Where does Stackpole International Engineered Products, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Stackpole International Engineered Products, Ltd. ranks #20,454 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Stackpole International Engineered Products, Ltd. hold?

Stackpole International Engineered Products, Ltd. holds 14 US utility patents granted between 2015 and 2023, spanning 8 technology areas.

What is Stackpole International Engineered Products, Ltd.'s Innovation Score?

Stackpole International Engineered Products, Ltd. has an Innovation Score of 34.7 out of 100 (49th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Stackpole International Engineered Products, Ltd.'s patent grant rate increasing or decreasing?

Stackpole International Engineered Products, Ltd.'s recent grant velocity is +33% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Stackpole International Engineered Products, Ltd.'s patents?

Stackpole International Engineered Products, Ltd.'s patents average 18.2 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Stackpole International Engineered Products, Ltd.

Q: What technology areas does Stackpole International Engineered Products, Ltd. focus on?

Stackpole International Engineered Products, Ltd.'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 14 patents, ranking #46 of 587 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Q: How is the Stackpole International Engineered Products, 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.

USPTO PatentsView assignee record - 14 granted patents across 8 technology areas, recorded in grant years 2015–2023. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Stackpole ranks #20,454 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 8 technology areas.

#20,454
of 49,997 US assignees by volume: 49th percentile
by Innovation Score (34.7/100): 18.2
avg claims per patent: +33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R20454 · Foreign Corporation #20,454 · 14 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MICRO 14 grants
MID-PACK #20,454/49,997
PHOTO-FINISH Sovereign Peak…
CPC-NARROW F04C · 8 areas
INNOV-THIN 34.7/100
CLAIMS-RICH 18.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +33% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Sovereign Peak Ventures, LLC (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Stackpole’s 34.7 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 9.4 pts (27%) Velocity 4.4 pts (13%) Breadth 10.0 pts (29%) Claim depth 10.9 pts (31%)

Qualcomm Incorporated · highest

85
Stackpole Internatio… · this assignee

35
3D Lighting… · lowest

7

What this shows Stackpole's Innovation Score is 34.7/100 (49th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Stackpole?

Each dot is one of Stackpole’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Stackpole’s own 18.2 claims/patent is ABOVE the 14.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Stackpole vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Stackpole's grants concentrate

Stackpole International Engineered Products, Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 100% of grants classified under F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps). Peak complete grant year is 2020 (3 grants) versus a trough of 1 in 2015. By volume, Stackpole sits between Sovereign Peak Ventures, LLC and Sterno Home Inc..

Stackpole's three-year grant acceleration

Stackpole International Engineered Products, Ltd. shows 4 grants in 2022–2024 against only 6 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Sovereign Peak Ve…

14
Spears Manufactur…

14
Specialty Surgica…

14
Spoked Solutions

14
Star Sky Motor

14
Steerlife India P…

14
Stephenson

14
Sterno Home

14
Stackpole Interna… ◀

14

What this shows Stackpole holds 14 patents at rank #20,461, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Stackpole

By rank, the assignees closest to #20,461 in granted patent volume.

Leaders in F04C (Rotary-piston)

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

Stackpole's Innovation Score vs. every tracked assignee

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

35 49th percentile higher than 49% of 49,997 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 · 2015–2023

Grants by year

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

View data table

Stackpole International Engineered Products, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	7.1%
2017	2	14.3%
2018	1	7.1%
2019	2	14.3%
2020	3	21.4%
2021	1	7.1%
2022	3	21.4%
2023	1	7.1%

Which technologies does Stackpole International Engineered Products, Ltd. patent most?

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 14

F01M - Lubricating OF Machines OR Engines IN GENERAL; Lubricating Internal Combustion ENGINES; Crankcase Ventilating 5

F01C - Rotary-piston OR Oscillating-piston Machines OR Engines 3

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 1

G01P - Measuring Linear OR Angular Speed, Acceleration, Deceleration, OR SHOCK; Indicating Presence, Absence, OR Direction, OF Movement 1

F16H - Gearing 1

F04D - Non-positive-displacement Pumps 1

F16N - Lubricating 1

Top 8 of 8 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Stackpole International Engineered Products, Ltd.'s patent record in context - here's where to go next.

Stackpole International Engineered Products, Ltd.'s lead technology class is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps), 100% of its portfolio - see every assignee active in that class. Explore F04C
Ranked #20,454 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Stackpole International Engineered Products, Ltd. against Sovereign Peak Ventures, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.7/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

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

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

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 by PlainPatent, US Patent Intelligence Editorial Process · 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.