Overall rank by patents
#43,314
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView US Corporation
Southern Fabrication Works, Llc
USPTO PatentsView assignee record - 6 granted patents across 7 technology areas, active 2019–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C02F (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE).
6
Total patents granted
7
CPC technology areas
10.8
Avg claims per patent
+400%
5-year filing velocity
The verdict
Southern holds 6 US patents across 7 technology areas, rank #43,314 of 50,000 tracked assignees.
- #43,314
- of 50,000 US assignees by volume
- Top 78%
- by Innovation Score (27.0/100)
- 10.8
- avg claims per patent
- +400%
- filing velocity, last 5 yrs
Portfolio overview
Southern Fabrication Works, Llc has been granted 6 US utility patents between 2019 and 2025, placing Southern Fabrication Works, Llc at rank #43,314 across all assignees tracked by PlainPatent. This portfolio spans 7 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.8 claims per patent with primary concentration in C02F (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE). As a US Corporation, Southern Fabrication Works, Llc is one of the more focused assignees in the PatentsView dataset. By volume, Southern sits between Soshin Electric Co., Ltd. (6 patents, rank #43,310) and Spaceguard Products, Inc. (6 patents, rank #43,318) - the closest US assignees by grant volume. The composite Innovation Score of 27.0/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.
Filing cadence tells the strategic story. Between 2020 and 2025 the company received 5 grants, compared with 1 in the 2015–2019 window, a +400% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.
Claim depth and technology breadth together indicate competitive posture. Southern Fabrication Works, Llc's 10.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 7 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Southern Fabrication Works, Llc against peers pursuing similar technology classes.
Who files at Southern's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- Soshin Electric
Soshin Electric Co., Ltd.
6 patents
- Sotero
Sotero, Inc.
6 patents
- Soundwave Hearing
Soundwave Hearing, LLC
6 patents
- South Dakota Stat…
South Dakota State University
6 patents
- Southwall
Southwall Technologies Inc.
6 patents
- Space Copenhagen…
Space Copenhagen Design ApS
6 patents
- Space Engineering…
Space Engineering University
6 patents
- Spaceguard Produc…
SpaceGuard Products, Inc.
6 patents
- Southern Fabricat… ◀
Southern Fabrication Works, LLC
6 patents
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.
- Soshin Electric Co., Ltd. #43,310 · 6 patents
- Sotero, Inc. #43,311 · 6 patents
- Soundwave Hearing, Llc #43,312 · 6 patents
- South Dakota State University #43,313 · 6 patents
- Southwall Technologies Inc. #43,315 · 6 patents
- Space Copenhagen Design Aps #43,316 · 6 patents
- Space Engineering University #43,317 · 6 patents
- Spaceguard Products, Inc. #43,318 · 6 patents
Leaders in C02F (Treatment OF Water)
Other assignees with the most granted patents in Southern's primary technology class.
- Ecolab USA Inc. 243 in class
- KING FAHD University OF Petroleum AND Minerals 188 in class
- Evoqua Water Technologies Llc 177 in class
- Saudi Arabian OIL Company 147 in class
- Veolia Water Solutions & Technologies Support 82 in class
- Kurita Water Industries Ltd. 80 in class
- Nanjing University 75 in class
- Kemira OYJ 55 in class
Southern's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
27 Top 78% higher than 22% of 50,000 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
Grants by year
Teal-shaded recent years (2020–present) versus the 2019–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2019 | 1 | 16.7% |
| 2020 | 1 | 16.7% |
| 2021 | 1 | 16.7% |
| 2023 | 2 | 33.3% |
| 2025 | 1 | 16.7% |
Which technologies does Southern Fabrication Works, Llc patent most?
Top 7 of 7 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Focused
Claim Depth Simple
Velocity Accelerating
Frequently Asked Questions
How many patents does Southern Fabrication Works, Llc hold?
Southern Fabrication Works, Llc holds 6 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 7 CPC subclasses total.
Is Southern Fabrication Works, Llc's patent filing rate increasing or decreasing?
Southern Fabrication Works, Llc's recent filing velocity is +400% compared to the prior five-year period. This indicates accelerating innovation.
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 relatively simple claim structure, typical for focused inventions.
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.
How to use this portfolio
Southern's 6 grants land it in the top 78% by Innovation Score, but volume alone doesn't tell you where the strength sits.
- Read that count against the largest US assignees before treating it as dominance - Southern ranks #43,314 of 50,000. Top 50 holders
- Most of this portfolio concentrates in C02F - see who else leads that technology area. C02F leaders
- Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works
Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.
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.