PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Microfilter Co., Ltd

USPTO PatentsView assignee record - 14 granted patents across 4 technology areas, recorded in grant years 2016–2024. 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: B01D (Separation).

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The verdict

According to USPTO PatentsView, Microfilter ranks #20,083 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 4 technology areas.

#20,083
of 49,997 US assignees by volume
21st percentile
by Innovation Score (26.6/100)
5.8
avg claims per patent
-44%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R20083 · Foreign Corporation #20,083 · 14 grants

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

  • GRANTS-MICRO 14 grants
  • MID-PACK #20,083/49,997
  • PHOTO-FINISH Michelman
  • CPC-NARROW B01D · 4 areas
  • INNOV-THIN 26.6/100
  • CLAIMS-SPARSE 5.8 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-DROP -44% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Michelman, 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 Microfilter’s 26.6 Innovation Score adds up

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

Innovation-score neighbourhood around Microfilter

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

score

What this shows Microfilter's Innovation Score is 26.6/100 (21st 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 Microfilter?

Each dot is one of Microfilter’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). Microfilter’s own 5.8 claims/patent is at or below the 16.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Microfilter 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 13.913.91414.1 051015202530 Granted patents (volume) Avg claims / patent MiNA Therapeutics Limited - 14, 16.57Mina TherapeuticsMichelman, Inc. - 14, 20MichelmanMichigan Vehicle Solutions - 14, 2.64Michigan Vehicle…Micrel Medical Devices S.A. - 14, 22.5Micrel Medical De…Microline Surgical, Inc. - 14, 21.29Microline SurgicalMidwwest Energy Emissions Corp. - 14, 24Midwwest Energy E…Miller Weldmaster Corporation - 14, 16.14Miller WeldmasterMincon International Limited - 14, 15.93Mincon Internatio…Microfilter Co., Ltd - 14, 5.79Microfilter
Microfilter vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Microfilter's grants concentrate

Microfilter Co., Ltd is a focused PatentsView assignee: 4 CPC subclasses with 50% of grants classified under B01D (Separation). Peak complete grant year is 2018 (5 grants) versus a trough of 1 in 2017. By volume, Microfilter sits between MiNA Therapeutics Limited and Mincon International Limited.

Microfilter's three-year grant acceleration

Microfilter Co., Ltd shows 3 grants in 2022–2024 against only 3 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 Microfilter's volume?

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

patents

What this shows Microfilter holds 14 patents at rank #20,100, 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 Microfilter

By rank, the assignees closest to #20,100 in granted patent volume.

Leaders in B01D (Separation)

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

Microfilter's Innovation Score vs. every tracked assignee

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

27 21st percentile higher than 21% 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

0123456 201620172018201920202021202220232024 1
USPTO utility patent grants by year · 2016–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table
Microfilter Co., Ltd patent grants by year, 2015–2025
Year Patents Granted Share of Period
2016 2 14.3%
2017 1 7.1%
2018 5 35.7%
2019 1 7.1%
2020 1 7.1%
2021 1 7.1%
2022 1 7.1%
2023 1 7.1%
2024 1 7.1%

Which technologies does Microfilter Co., 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

Microfilter Co., Ltd's patent record in context - here's where to go next.

  • Microfilter Co., Ltd's lead technology class is B01D (Separation), 50% of its portfolio - see every assignee active in that class. Explore B01D
  • Ranked #20,083 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Microfilter Co., Ltd against MiNA Therapeutics Limited, an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 26.6/100 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

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.