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CPC technology class · B29

B29K - Indexing Scheme Associated With Subclasses B29b

Indexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for ; moulds, ; reinforcements, fillers or preformed parts, e.g. inserts. 22,850 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

22,850
US patents granted
#3/5
in B29
19.7%
B29 class share
+17%
5-yr velocity

The verdict

According to USPTO PatentsView, Indexing Scheme Associated With Subclasses B29b ranks #89 of 670 CPC technology areas - 22,850 US patents granted since 2015, with recorded grant volume up 17% over five years.

#89
of 670 CPC technology areas
22,850
US patents granted, 2015–2025
The Boeing
leading assignee (618)
+17%
grant velocity, last 5 yrs

How B29K's grant cadence moved

Between 2020–2024, B29K recorded 10,930 grants versus 9,378 in 2015–2019 (+17% equal-window velocity). Across complete years, output peaked in 2019 at 2,640 grants and bottomed in 2015 at 1,139 (+132% peak-over-trough). Lead assignee The Boeing Company holds 2.7% of the class ; the top three share 4.9%.

Leaderboard read

B29K concentration, lead at 2.7%

The Boeing Company leads this historical grant record at 2.7% of B29K - foreign corporation assignees hold 54% of class grants (7,342 of 13,685). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
2.7%

618 of 22,850 grants

Top three share
4.9%

of the class's recorded grants

Lead over #2
319

more grants than Nike, Inc.

Where B29K sits inside B29

Among 5 subclasses in B29 (Working OF PLASTICS; Working OF Substances IN A Plastic State IN General), B29K ranks #3 and holds 19.7% of the parent class's 116,272 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B29C 53,431 B29L 23,135 B29D 11,216 B29B 5,640

Rising assignees active in B29K

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 Solventum Intellectual Properties Company 88x 0 → 88 company-wide · 6 in B29K
  2. #2 LM Wind Power A/S 47x 1 → 47 company-wide · 6 in B29K
  3. #3 Workhorse Group Inc. 26x 2 → 52 company-wide · 17 in B29K
  4. #4 SK microworks Co., Ltd. 22x 0 → 22 company-wide · 7 in B29K
  5. #5 Archem Inc. 21x 0 → 21 company-wide · 8 in B29K

B29K grants by year, peak 2019 (2,640)

US utility-patent grants per year in B29K, 2015–2025 - recent five years are up 17% versus 2015–2019.

1,0001,5002,0002,5003,000 20152016201720182019202020212022202320242025 1,397

Who leads B29K?

The 12 most active assignees in Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts - wider bars mean more grants

patents

What this shows The Boeing is the most active filer in B29K, holding 618 of the 22,850 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 B29K
Rank Company Patents in B29K
#1 The Boeing Company 618
#2 Nike, Inc. 299
#3 The Procter & Gamble Company 212
#4 Hewlett-packard Development Company, L.P. 189
#5 DOW Global Technologies LLC 150
#6 Sabic Global Technologies B.V. 150
#7 Toray Industries, Inc. 148
#8 Stratasys Ltd. 146
#9 Xerox Corporation 116
#10 Airbus Operations Limited 110
#11 Mitsubishi Chemical Corporation 105
#12 Carbon, Inc. 104
#13 Arkema France 98
#14 Continuous Composites Inc. 95
#15 Sidel Participations S.A.S 87
#16 Compagnie Generale DES Etablissements Michelin 85
#17 Mitsubishi Gas Chemical Company, Inc. 78
#18 Borealis AG 74
#19 Yoshino Kogyosho Co., Ltd. 73
#20 Abbott Cardiovascular Systems, Inc. 70

Footprint here vs. claim strategy

Each dot is a leading B29K 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 B29K assignees by class footprint. Bubble size = patents in B29K. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 0200400600800 Patents in B29K Avg claims / patent (company-wide) The BoeingNikeThe Procter & GambleHewlett-packard…Dow GlobalSabic Global B VToray IndustriesStratasysXeroxAirbus OperationsMitsubishi ChemicalCarbonArkema FranceContinuous Composites
Top 14 B29K assignees by class footprint. Bubble size = patents in B29K. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B29K's 22,850-grant footprint

Nationwide nearest neighbors for B29K (#89 of 670 by volume ; lead share 2.7%) - not the B29 parent-class siblings above.

Nearest by grant volume

B82Y 23,042 B29L 23,135 C08F 23,159 H10N 23,338

Nearest by lead-assignee share

G16H 2.7% A23P 2.7% F28F 2.7% E03F 2.7%

Questions about B29K

Which company holds the most patents in B29K?
The Boeing Company leads B29K with 618 patents (2.7% of the subclass). By PatentsView assignee type, foreign corporations account for 54% of class grants.
Which B29K assignees grew fastest recently?
Among assignees with ≥5 grants in B29K, Solventum Intellectual Properties Company shows the highest company-wide grant multiple (88x: 0 grants in 2019–2021 → 88 in 2022–2024) while holding 6 patents in this subclass. Growth is company-wide, not class-only.
How does B29K compare inside parent class B29?
Inside B29 (Working OF PLASTICS; Working OF Substances IN A Plastic State IN General), B29K ranks #3 of 5 subclasses by grant volume and holds 19.7% of the parent class total. The largest sibling is B29C (53,431 grants).

What to do with this data

B29K in context - here's where to go next.

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

Methodology - B29K figures are USPTO PatentsView granted-utility totals for this subclass (22,850 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.