PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Charles Austen Pumps Ltd.

USPTO PatentsView assignee record - 5 granted patents across 4 technology areas, recorded in grant years 2019–2024. 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: F04B (Positive-displacement Machines FOR LIQUIDS; Pumps).

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The verdict

According to USPTO PatentsView, Charles ranks #45,603 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 4 technology areas.

#45,603
of 49,997 US assignees by volume
29th percentile
by Innovation Score (29.0/100)
9.6
avg claims per patent
+50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R45603 · Foreign Corporation #45,603 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

  • GRANTS-MICRO 5 grants
  • BOTTOM-DECILE #45,603/49,997
  • PHOTO-FINISH Changzheng Engineering
  • CPC-NARROW F04B · 4 areas
  • INNOV-THIN 29.0/100
  • CLAIMS-PAR 9.6 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-SURGE +50% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Changzheng Engineering Co., Ltd. (±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 Charles’s 29.0 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Innovation-score neighbourhood around Charles

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

What this shows Charles's Innovation Score is 29.0/100 (29th percentile 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.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

Does more volume mean deeper claims for Charles?

Each dot is one of Charles’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). Charles’s own 9.6 claims/patent is at or below the 13.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Charles vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 4.95.05.055.05.05.1 0510152025 Granted patents (volume) Avg claims / patent Changzheng Engineering Co., Ltd. - 5, 13.2Changzheng Engine…Changzhou Kaisen Photoelectricity Co., Ltd. - 5, 6.2Changzhou Kaisen…Chaperone Therapeutics, Inc. - 5, 1.4Chaperone Therape…Charabot - 5, 19CharabotCharles Viancin Group - 5, 1Charles Viancin G…Checkmate Limited - 5, 17.6CheckmateCheckmate Pharmaceuticals, Inc. - 5, 16.2Checkmate Pharmac…Checkpoint Technologies LLC - 5, 20.6CheckpointCharles Austen Pumps Ltd. - 5, 9.6Charles Austen Pu…
Charles vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Charles's grants concentrate

Charles Austen Pumps Ltd. is a focused PatentsView assignee: 4 CPC subclasses with 60% of grants classified under F04B (Positive-displacement Machines FOR LIQUIDS; Pumps). Peak complete grant year is 2019 (2 grants) versus a trough of 1 in 2022. By volume, Charles sits between Changzheng Engineering Co., Ltd. and Checkpoint Technologies LLC.

Charles's three-year grant acceleration

Charles Austen Pumps Ltd. 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.

Who files at Charles's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Charles holds 5 patents at rank #45,508, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Charles

By rank, the assignees closest to #45,508 in granted patent volume.

Leaders in F04B (Positive-displacement Machines FOR Liquids)

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

Charles's Innovation Score vs. every tracked assignee

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

29 29th percentile higher than 29% of 49,997 US assignees

This assignee 0 100 every tracked assignee, bucketed by value

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

0.511.522.5 2019202220232024 1
USPTO utility patent grants by year · 2019–2024

Grants by year

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

View data table
Charles Austen Pumps Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2019 2 40.0%
2022 1 20.0%
2023 1 20.0%
2024 1 20.0%

Which technologies does Charles Austen Pumps Ltd. patent most?

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

Charles Austen Pumps Ltd.'s patent record in context - here's where to go next.

  • Charles Austen Pumps Ltd.'s lead technology class is F04B (Positive-displacement Machines FOR LIQUIDS; Pumps), 60% of its portfolio - see every assignee active in that class. Explore F04B
  • Ranked #45,603 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Charles Austen Pumps Ltd. against Changzheng Engineering Co., Ltd., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 29.0/100 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

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.