG 3
#13 Ferag AG 2
#14 Mueller Martini Holding AG 2
#15 Kotobuki & Co., Ltd. 2
#16 Bell and Howell, LLC 2
#17 BÖWE Systec GmbH 2
#18 Sanford L.P. 1
#19 Francotyp-Postalia GmbH 1
#20 Arrow International LLC 1

Footprint here vs. claim strategy

Each dot is a leading B43M 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 B43M assignees by class footprint. Bubble size = patents in B43M. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 5101520 05101520 Patents in B43M Avg claims / patent (company-wide) Biomed Packaging…Riso KagakuDmt Solutions GlobalSociete BicBoewe SystecPitney BowesQuadient FranceOpexNeopostKokuyoTombow PencilKernFeragMueller Martini…
Top 14 B43M assignees by class footprint. Bubble size = patents in B43M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about B43M

Which company holds the most patents in B43M?
Biomed Packaging Systems, Inc. leads B43M with 16 patents (9.6% of the subclass). By PatentsView assignee type, foreign corporations account for 57% of class grants.
Which B43M assignees grew fastest recently?
Among assignees with ≥5 grants in B43M, DMT Solutions Global Corporation shows the highest company-wide grant multiple (0.71x: 7 grants in 2019–2021 → 5 in 2022–2024) while holding 9 patents in this subclass. Growth is company-wide, not class-only.
How does B43M compare inside parent class B43?
Inside B43 (Writing OR Drawing IMPLEMENTS; Bureau Accessories), B43M ranks #3 of 3 subclasses by grant volume and holds 12.8% of the parent class total. The largest sibling is B43K (784 grants).

What to do with this data

B43M in context - here's where to go next.

  • Biomed Packaging Systems, Inc. leads B43M with 16 grants in this class. See full portfolio
  • B43M ranks #610 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class B43, the largest sibling subclass is B43K with 784 grants. Explore B43K

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

Methodology - B43M figures are USPTO PatentsView granted-utility totals for this subclass (167 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.