Where does Tonejet Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tonejet Limited ranks #19,265 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 Tonejet Limited hold?

Tonejet Limited holds 15 US utility patents granted between 2015 and 2022, spanning 4 technology areas.

What is Tonejet Limited's Innovation Score?

Tonejet Limited has an Innovation Score of 38.2 out of 100 (top 41% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Tonejet Limited's patent grant rate increasing or decreasing?

Tonejet Limited's recent grant velocity is -50% 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 Tonejet Limited's patents?

Tonejet Limited's patents average 19.2 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.

How is the Tonejet 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

Tonejet Limited

Q: What technology areas does Tonejet Limited focus on?

Tonejet Limited's top technology area is B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors) with 15 patents, ranking #93 of 598 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

USPTO PatentsView assignee record - 15 granted patents across 4 technology areas, recorded in grant years 2015–2022. 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: B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Tonejet ranks #19,265 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 4 technology areas.

#19,265
of 49,997 US assignees by volume: Top 41%
by Innovation Score (38.2/100): 19.2
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R19265 · Foreign Corporation #19,265 · 15 grants

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

GRANTS-MICRO 15 grants
MID-PACK #19,265/49,997
PHOTO-FINISH The Wistar Institute
CPC-NARROW B41J · 4 areas
INNOV-THIN 38.2/100
CLAIMS-RICH 19.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: The Wistar Institute (±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 Tonejet’s 38.2 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 9.6 pts (25%) Velocity 10.0 pts (26%) Breadth 7.1 pts (19%) Claim depth 11.5 pts (30%)

Qualcomm Incorporated · highest

85
Tonejet · this assignee

38
3D Lighting… · lowest

7

What this shows Tonejet's Innovation Score is 38.2/100 (top 41% 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 Tonejet?

Each dot is one of Tonejet’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). Tonejet’s own 19.2 claims/patent is ABOVE the 14.6 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Tonejet's grants concentrate

Tonejet Limited is a focused PatentsView assignee: 4 CPC subclasses with 100% of grants classified under B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors). Peak complete grant year is 2016 (4 grants) versus a trough of 1 in 2015. By volume, Tonejet sits between The Wistar Institute and Trane Air Conditioning Systems (China) Co., Ltd..

Tonejet's three-year grant acceleration

Tonejet Limited shows 3 grants in 2022–2024 against only 2 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.

The Wistar Instit…

15
Therap Services

15
Therm-o-disc Inco…

15
Thompson Aero Sea…

15
Topokine Therapeu…

15
Tower Solutions

15
Traffic Control T…

15
Trane Air Conditi…

15
Tonejet ◀

15

What this shows Tonejet holds 15 patents at rank #19,271, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tonejet

By rank, the assignees closest to #19,271 in granted patent volume.

Leaders in B41J (Typewriters)

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

Tonejet's Innovation Score vs. every tracked assignee

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

38 Top 41% higher than 59% 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 · 2015–2022

Grants by year

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

View data table

Tonejet Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	6.7%
2016	4	26.7%
2017	4	26.7%
2018	1	6.7%
2020	1	6.7%
2021	1	6.7%
2022	3	20.0%

Which technologies does Tonejet Limited patent most?

B41J - TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors 15

B41F - Printing Machines OR Presses 3

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 3

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 1

Top 4 of 4 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

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

Tonejet Limited's lead technology class is B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors), 100% of its portfolio - see every assignee active in that class. Explore B41J
Ranked #19,265 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tonejet Limited against The Wistar Institute, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.2/100 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.