Where does Foster Electric Company, Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Foster Electric Company, Limited ranks #9,258 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 Foster Electric Company, Limited hold?

Foster Electric Company, Limited holds 34 US utility patents granted between 2015 and 2025, spanning 16 technology areas.

What is Foster Electric Company, Limited's Innovation Score?

Foster Electric Company, Limited has an Innovation Score of 46.6 out of 100 (top 20% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Foster Electric Company, Limited's patent grant rate increasing or decreasing?

Foster Electric Company, Limited's recent grant velocity is +100% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Foster Electric Company, Limited's patents?

Foster Electric Company, Limited's patents average 7.0 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 Foster Electric Company, 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

Foster Electric Company, Limited

Q: What technology areas does Foster Electric Company, Limited focus on?

Foster Electric Company, Limited's top technology area is H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems) with 17 patents, ranking #158 of 1,513 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 34 granted patents across 16 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: H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Foster ranks #9,258 of 49,997 tracked US assignees by granted-patent volume, with 34 patents across 16 technology areas.

#9,258
of 49,997 US assignees by volume: Top 20%
by Innovation Score (46.6/100): 7.0
avg claims per patent: +100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9258 · Foreign Corporation #9,258 · 34 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 34 grants
UPPER-Q #9,258/49,997
PHOTO-FINISH FAM
CPC-FOCUS H04R · 16 areas
INNOV-PAR 46.6/100
CLAIMS-SPARSE 7.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: FAM (±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 Foster’s 46.6 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 12.3 pts (26%) Velocity 16.0 pts (34%) Breadth 14.1 pts (30%) Claim depth 4.2 pts (9%)

Qualcomm Incorporated · highest

85
Valeda · near

47
Cybersonics · near

47
Foster Electric · this assignee

47
Jasco Products · near

47
Pictometry Internati… · near

47
3D Lighting… · lowest

7

What this shows Foster's Innovation Score is 46.6/100 (top 20% 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 Foster?

Each dot is one of Foster’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). Foster’s own 7.0 claims/patent is at or below the 9.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Foster's grants concentrate

Foster Electric Company, Limited is a focused PatentsView assignee: 16 CPC subclasses with 50% of grants classified under H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems). Peak complete grant year is 2024 (6 grants) versus a trough of 1 in 2015. By volume, Foster sits between FAM and Fiskars Oyj Abp.

Foster's three-year grant acceleration

Foster Electric Company, Limited shows 12 grants in 2022–2024 against only 5 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.

FAM

34
FK Irons

34
Flowco Production…

34
Flytech Technology

34
Free-free Industr…

34
Fuding Precision…

34
Fujian Xihe Sanit…

34
Fiskars Oyj Abp

34
Foster Electric ◀

34

What this shows Foster holds 34 patents at rank #9,256, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Foster

By rank, the assignees closest to #9,256 in granted patent volume.

Leaders in H04R (Loudspeakers)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Foster, neither rank-band nor same-CPC leaders (those blocks stay above). In H04R (Loudspeakers), Foster ranks #158 of 1,513 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (47 here).

Jasco Products Company LLC 47 Pictometry International Corp. 47 Cybersonics, Inc. 47 Valeda Company, LLC 47

Foster's Innovation Score vs. every tracked assignee

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

47 Top 20% higher than 80% 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

Foster Electric Company, Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	2.9%
2016	3	8.8%
2017	1	2.9%
2018	2	5.9%
2019	1	2.9%
2020	2	5.9%
2021	2	5.9%
2022	3	8.8%
2023	3	8.8%
2024	6	17.6%
2025partial year	10	29.4%

Which technologies does Foster Electric Company, Limited patent most?

H04R - Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems 17

B06B - Methods OR Apparatus FOR Generating OR Transmitting Mechanical Vibrations OF Infrasonic, Sonic, OR Ultrasonic Frequency, ; e.g.; FOR Performing Mechanical Work IN General 7

H02K - Dynamo-electric Machines 6

H01H - Electric SWITCHES; RELAYS; SELECTORS; Emergency Protective Devices 3

G06F - Electric Digital Data Processing 3

G10K - Sound-producing DEVICES; Methods OR Devices FOR Protecting Against, OR FOR Damping, Noise OR Other Acoustic Waves IN GENERAL; Acoustics NOT Otherwise Provided FOR 2

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 2

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 1

B60H - Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles 1

F04D - Non-positive-displacement Pumps 1

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 1

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 1

H03K - Pulse Technique 1

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 1

H04M - Telephonic Communication 1

Top 15 of 16 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

Foster Electric Company, Limited's patent record in context - here's where to go next.

Foster Electric Company, Limited's lead technology class is H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems), 50% of its portfolio - see every assignee active in that class. Explore H04R
Ranked #9,258 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Foster Electric Company, Limited against FAM, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 46.6/100 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.