USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Anest Iwata Corporation

USPTO PatentsView assignee record - 38 granted patents across 16 technology areas, active 2015–2022. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F04C (ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

4.5

Avg claims per patent

-94%

5-year filing velocity

The verdict

Anest holds 38 US patents across 16 technology areas, rank #8,329 of 50,000 tracked assignees.

#8,329
of 50,000 US assignees by volume: Top 64%
by Innovation Score (30.9/100): 4.5
avg claims per patent: -94%
filing velocity, last 5 yrs

Portfolio overview

Anest Iwata Corporation has been granted 38 US utility patents between 2015 and 2022, placing Anest Iwata Corporation at rank #8,329 across all assignees tracked by PlainPatent. This portfolio spans 16 distinct Cooperative Patent Classification (CPC) subclasses, averaging 4.5 claims per patent with primary concentration in F04C (ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS). As a Foreign Corporation, Anest Iwata Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Anest sits between ATOP S.p.a. (38 patents, rank #8,325) and Banner LIFE Sciences Llc (38 patents, rank #8,333) - the closest US assignees by grant volume. The composite Innovation Score of 30.9/100 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 2 grants, compared with 36 in the 2015–2019 window, a -94% 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. Anest Iwata Corporation's 4.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 16 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Anest Iwata Corporation against peers pursuing similar technology classes.

ATOP S p A

38
ATT Southern

38
Auctane

38
All Purpose Netwo…

38
Apotex

38
Aqua-leisure Indu…

38
Aurea Software

38
Banner LIFE Scien…

38
Anest Iwata ◀

38

What this shows Anest holds 38 patents at rank #8,329, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Anest

By rank, the assignees closest to #8,329 in granted patent volume.

Leaders in F04C (Rotary-piston)

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

Anest's Innovation Score vs. every tracked assignee

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

31 Top 64% higher than 36% 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

Anest Iwata Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	10.5%
2016	15	39.5%
2017	7	18.4%
2018	6	15.8%
2019	4	10.5%
2020	1	2.6%
2022	1	2.6%

Which technologies does Anest Iwata Corporation patent most?

F04C - ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS 13

F01C - ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 10

B05B - SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 9

B05D - PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 2

F01K - STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES 2

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 1

A61M - DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR 1

A61G - TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS ; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES 1

F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 1

G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 1

F03C - POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 1

F05B - INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G 1

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 1

F16J - PISTONS ; CYLINDERS; SEALINGS 1

F04B - POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 1

Top 15 of 16 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#8,329

Across all tracked assignees

Innovation Score

30.9 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 Anest Iwata Corporation hold?

Anest Iwata Corporation holds 38 US granted patents filed between 2015 and 2022, spanning 16 technology areas.

What is Anest Iwata Corporation's Innovation Score?

Anest Iwata Corporation has an Innovation Score of 30.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Anest Iwata Corporation focus on?

Anest Iwata Corporation's top technology area is F04C (ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS) with 13 patents. The company has filed patents in 16 CPC subclasses total.

Is Anest Iwata Corporation's patent filing rate increasing or decreasing?

Anest Iwata Corporation's recent filing velocity is -94% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Anest Iwata Corporation's patents?

Anest Iwata Corporation's patents average 4.5 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Anest Iwata Corporation 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

Anest's 38 grants land it in the top 64% 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 - Anest ranks #8,329 of 50,000. Top 50 holders
Most of this portfolio concentrates in F04C - see who else leads that technology area. F04C 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.