USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nittan Valve Co., Ltd.

USPTO PatentsView assignee record - 56 granted patents across 42 technology areas, active 2015–2022. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F01L (CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

7.2

Avg claims per patent

-76%

5-year filing velocity

The verdict

Nittan holds 56 US patents across 42 technology areas, rank #6,062 of 50,000 tracked assignees.

#6,062
of 50,000 US assignees by volume: Top 29%
by Innovation Score (42.9/100): 7.2
avg claims per patent: -76%
filing velocity, last 5 yrs

Portfolio overview

Nittan Valve Co., Ltd. has been granted 56 US utility patents between 2015 and 2022, placing Nittan Valve Co., Ltd. at rank #6,062 across all assignees tracked by PlainPatent. This portfolio spans 42 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.2 claims per patent with primary concentration in F01L (CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES). As a Foreign Corporation, Nittan Valve Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Nittan sits between Moskowitz Family Llc (56 patents, rank #6,058) and Respivert Ltd. (56 patents, rank #6,066) - the closest US assignees by grant volume. The composite Innovation Score of 42.9/100 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 11 grants, compared with 45 in the 2015–2019 window, a -76% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Nittan Valve Co., Ltd.'s 7.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 42 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nittan Valve Co., Ltd. against peers pursuing similar technology classes.

Moskowitz Family

56
Movidius

56
Mycronic AB

56
Nippon Steel & Su…

56
Nomis

56
Otics

56
Qualcomm Innovati…

56
Respivert

56
Nittan Valve ◀

56

What this shows Nittan holds 56 patents at rank #6,062, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nittan

By rank, the assignees closest to #6,062 in granted patent volume.

Leaders in F01L (Cyclically Operating Valves FOR Machines OR Engines)

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

Nittan's Innovation Score vs. every tracked assignee

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

43 Top 29% higher than 71% 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 · 2015–2022

Grants by year

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

View data table

Nittan Valve Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	14	25.0%
2016	10	17.9%
2017	10	17.9%
2018	2	3.6%
2019	9	16.1%
2020	5	8.9%
2021	2	3.6%
2022	4	7.1%

Which technologies does Nittan Valve Co., Ltd. patent most?

F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 42

B21K - MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS 18

B23P - METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 16

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 12

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING 10

B21J - FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES 6

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 6

C22C - ALLOYS 6

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 5

C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING 3

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 3

B21C - MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL 3

B21H - MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS 2

B23B - TURNING; BORING 2

C22B - PRODUCTION AND REFINING OF METALS ; PRETREATMENT OF RAW MATERIALS 2

Top 15 of 42 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#6,062

Across all tracked assignees

Innovation Score

42.9 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 Nittan Valve Co., Ltd. hold?

Nittan Valve Co., Ltd. holds 56 US granted patents filed between 2015 and 2022, spanning 42 technology areas.

What is Nittan Valve Co., Ltd.'s Innovation Score?

Nittan Valve Co., Ltd. has an Innovation Score of 42.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nittan Valve Co., Ltd. focus on?

Nittan Valve Co., Ltd.'s top technology area is F01L (CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES) with 42 patents. The company has filed patents in 42 CPC subclasses total.

Is Nittan Valve Co., Ltd.'s patent filing rate increasing or decreasing?

Nittan Valve Co., Ltd.'s recent filing velocity is -76% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Nittan Valve Co., Ltd.'s patents?

Nittan Valve Co., Ltd.'s patents average 7.2 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Nittan Valve Co., Ltd. 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

Nittan's 56 grants land it in the top 29% 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 - Nittan ranks #6,062 of 50,000. Top 50 holders
Most of this portfolio concentrates in F01L - see who else leads that technology area. F01L 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.