PlainPatent

CPC technology class · F16

F16K - Valves

Valves; taps; cocks; actuating-floats; devices for venting or aerating. 17,624 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

17,624
US patents granted
#2/14
in F16
12.8%
F16 class share
+8%
5-yr velocity

The verdict

According to USPTO PatentsView, Valves ranks #107 of 670 CPC technology areas - 17,624 US patents granted since 2015, with recorded grant volume up 8% over five years.

#107
of 670 CPC technology areas
17,624
US patents granted, 2015–2025
Hamilton Sundstrand (Hsc)
leading assignee (309)
+8%
grant velocity, last 5 yrs

How F16K's grant cadence moved

Between 2020–2024, F16K recorded 8,330 grants versus 7,705 in 2015–2019 (+8% equal-window velocity). Across complete years, output peaked in 2019 at 1,950 grants and bottomed in 2015 at 1,255 (+55% peak-over-trough). Lead assignee Hamilton Sundstrand Corporation (HSC) holds 1.8% of the class ; the top three share 4.4%.

Leaderboard read

F16K concentration, lead at 1.8%

Hamilton Sundstrand Corporation (HSC) leads this historical grant record at 1.8% of F16K - us corporation assignees hold 50% of class grants (5,523 of 10,974). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
1.8%

309 of 17,624 grants

Top three share
4.4%

of the class's recorded grants

Lead over #2
0

more grants than Fisher Controls International LLC

Where F16K sits inside F16

Among 14 subclasses in F16 (Engineering Elements AND UNITS; General Measures FOR Producing AND Maintaining Effective Functioning OF Machines OR INSTALLATIONS; Thermal Insulation IN General), F16K ranks #2 and holds 12.8% of the parent class's 137,714 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

F16H 27,860 F16L 16,791 F16D 15,330 F16B 14,787 F16C 14,627 F16F 10,113 F16M 8,559 F16J 7,442

Rising assignees active in F16K

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 HL Mando Corporation 212x 0 → 212 company-wide · 9 in F16K
  2. #2 Danfoss Power Solutions II Technology A/S 35x 0 → 35 company-wide · 7 in F16K
  3. #3 Flowserve Pte. Ltd. 25x 0 → 25 company-wide · 14 in F16K
  4. #4 Zhejiang Dunan Artificial Environment Co., Ltd. 23x 0 → 23 company-wide · 23 in F16K
  5. #5 Cana Technology, Inc. 21x 0 → 21 company-wide · 8 in F16K

F16K grants by year, peak 2019 (1,950)

US utility-patent grants per year in F16K, 2015–2025 - recent five years are up 8% versus 2015–2019.

5001,0001,5002,000 20152016201720182019202020212022202320242025 1,031

Who leads F16K?

The 12 most active assignees in VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating - wider bars mean more grants

patents

What this shows Hamilton Sundstrand… is the most active filer in F16K, holding 309 of the 17,624 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 F16K
Rank Company Patents in F16K
#1 Hamilton Sundstrand Corporation (HSC) 309
#2 Fisher Controls International LLC 309
#3 Fujikin Incorporated 153
#4 Cameron International Corporation 136
#5 Emerson Process Management Regulator Technologies, Inc. 129
#6 Halliburton Energy Services, Inc. 123
#7 Mueller International, LLC 110
#8 Kohler Co. 103
#9 SMC Corporation 101
#10 Parker-Hannifin Corporation 98
#11 Eagle Industry Co., Ltd. 92
#12 Illinois Tool Works Inc. 89
#13 BorgWarner Inc. 87
#14 Goodrich Corporation 82
#15 Dresser, LLC 80
#16 Schaeffler Technologies AG & Co. KG 78
#17 VAT Holding AG 70
#18 Continental Automotive GMBH 66
#19 Samson Aktiengesellschaft 62
#20 KYB Corporation 59

Footprint here vs. claim strategy

Each dot is a leading F16K 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 F16K assignees by class footprint. Bubble size = patents in F16K. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 05101520 50100150200250300350 Patents in F16K Avg claims / patent (company-wide) Hamilton Sundstrand…Fisher Controls…Fujikin IncorporatedCameron InternationalEmerson Process…Halliburton Energy…Mueller InternationalKohlerSmcParker-hannifinEagle IndustryIllinois Tool WorksBorgwarnerGoodrich
Top 14 F16K assignees by class footprint. Bubble size = patents in F16K. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near F16K's 17,624-grant footprint

Nationwide nearest neighbors for F16K (#107 of 670 by volume ; lead share 1.8%) - not the F16 parent-class siblings above.

Nearest by grant volume

F21Y 17,865 B65G 17,344 C12Y 17,214 B64C 17,186

Nearest by lead-assignee share

C01B 1.8% B29B 1.8% E04C 1.7% A23B 1.7%

Questions about F16K

Which company holds the most patents in F16K?
Hamilton Sundstrand Corporation (HSC) leads F16K with 309 patents (1.8% of the subclass). By PatentsView assignee type, us corporations account for 50% of class grants.
Which F16K assignees grew fastest recently?
Among assignees with ≥5 grants in F16K, HL Mando Corporation shows the highest company-wide grant multiple (212x: 0 grants in 2019–2021 → 212 in 2022–2024) while holding 9 patents in this subclass. Growth is company-wide, not class-only.
How does F16K compare inside parent class F16?
Inside F16 (Engineering Elements AND UNITS; General Measures FOR Producing AND Maintaining Effective Functioning OF Machines OR INSTALLATIONS; Thermal Insulation IN General), F16K ranks #2 of 14 subclasses by grant volume and holds 12.8% of the parent class total. The largest sibling is F16H (27,860 grants).

What to do with this data

F16K in context - here's where to go next.

  • Hamilton Sundstrand Corporation (HSC) leads F16K with 309 grants in this class. See full portfolio
  • F16K ranks #107 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class F16, the largest sibling subclass is F16H with 27,860 grants. Explore F16H

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

Methodology - F16K figures are USPTO PatentsView granted-utility totals for this subclass (17,624 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.