Where does Split Rock Filter Systems LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Split Rock Filter Systems LLC ranks #33,404 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 Split Rock Filter Systems LLC hold?

Split Rock Filter Systems LLC holds 8 US utility patents granted between 2018 and 2024, spanning 3 technology areas.

What is Split Rock Filter Systems LLC's Innovation Score?

Split Rock Filter Systems LLC has an Innovation Score of 27.1 out of 100 (23rd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Split Rock Filter Systems LLC focus on?

Split Rock Filter Systems LLC's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 8 patents, ranking #178 of 1,366 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

Is Split Rock Filter Systems LLC's patent grant rate increasing or decreasing?

Split Rock Filter Systems LLC's recent grant velocity is +200% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Split Rock Filter Systems LLC's patents?

Split Rock Filter Systems LLC's patents average 20.5 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 Split Rock Filter Systems LLC 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 US Corporation

Split Rock Filter Systems LLC

USPTO PatentsView assignee record - 8 granted patents across 3 technology areas, recorded in grant years 2018–2024. 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Split ranks #33,404 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 3 technology areas.

#33,404
of 49,997 US assignees by volume: 23rd percentile
by Innovation Score (27.1/100): 20.5
avg claims per patent: +200%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R33404 · US Corporation #33,404 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-DENSE · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #33,404/49,997
PHOTO-FINISH Spherical Block
CPC-NARROW C02F · 3 areas
INNOV-THIN 27.1/100
CLAIMS-DENSE 20.5 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +200% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Spherical Block LLC (±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 Split’s 27.1 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 7.6 pts (28%) Velocity 1.1 pts (4%) Breadth 6.1 pts (23%) Claim depth 12.3 pts (45%)

Qualcomm Incorporated · highest

85
Split Rock Filter… · this assignee

27
3D Lighting… · lowest

7

What this shows Split's Innovation Score is 27.1/100 (23rd 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.

Does more volume mean deeper claims for Split?

Each dot is one of Split’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). Split’s own 20.5 claims/patent is ABOVE the 17.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Split's grants concentrate

Split Rock Filter Systems LLC is a focused PatentsView assignee: 3 CPC subclasses with 100% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2021 (4 grants) versus a trough of 1 in 2018. By volume, Split sits between Spherical Block LLC and Sputtering Components, Inc..

Split's three-year grant acceleration

Split Rock Filter Systems LLC shows 1 grants in 2022–2024 against only 6 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.

Spherical Block

8
Spinlaunch

8
Spine View

8
Spirited Eagle En…

8
Spokane Industries

8
Spring (U )

8
Springseal

8
Sputtering Compon…

8
Split Rock Filter… ◀

8

What this shows Split holds 8 patents at rank #33,441, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Split

By rank, the assignees closest to #33,441 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Split's Innovation Score vs. every tracked assignee

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

27 23rd percentile higher than 23% 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 · 2018–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Split Rock Filter Systems LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	12.5%
2019	1	12.5%
2020	1	12.5%
2021	4	50.0%
2024	1	12.5%

Which technologies does Split Rock Filter Systems LLC patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 8

B01D - Separation 7

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 5

Top 3 of 3 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

Split Rock Filter Systems LLC's patent record in context - here's where to go next.

Split Rock Filter Systems LLC's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 100% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #33,404 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Split Rock Filter Systems LLC against Spherical Block LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.1/100 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.