Where does D.C. Water and Sewer Authority rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), D.C. Water and Sewer Authority ranks #22,448 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 D.C. Water and Sewer Authority hold?

D.C. Water and Sewer Authority holds 12 US utility patents granted between 2016 and 2025, spanning 5 technology areas.

What is D.C. Water and Sewer Authority's Innovation Score?

D.C. Water and Sewer Authority has an Innovation Score of 34.6 out of 100 (48th 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 D.C. Water and Sewer Authority focus on?

D.C. Water and Sewer Authority's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 11 patents, ranking #116 of 1,366 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

Is D.C. Water and Sewer Authority's patent grant rate increasing or decreasing?

D.C. Water and Sewer Authority's recent grant velocity is -90% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for D.C. Water and Sewer Authority's patents?

D.C. Water and Sewer Authority's patents average 18.6 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 D.C. Water and Sewer Authority 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

D.C. Water and Sewer Authority

USPTO PatentsView assignee record - 12 granted patents across 5 technology areas, recorded in grant years 2016–2025. 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

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The verdict

According to USPTO PatentsView, D.c. ranks #22,448 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 5 technology areas.

#22,448
of 49,997 US assignees by volume: 48th percentile
by Innovation Score (34.6/100): 18.6
avg claims per patent: -90%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R22448 · US Corporation #22,448 · 12 grants

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

GRANTS-MICRO 12 grants
MID-PACK #22,448/49,997
PHOTO-FINISH Curio Holding
CPC-NARROW C02F · 5 areas
INNOV-THIN 34.6/100
CLAIMS-RICH 18.6 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -90% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Curio Holding Company (±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 D.c.’s 34.6 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 8.9 pts (26%) Velocity 6.7 pts (19%) Breadth 7.9 pts (23%) Claim depth 11.1 pts (32%)

Qualcomm Incorporated · highest

85
D C Water and Sewer… · this assignee

35
3D Lighting… · lowest

7

What this shows D.c.'s Innovation Score is 34.6/100 (48th 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 D.c.?

Each dot is one of D.c.’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). D.c.’s own 18.6 claims/patent is ABOVE the 14.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where D.c.'s grants concentrate

D.C. Water and Sewer Authority is a focused PatentsView assignee: 5 CPC subclasses with 91.7% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2016 (5 grants) versus a trough of 1 in 2019. By volume, D.c. sits between Curio Holding Company and Danxiao Information Tech Ltd..

D.c.'s three-year grant acceleration

D.C. Water and Sewer Authority shows 1 grants in 2022–2024 against only 1 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.

Curio Holding

12
Cyan Systems

12
Cycling Sports Gr…

12
Cypress Lake Soft…

12
D3 Semiconductor

12
Dainichi

12
Damballa

12
Danxiao Informati…

12
D C Water and Sew… ◀

12

What this shows D.C. holds 12 patents at rank #22,435, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near DC

By rank, the assignees closest to #22,435 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

D.c.'s Innovation Score vs. every tracked assignee

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

35 48th percentile higher than 48% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

D.C. Water and Sewer Authority patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	5	41.7%
2017	2	16.7%
2018	2	16.7%
2019	1	8.3%
2024	1	8.3%
2025partial year	1	8.3%

Which technologies does D.C. Water and Sewer Authority patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 11

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 10

B01D - Separation 3

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

B66F - Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load 1

Top 5 of 5 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

D.C. Water and Sewer Authority's patent record in context - here's where to go next.

D.C. Water and Sewer Authority's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 91.7% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #22,448 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare D.C. Water and Sewer Authority against Curio Holding Company, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.6/100 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.