PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sprue Safety Products Ltd.

USPTO PatentsView assignee record - 13 granted patents across 3 technology areas, recorded in grant years 2015–2020. 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: G08B (SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS).

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Sprue ranks #21,822 of 50,000 tracked US assignees by granted-patent volume, with 13 patents across 3 technology areas.

#21,822
of 50,000 US assignees by volume
Top 92%
by Innovation Score (20.9/100)
9.5
avg claims per patent
-92%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21822 · Foreign Corporation #21,822 · 13 grants

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

  • GRANTS-MICRO 13 grants
  • MID-PACK #21,822/50,000
  • PHOTO-FINISH Sparkly Soul
  • CPC-NARROW G08B · 3 areas
  • INNOV-THIN 20.9/100
  • CLAIMS-PAR 9.5 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-DROP -92% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Sparkly Soul, 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.

Innovation-score neighbourhood around Sprue

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

score

What this shows Sprue's Innovation Score is 20.9/100 (top 92% 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

Where Sprue's grants concentrate

Sprue Safety Products Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 46.2% of grants classified under G08B (SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS). Peak complete grant year is 2018 (5 grants) versus a trough of 1 in 2016. By volume, Sprue sits between Sparkly Soul, Inc. and Stokely-van Camp, Inc..

Who files at Sprue's volume?

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

patents

What this shows Sprue holds 13 patents at rank #21,842, 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 Sprue

By rank, the assignees closest to #21,842 in granted patent volume.

Leaders in G08B (Signalling OR Calling Systems)

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

Sprue's Innovation Score vs. every tracked assignee

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

21 Top 92% higher than 8% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). This entry sits in this band. 30–40: 15,294 US assignees (31%). Above this entry. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. 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 20152016201720182020 1
USPTO utility patent grants by year · 2015–2020

Grants by year

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

View data table
Sprue Safety Products Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 2 15.4%
2016 1 7.7%
2017 4 30.8%
2018 5 38.5%
2020 1 7.7%

Which technologies does Sprue Safety Products Ltd. patent most?

Top 3 of 3 technology areas

Where it ranks

Overall rank by patents

#21,822

of 50,000 tracked assignees

Innovation Score

20.9 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?
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.