Where does Spirax-Sarco Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Spirax-Sarco Limited ranks #16,384 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 Spirax-Sarco Limited hold?

Spirax-Sarco Limited holds 18 US utility patents granted between 2015 and 2025, spanning 17 technology areas.

What is Spirax-Sarco Limited's Innovation Score?

Spirax-Sarco Limited has an Innovation Score of 38.6 out of 100 (top 40% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Spirax-Sarco Limited's patent grant rate increasing or decreasing?

Spirax-Sarco Limited's recent grant velocity is -58% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Spirax-Sarco Limited's patents?

Spirax-Sarco Limited's patents average 17.6 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.

How is the Spirax-Sarco 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Spirax-Sarco Limited

Q: What technology areas does Spirax-Sarco Limited focus on?

Spirax-Sarco Limited's top technology area is F16T (Steam Traps OR Like Apparatus FOR Draining-off Liquids From Enclosures Predominantly Containing Gases OR Vapours) with 6 patents, ranking #2 of 26 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

USPTO PatentsView assignee record - 18 granted patents across 17 technology areas, recorded in grant years 2015–2025. 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: F16T (Steam Traps OR Like Apparatus FOR Draining-off Liquids From Enclosures Predominantly Containing Gases OR Vapours).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Spirax-sarco ranks #16,384 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 17 technology areas.

#16,384
of 49,997 US assignees by volume: Top 40%
by Innovation Score (38.6/100): 17.6
avg claims per patent: -58%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R16384 · Foreign Corporation #16,384 · 18 grants

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

GRANTS-MICRO 18 grants
MID-PACK #16,384/49,997
PHOTO-FINISH SonicSensory
CPC-FOCUS F16T · 17 areas
INNOV-THIN 38.6/100
CLAIMS-RICH 17.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -58% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: SonicSensory, Inc. (±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 Spirax-sarco’s 38.6 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 10.2 pts (26%) Velocity 3.3 pts (9%) Breadth 14.6 pts (38%) Claim depth 10.5 pts (27%)

Qualcomm Incorporated · highest

85
Spirax-Sarco · this assignee

39
3D Lighting… · lowest

7

What this shows Spirax-sarco's Innovation Score is 38.6/100 (top 40% 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 Spirax-sarco?

Each dot is one of Spirax-sarco’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). Spirax-sarco’s own 17.6 claims/patent is ABOVE the 15.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Spirax-sarco's grants concentrate

Spirax-Sarco Limited is a focused PatentsView assignee: 17 CPC subclasses with 33.3% of grants classified under F16T (Steam Traps OR Like Apparatus FOR Draining-off Liquids From Enclosures Predominantly Containing Gases OR Vapours). Peak complete grant year is 2015 (5 grants) versus a trough of 1 in 2016. By volume, Spirax-sarco sits between SonicSensory, Inc. and Starry, Inc..

Spirax-sarco's three-year grant acceleration

Spirax-Sarco Limited shows 2 grants in 2022–2024 against only 4 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.

Sonicsensory

18
Southern Spine

18
Specialty Granule…

18
Spike's Tactical

18
Springs Window Fa…

18
Standex Internati…

18
Starline Global

18
Starry

18
Spirax-sarco ◀

18

What this shows Spirax-Sarco holds 18 patents at rank #16,391, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Spirax-Sarco

By rank, the assignees closest to #16,391 in granted patent volume.

Leaders in F16T (Steam Traps OR Like Apparatus FOR Draining-off Liquids Fr…)

Other assignees with the most granted patents in Spirax-Sarco's primary technology class.

Spirax-sarco's Innovation Score vs. every tracked assignee

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

39 Top 40% higher than 60% 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 · 2015–2025

Grants by year

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

View data table

Spirax-Sarco Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	27.8%
2016	1	5.6%
2017	3	16.7%
2018	2	11.1%
2019	1	5.6%
2020	1	5.6%
2021	2	11.1%
2024	2	11.1%
2025partial year	1	5.6%

Which technologies does Spirax-Sarco Limited patent most?

F16T - Steam Traps OR Like Apparatus FOR Draining-off Liquids From Enclosures Predominantly Containing Gases OR Vapours 6

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 6

F01K - Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles 3

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 3

G06F - Electric Digital Data Processing 2

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 2

F22B - Methods OF Steam GENERATION; Steam Boilers 2

A21B - Bakers' OVENS; Machines OR Equipment FOR Baking 2

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 1

B01D - Separation 1

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 1

F24C - Domestic Stoves OR Ranges ; Details OF Domestic Stoves OR Ranges, OF General Application 1

A23L - Foods, Foodstuffs OR Non-alcoholic Beverages, NOT Otherwise Provided FOR; Preparation OR Treatment Thereof 1

A23V - Indexing Scheme Relating TO Foods, Foodstuffs OR Non-alcoholic Beverages AND Lactic OR Propionic Acid Bacteria Used IN Foodstuffs OR Food Preparation 1

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 1

Top 15 of 17 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

Spirax-Sarco Limited's patent record in context - here's where to go next.

Spirax-Sarco Limited's lead technology class is F16T (Steam Traps OR Like Apparatus FOR Draining-off Liquids From Enclosures Predominantly Containing Gases OR Vapours), 33.3% of its portfolio - see every assignee active in that class. Explore F16T
Ranked #16,384 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Spirax-Sarco Limited against SonicSensory, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.6/100 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.