Where does Southern Fabrication Works, LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Southern Fabrication Works, LLC ranks #43,236 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 Southern Fabrication Works, LLC hold?

Southern Fabrication Works, LLC holds 6 US utility patents granted between 2019 and 2025, spanning 7 technology areas.

What is Southern Fabrication Works, LLC's Innovation Score?

Southern Fabrication Works, LLC has an Innovation Score of 27.0 out of 100 (22nd 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 Southern Fabrication Works, LLC focus on?

Southern Fabrication Works, LLC's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 3 patents, ranking #502 of 1,366 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Southern Fabrication Works, LLC's patent grant rate increasing or decreasing?

Southern Fabrication Works, LLC's recent grant velocity is +300% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Southern Fabrication Works, LLC's patents?

Southern Fabrication Works, LLC's patents average 10.8 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 Southern Fabrication Works, 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

Southern Fabrication Works, LLC

USPTO PatentsView assignee record - 6 granted patents across 7 technology areas, recorded in grant years 2019–2025. 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Southern ranks #43,236 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 7 technology areas.

#43,236
of 49,997 US assignees by volume: 22nd percentile
by Innovation Score (27.0/100): 10.8
avg claims per patent: +300%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R43236 · US Corporation #43,236 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #43,236/49,997
PHOTO-FINISH Soshin Electric
CPC-NARROW C02F · 7 areas
INNOV-THIN 27.0/100
CLAIMS-PAR 10.8 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +300% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Soshin Electric 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 Southern’s 27.0 Innovation Score adds up

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

Volume 6.7 pts (25%) Velocity 4.4 pts (16%) Breadth 9.4 pts (35%) Claim depth 6.5 pts (24%)

Qualcomm Incorporated · highest

85
Southern Fabrication… · this assignee

27
3D Lighting… · lowest

7

What this shows Southern's Innovation Score is 27.0/100 (22nd 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 Southern?

Each dot is one of Southern’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). Southern’s own 10.8 claims/patent is at or below the 12.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Southern's grants concentrate

Southern Fabrication Works, LLC is a focused PatentsView assignee: 7 CPC subclasses with 50% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2023 (2 grants) versus a trough of 1 in 2019. By volume, Southern sits between Soshin Electric Co., Ltd. and SpaceGuard Products, Inc..

Southern's three-year grant acceleration

Southern Fabrication Works, LLC shows 2 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.

Soshin Electric

6
Sotero

6
Soundwave Hearing

6
South Dakota Stat…

6
Southwall

6
Space Copenhagen…

6
Space Engineering…

6
Spaceguard Produc…

6
Southern Fabricat… ◀

6

What this shows Southern holds 6 patents at rank #43,314, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Southern

By rank, the assignees closest to #43,314 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Southern's Innovation Score vs. every tracked assignee

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

27 22nd percentile higher than 22% 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 · 2019–2025

Grants by year

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

View data table

Southern Fabrication Works, LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	16.7%
2020	1	16.7%
2021	1	16.7%
2023	2	33.3%
2025partial year	1	16.7%

Which technologies does Southern Fabrication Works, LLC patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 3

B01D - Separation 3

A01D - HARVESTING; Mowing 1

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 1

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

B25J - MANIPULATORS; Chambers Provided With Manipulation Devices 1

B26D - CUTTING; Details Common TO Machines FOR Perforating, Punching, Cutting-out, Stamping-out OR Severing 1

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

Southern Fabrication Works, LLC's patent record in context - here's where to go next.

Southern Fabrication Works, LLC's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 50% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #43,236 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Southern Fabrication Works, LLC against Soshin Electric Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.0/100 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

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.