USPTO 2015–2025 USPTO PatentsView Foreign Corporation

PIPL Limited

USPTO PatentsView assignee record - 9 granted patents across 18 technology areas, active 2021–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F01D (NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

17.9

Avg claims per patent

5-year filing velocity

The verdict

PIPL holds 9 US patents across 18 technology areas, rank #29,727 of 50,000 tracked assignees.

#29,727
of 50,000 US assignees by volume: Top 9%
by Innovation Score (53.7/100): 17.9
avg claims per patent

Portfolio overview

PIPL Limited has been granted 9 US utility patents between 2021 and 2024, placing PIPL Limited at rank #29,727 across all assignees tracked by PlainPatent. This portfolio spans 18 distinct Cooperative Patent Classification (CPC) subclasses, averaging 17.9 claims per patent with primary concentration in F01D (NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES). As a Foreign Corporation, PIPL Limited is one of the more focused assignees in the PatentsView dataset. By volume, PIPL sits between Pharma Foods International Co., Ltd. (9 patents, rank #29,723) and Plantarc BIO Ltd. (9 patents, rank #29,731) - the closest US assignees by grant volume. The composite Innovation Score of 53.7/100 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. Historical data spans 2021 through 2024, with 9 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. PIPL Limited's 17.9 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 18 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark PIPL Limited against peers pursuing similar technology classes.

Pharma Foods Inte…

9
Pharmain

9
PI Industries

9
Pinnacle SEED

9
Piramal Pharma

9
Pitt-ohio Express

9
Planet LABS PBC

9
Plantarc BIO

9
PIPL ◀

9

What this shows PIPL holds 9 patents at rank #29,727, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near PIPL

By rank, the assignees closest to #29,727 in granted patent volume.

Leaders in F01D (Non-positive Displacement Machines OR Engines)

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

PIPL's Innovation Score vs. every tracked assignee

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

54 Top 9% higher than 91% 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 · 2021–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

PIPL Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	1	11.1%
2022	5	55.6%
2023	2	22.2%
2024	1	11.1%

Which technologies does PIPL Limited patent most?

F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 3

F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS 3

F03H - PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR 3

B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

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

C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 2

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 2

F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS 1

H01Q - ANTENNAS, i.e. RADIO AERIALS 1

B64G - COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR 1

H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 1

G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 1

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 1

C22C - ALLOYS 1

Top 15 of 18 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Where it ranks

Overall rank by patents

#29,727

Across all tracked assignees

Innovation Score

53.7 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 PIPL Limited hold?

PIPL Limited holds 9 US granted patents filed between 2021 and 2024, spanning 18 technology areas.

What is PIPL Limited's Innovation Score?

PIPL Limited has an Innovation Score of 53.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does PIPL Limited focus on?

PIPL Limited's top technology area is F01D (NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES) with 3 patents. The company has filed patents in 18 CPC subclasses total.

Is PIPL Limited's patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for PIPL Limited.

What does claim depth mean for PIPL Limited's patents?

PIPL Limited's patents average 17.9 claims each. This falls within the standard range, providing solid legal coverage.

How is the PIPL Limited 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

PIPL's 9 grants land it in the top 9% 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 - PIPL ranks #29,727 of 50,000. Top 50 holders
Most of this portfolio concentrates in F01D - see who else leads that technology area. F01D 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.