USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Fujikin Incorporated

USPTO PatentsView assignee record - 267 granted patents across 56 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

267

Total patents granted

CPC technology areas

8.0

Avg claims per patent

+43%

5-year filing velocity

The verdict

Fujikin holds 267 US patents across 56 technology areas, rank #1,552 of 50,000 tracked assignees.

#1,552
of 50,000 US assignees by volume: Top 5%
by Innovation Score (57.5/100): 8.0
avg claims per patent: +43%
filing velocity, last 5 yrs

Portfolio overview

Fujikin Incorporated has been granted 267 US utility patents between 2015 and 2025, placing Fujikin Incorporated at rank #1,552 across all assignees tracked by PlainPatent. This portfolio spans 56 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.0 claims per patent with primary concentration in F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING). As a Foreign Corporation, Fujikin Incorporated is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Fujikin sits between Kepler Computing Inc. (268 patents, rank #1,548) and Ushio Denki Kabushiki Kaisha (267 patents, rank #1,556) - the closest US assignees by grant volume. The composite Innovation Score of 57.5/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 157 grants, compared with 110 in the 2015–2019 window, a +43% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Fujikin Incorporated's 8.0 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 56 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Fujikin Incorporated against peers pursuing similar technology classes.

Kepler Computing

268
University of Sci…

268
Azbil

267
Bombardier

267
Fujitsu TEN

267
Ignis Innovation

267
S-printing Soluti…

267
Ushio Denki

267
Fujikin Incorpora… ◀

267

What this shows Fujikin holds 267 patents at rank #1,552, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Fujikin

By rank, the assignees closest to #1,552 in granted patent volume.

Leaders in F16K (Valves)

Other assignees with the most granted patents in Fujikin's primary technology class.

Fujikin's Innovation Score vs. every tracked assignee

Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)

57 Top 5% higher than 95% of 50,000 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Fujikin Incorporated patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	21	7.9%
2016	24	9.0%
2017	21	7.9%
2018	23	8.6%
2019	21	7.9%
2020	19	7.1%
2021	33	12.4%
2022	50	18.7%
2023	17	6.4%
2024	24	9.0%
2025	14	5.2%

Which technologies does Fujikin Incorporated patent most?

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING 153

G05D - SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 84

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 57

G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME 45

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 38

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 31

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 23

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 19

F15B - SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR 15

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 14

F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 11

G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 9

G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR 8

F16J - PISTONS ; CYLINDERS; SEALINGS 7

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 7

Top 15 of 56 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#1,552

Across all tracked assignees

Innovation Score

57.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Fujikin Incorporated hold?

Fujikin Incorporated holds 267 US granted patents filed between 2015 and 2025, spanning 56 technology areas.

What is Fujikin Incorporated's Innovation Score?

Fujikin Incorporated has an Innovation Score of 57.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Fujikin Incorporated focus on?

Fujikin Incorporated's top technology area is F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING) with 153 patents. The company has filed patents in 56 CPC subclasses total.

Is Fujikin Incorporated's patent filing rate increasing or decreasing?

Fujikin Incorporated's recent filing velocity is +43% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Fujikin Incorporated's patents?

Fujikin Incorporated's patents average 8.0 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Fujikin Incorporated patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

How to use this portfolio

Fujikin's 267 grants land it in the top 5% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Fujikin ranks #1,552 of 50,000. Top 50 holders
Most of this portfolio concentrates in F16K - see who else leads that technology area. F16K leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

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. Data current as of May 2026.