Where does Federal Signal Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Federal Signal Corporation ranks #5,358 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 Federal Signal Corporation hold?

Federal Signal Corporation holds 64 US utility patents granted 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 (top 11% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Federal Signal Corporation's recent grant velocity is +0% 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 Federal Signal Corporation's patents?

Federal Signal Corporation's patents average 15.3 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 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.

USPTO 2015–2025 USPTO PatentsView US Corporation

Federal Signal Corporation

Q: 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, ranking #79 of 750 assignees active in that subclass. Grants appear in 61 CPC subclasses total.

USPTO PatentsView assignee record - 64 granted patents across 61 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: B60Q (Arrangement OF Signalling OR Lighting Devices, THE Mounting OR Supporting Thereof OR Circuits Therefor, FOR Vehicles IN General).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Federal ranks #5,358 of 49,997 tracked US assignees by granted-patent volume, with 64 patents across 61 technology areas.

#5,358
of 49,997 US assignees by volume: Top 11%
by Innovation Score (51.7/100): 15.3
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5358 · US Corporation #5,358 · 64 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 64 grants
UPPER-Q #5,358/49,997
PHOTO-FINISH Danco
CPC-WIDE B60Q · 61 areas
INNOV-PAR 51.7/100
CLAIMS-RICH 15.3 claims/avg
TYPE-USCORP US Corporation
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Danco, 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 Federal’s 51.7 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 14.4 pts (28%) Velocity 3.1 pts (6%) Breadth 25.0 pts (48%) Claim depth 9.2 pts (18%)

Qualcomm Incorporated · highest

85
Aleddra · near

52
Berkeley Lights · near

52
Entropic Communicati… · near

52
Federal Signal · this assignee

52
Synamedia · near

52
3D Lighting… · lowest

7

What this shows Federal's Innovation Score is 51.7/100 (top 11% 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 Federal?

Each dot is one of Federal’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). Federal’s own 15.3 claims/patent is ABOVE the 10.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

How Federal's grant cadence moved

Between 2020–2024, Federal Signal Corporation received 31 grants versus 31 in 2015–2019 (+0% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2020 at 15 grants and bottomed in 2023 at 3. Lead class B60Q accounts for 25% of the portfolio across 61 subclasses. Volume neighbours: Dowa Metaltech Co., Ltd. (#5,355) and Hakko Corporation (#5,363).

Federal's three-year grant acceleration

From 2019–2021 to 2022–2024, Federal Signal Corporation moved from 26 to 12 grants (0.46x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Federal, neither rank-band nor same-CPC leaders (those blocks stay above). In B60Q (Arrangement OF Signalling OR Lighting Devices), Federal ranks #79 of 750 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (52 here).

Synamedia Limited 52 Entropic Communications, LLC 52 Berkeley Lights, Inc. 52 Aleddra Inc. 52

Similar claim depth

Nearest assignees by average claims per patent (15.3 here).

Saes Getters S.P.A. 15.3 avg Varta Microbattery GMBH 15.3 avg BEN Gurion University OF THE Negev Research AND Development Authority 15.3 avg Medicrea International 15.3 avg

Federal's Innovation Score vs. every tracked assignee

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

52 Top 11% higher than 89% 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

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%
2025partial year	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

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

Federal Signal Corporation's patent record in context - here's where to go next.

Federal Signal Corporation's lead technology class is B60Q (Arrangement OF Signalling OR Lighting Devices, THE Mounting OR Supporting Thereof OR Circuits Therefor, FOR Vehicles IN General), 25% of its portfolio - see every assignee active in that class. Explore B60Q
Ranked #5,358 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Federal Signal Corporation against Dowa Metaltech Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 51.7/100 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.