Where does Hampton Roads Sanitation District rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hampton Roads Sanitation District ranks #24,439 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 Hampton Roads Sanitation District hold?

Hampton Roads Sanitation District holds 11 US utility patents granted between 2015 and 2025, spanning 6 technology areas.

What is Hampton Roads Sanitation District's Innovation Score?

Hampton Roads Sanitation District has an Innovation Score of 35.4 out of 100 (top 49% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hampton Roads Sanitation District focus on?

Hampton Roads Sanitation District's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 10 patents, ranking #133 of 1,366 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

Is Hampton Roads Sanitation District's patent grant rate increasing or decreasing?

Hampton Roads Sanitation District's recent grant velocity is -89% 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 Hampton Roads Sanitation District's patents?

Hampton Roads Sanitation District's patents average 19.2 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 Hampton Roads Sanitation District 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

Hampton Roads Sanitation District

USPTO PatentsView assignee record - 11 granted patents across 6 technology areas, recorded in grant years 2015–2025. 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, Hampton ranks #24,439 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 6 technology areas.

#24,439
of 49,997 US assignees by volume: Top 49%
by Innovation Score (35.4/100): 19.2
avg claims per patent: -89%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R24439 · US Corporation #24,439 · 11 grants

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

GRANTS-MICRO 11 grants
MID-PACK #24,439/49,997
PHOTO-FINISH Haas Automation
CPC-NARROW C02F · 6 areas
INNOV-THIN 35.4/100
CLAIMS-RICH 19.2 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -89% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Haas Automation, 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.

How Hampton’s 35.4 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 8.6 pts (24%) Velocity 6.7 pts (19%) Breadth 8.7 pts (25%) Claim depth 11.5 pts (32%)

Qualcomm Incorporated · highest

85
Hampton Roads… · this assignee

35
3D Lighting… · lowest

7

What this shows Hampton's Innovation Score is 35.4/100 (top 49% 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 Hampton?

Each dot is one of Hampton’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). Hampton’s own 19.2 claims/patent is ABOVE the 18.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hampton's grants concentrate

Hampton Roads Sanitation District is a focused PatentsView assignee: 6 CPC subclasses with 90.9% 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 2015. By volume, Hampton sits between Haas Automation, Inc. and Hario Co., Ltd..

Hampton's three-year grant acceleration

Hampton Roads Sanitation District shows 1 grants in 2022–2024 against only 0 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.

Haas Automation

11
Halcore Group

11
Haliburton Energy…

11
Hammond Developme…

11
Happy Health

11
Harbinger Motors

11
Hardwire

11
Hario

11
Hampton Roads San… ◀

11

What this shows Hampton holds 11 patents at rank #24,470, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hampton

By rank, the assignees closest to #24,470 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Hampton's Innovation Score vs. every tracked assignee

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

35 Top 49% higher than 51% 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 · 2015–2025

Grants by year

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

View data table

Hampton Roads Sanitation District patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	9.1%
2016	5	45.5%
2018	3	27.3%
2024	1	9.1%
2025partial year	1	9.1%

Which technologies does Hampton Roads Sanitation District patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 10

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 9

B01D - Separation 2

E03B - Installations OR Methods FOR Obtaining, Collecting, OR Distributing Water 1

Y10T - Technical Subjects Covered BY Former US Classification 1

E03F - SEWERS; Cesspools 1

Top 6 of 6 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

Hampton Roads Sanitation District's patent record in context - here's where to go next.

Hampton Roads Sanitation District's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 90.9% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #24,439 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hampton Roads Sanitation District against Haas Automation, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 35.4/100 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.