CPC technology class · B22

B22C - Foundry Moulding

Foundry moulding. 1,672 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

1,672
US patents granted: #3/3
in B22: 8.6%
B22 class share: +1%
5-yr velocity

The verdict

According to USPTO PatentsView, Foundry Moulding ranks #389 of 670 CPC technology areas - 1,672 US patents granted since 2015, with recorded grant volume up 1% over five years.

#389
of 670 CPC technology areas: 1,672
US patents granted, 2015–2025: United
leading assignee (121): +1%
grant velocity, last 5 yrs

How B22C's grant cadence moved

Between 2020–2024, B22C recorded 756 grants versus 746 in 2015–2019 (+1% equal-window velocity). Across complete years, output peaked in 2019 at 202 grants and bottomed in 2015 at 112 (+80% peak-over-trough). Lead assignee United Technologies Corporation holds 7.2% of the class ; the top three share 14.9%.

Leaderboard read

B22C concentration, lead at 7.2%

United Technologies Corporation leads this historical grant record at 7.2% of B22C - foreign corporation assignees hold 55% of class grants (412 of 745). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 7.2%
Top three share: 14.9%
Lead over #2: 48

Where B22C sits inside B22

Among 3 subclasses in B22 (CASTING; Powder Metallurgy), B22C ranks #3 and holds 8.6% of the parent class's 19,441 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B22F 13,344 B22D 4,425

Rising assignees active in B22C

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 Topgolf Callaway Brands Corp. 144x 0 → 144 company-wide · 5 in B22C
#2 Honda Foundry Co., Ltd. 3.00x 1 → 3 company-wide · 5 in B22C
#3 Huttenes-albertus Chemische Werke Gesellschaft mit beschränkter haftung 3.00x 0 → 3 company-wide · 5 in B22C
#4 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft MIT BESCHRÄNKTER Haftung 2.00x 6 → 12 company-wide · 17 in B22C
#5 Sintokogio, Ltd. 1.72x 58 → 100 company-wide · 55 in B22C

B22C grants by year, peak 2019 (202)

US utility-patent grants per year in B22C, 2015–2025 - recent five years are up 1% versus 2015–2019.

United

121
Raytheon

73
Sintokogio

55
Safran Aircraft…

49
Ask Chemicals

30
Citic Dicastal

28
Safran

28
HÜTtenes-albertus…

17
Mikro Systems

14
Nemak B de C V

12
Foseco International

12
Taylor Made Golf

11

What this shows United is the most active filer in B22C, holding 121 of the 1,672 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 B22C
Rank	Company	Patents in B22C
#1	United Technologies Corporation	121
#2	Raytheon Technologies Corporation	73
#3	Sintokogio, Ltd.	55
#4	Safran Aircraft Engines	49
#5	ASK Chemicals GmbH	30
#6	Citic Dicastal Co., Ltd.	28
#7	Safran	28
#8	HÜTTENES-ALBERTUS Chemische Werke Gesellschaft MIT BESCHRÄNKTER Haftung	17
#9	Mikro Systems, Inc.	14
#10	Nemak, S.A.B. de C.V.	12
#11	Foseco International Limited	12
#12	Taylor Made Golf Company, Inc.	11
#13	Disa Industries A/S	9
#14	Nevis Industries LLC	8
#15	Pennsy Corporation	8
#16	ATI Properties LLC	7
#17	Chromalloy Gas Turbine LLC	7
#18	TBS Engineering Limited	7
#19	Bedloe Industries LLC	7
#20	Chemex Foundry Solutions GMBH	7

Footprint here vs. claim strategy

Each dot is a leading B22C 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 B22C assignees by class footprint. Bubble size = patents in B22C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B22C's 1,672-grant footprint

Nationwide nearest neighbors for B22C (#389 of 670 by volume ; lead share 7.2%) - not the B22 parent-class siblings above.

Nearest by grant volume

F01C 1,662 A24D 1,661 G07B 1,687 F25C 1,654

Nearest by lead-assignee share

C10J 7.3% B61L 7.3% H02G 7.2% F01M 7.2%

Questions about B22C

Which company holds the most patents in B22C?

United Technologies Corporation leads B22C with 121 patents (7.2% of the subclass). By PatentsView assignee type, foreign corporations account for 55% of class grants.

Which B22C assignees grew fastest recently?

Among assignees with ≥5 grants in B22C, Topgolf Callaway Brands Corp. shows the highest company-wide grant multiple (144x: 0 grants in 2019–2021 → 144 in 2022–2024) while holding 5 patents in this subclass. Growth is company-wide, not class-only.

How does B22C compare inside parent class B22?

Inside B22 (CASTING; Powder Metallurgy), B22C ranks #3 of 3 subclasses by grant volume and holds 8.6% of the parent class total. The largest sibling is B22F (13,344 grants).

What to do with this data

B22C in context - here's where to go next.

United Technologies Corporation leads B22C with 121 grants in this class. See full portfolio
B22C ranks #389 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B22, the largest sibling subclass is B22F with 13,344 grants. Explore B22F

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

Methodology - B22C figures are USPTO PatentsView granted-utility totals for this subclass (1,672 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.