PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Senju Sprinkler Co., Ltd.

USPTO PatentsView assignee record - 36 granted patents across 7 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: A62C (Fire-fighting).

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The verdict

According to USPTO PatentsView, Senju ranks #8,917 of 49,997 tracked US assignees by granted-patent volume, with 36 patents across 7 technology areas.

#8,917
of 49,997 US assignees by volume
Top 50%
by Innovation Score (35.3/100)
6.4
avg claims per patent
+75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8917 · Foreign Corporation #8,917 · 36 grants

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

  • GRANTS-SMALL 36 grants
  • UPPER-Q #8,917/49,997
  • PHOTO-FINISH Rosalind Franklin…
  • CPC-NARROW A62C · 7 areas
  • INNOV-THIN 35.3/100
  • CLAIMS-SPARSE 6.4 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-SURGE +75% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Rosalind Franklin University of Medicine and Science (±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 Senju’s 35.3 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 Senju

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

score

What this shows Senju's Innovation Score is 35.3/100 (top 50% 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 Senju?

Each dot is one of Senju’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). Senju’s own 6.4 claims/patent is at or below the 13.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Senju 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 35.936.036.03636.036.036.1 510152025 Granted patents (volume) Avg claims / patent Rosalind Franklin University of Medicine and Science - 36, 16.72Rosalind Franklin…Sabanci Universitesi - 36, 13.28Sabanci Universit…Sanuwave, Inc. - 36, 18.69SanuwaveSecure-ic SAS - 36, 14.64Secure-ic SASShenzhen Keya Medical Technology Corporation - 36, 19.61Shenzhen Keya Med…Sinox Company Ltd. - 36, 10.03SinoxSKF Lubrication Systems Germany GMBH - 36, 11.56SKF Lubrication S…Sogang University Research & Business Development Foundation - 36, 13Sogang University…Senju Sprinkler Co., Ltd. - 36, 6.44Senju Sprinkler
Senju vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Senju's grants concentrate

Senju Sprinkler Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 38.9% of grants classified under A62C (Fire-fighting). Peak complete grant year is 2022 (9 grants) versus a trough of 1 in 2018. By volume, Senju sits between Rosalind Franklin University of Medicine and Science and Sogang University Research & Business Development Foundation.

Senju's three-year grant acceleration

Senju Sprinkler Co., Ltd. shows 13 grants in 2022–2024 against only 9 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 Senju's volume?

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

patents

What this shows Senju holds 36 patents at rank #8,914, 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 Senju

By rank, the assignees closest to #8,914 in granted patent volume.

Leaders in A62C (Fire-fighting)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Senju, neither rank-band nor same-CPC leaders (those blocks stay above). In A62C (Fire-fighting), Senju ranks #24 of 253 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (35 here).

Bonza Botanicals PTY., Ltd. 35 Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd. 35 Shenzhen Nanpiaochen Industry Co., Ltd. 35 Okamura Corporation 35

Senju's Innovation Score vs. every tracked assignee

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

35 Top 50% higher than 50% 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

0246810 20152016201720182019202020212022202320242025 3
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
Senju Sprinkler Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 3 8.3%
2016 3 8.3%
2017 4 11.1%
2018 1 2.8%
2019 1 2.8%
2020 6 16.7%
2021 2 5.6%
2022 9 25.0%
2023 3 8.3%
2024 1 2.8%
2025partial year 3 8.3%

Which technologies does Senju Sprinkler Co., Ltd. patent most?

Top 7 of 7 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

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

  • Senju Sprinkler Co., Ltd.'s lead technology class is A62C (Fire-fighting), 38.9% of its portfolio - see every assignee active in that class. Explore A62C
  • Ranked #8,917 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Senju Sprinkler Co., Ltd. against Rosalind Franklin University of Medicine and Science, an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 35.3/100 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.