USPTO 2015–2025 USPTO PatentsView US Corporation

Federal Signal Corporation

USPTO PatentsView assignee record - 64 granted patents across 61 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B60Q (ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

15.3

Avg claims per patent

+6%

5-year filing velocity

The verdict

Federal holds 64 US patents across 61 technology areas, rank #5,359 of 50,000 tracked assignees.

#5,359
of 50,000 US assignees by volume: Top 11%
by Innovation Score (51.7/100): 15.3
avg claims per patent: +6%
filing velocity, last 5 yrs

Portfolio overview

Federal Signal Corporation has been granted 64 US utility patents between 2015 and 2025, placing Federal Signal Corporation at rank #5,359 across all assignees tracked by PlainPatent. This portfolio spans 61 distinct Cooperative Patent Classification (CPC) subclasses, averaging 15.3 claims per patent with primary concentration in B60Q (ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL). As a US Corporation, Federal Signal Corporation is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Federal sits between DOWA Metaltech Co., Ltd. (64 patents, rank #5,355) and Hakko Corporation (64 patents, rank #5,363) - the closest US assignees by grant volume. The composite Innovation Score of 51.7/100 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. Between 2020 and 2025 the company received 33 grants, compared with 31 in the 2015–2019 window, a +6% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The US 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. Federal Signal Corporation's 15.3 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 61 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Federal Signal Corporation against peers pursuing similar technology classes.

DOWA Metaltech

64
Danco

64
FAST IP

64
Felica Networks

64
Ferro

64
Gecko Robotics

64
Haikou LILI Inves…

64
Hakko

64
Federal Signal ◀

64

What this shows Federal holds 64 patents at rank #5,359, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Federal

By rank, the assignees closest to #5,359 in granted patent volume.

Leaders in B60Q (Arrangement OF Signalling OR Lighting Devices)

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

Federal's Innovation Score vs. every tracked assignee

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

52 Top 11% higher than 89% 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 · 2015–2025

Grants by year

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

View data table

Federal Signal Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	7	10.9%
2016	6	9.4%
2017	4	6.3%
2018	7	10.9%
2019	7	10.9%
2020	15	23.4%
2021	4	6.3%
2022	6	9.4%
2023	3	4.7%
2024	3	4.7%
2025	2	3.1%

Which technologies does Federal Signal Corporation patent most?

B60Q - ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL 16

F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 12

E01H - STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING ; OR PREVENTING; FOG IN GENERAL ; CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS 12

F21S - NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS 9

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 9

B60P - VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS 8

G08B - SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 8

F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED 8

E03F - SEWERS; CESSPOOLS 7

B08B - CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 6

F21W - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS 5

F04B - POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 5

H04R - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 5

E02F - DREDGING; SOIL-SHIFTING 5

G06F - ELECTRIC DIGITAL DATA PROCESSING 4

Top 15 of 61 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Growing

Where it ranks

Overall rank by patents

#5,359

Across all tracked assignees

Innovation Score

51.7 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 Federal Signal Corporation hold?

Federal Signal Corporation holds 64 US granted patents filed between 2015 and 2025, spanning 61 technology areas.

What is Federal Signal Corporation's Innovation Score?

Federal Signal Corporation has an Innovation Score of 51.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Federal Signal Corporation focus on?

Federal Signal Corporation's top technology area is B60Q (ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL) with 16 patents. The company has filed patents in 61 CPC subclasses total.

Is Federal Signal Corporation's patent filing rate increasing or decreasing?

Federal Signal Corporation's recent filing velocity is +6% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Federal Signal Corporation's patents?

Federal Signal Corporation's patents average 15.3 claims each. This falls within the standard range, providing solid legal coverage.

How is the Federal Signal 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

Federal's 64 grants land it in the top 11% 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 - Federal ranks #5,359 of 50,000. Top 50 holders
Most of this portfolio concentrates in B60Q - see who else leads that technology area. B60Q 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.