Where does Watt Fuel Cell Corp. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Watt Fuel Cell Corp. ranks #9,669 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 Watt Fuel Cell Corp. hold?

Watt Fuel Cell Corp. holds 33 US utility patents granted between 2015 and 2025, spanning 17 technology areas.

What is Watt Fuel Cell Corp.'s Innovation Score?

Watt Fuel Cell Corp. has an Innovation Score of 42.1 out of 100 (top 31% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Watt Fuel Cell Corp. focus on?

Watt Fuel Cell Corp.'s top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 31 patents, ranking #498 of 5,963 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

Is Watt Fuel Cell Corp.'s patent grant rate increasing or decreasing?

Watt Fuel Cell Corp.'s recent grant velocity is -6% 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 Watt Fuel Cell Corp.'s patents?

Watt Fuel Cell Corp.'s patents average 19.1 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 Watt Fuel Cell Corp. 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

Watt Fuel Cell Corp.

USPTO PatentsView assignee record - 33 granted patents across 17 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: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Watt ranks #9,669 of 49,997 tracked US assignees by granted-patent volume, with 33 patents across 17 technology areas.

#9,669
of 49,997 US assignees by volume: Top 31%
by Innovation Score (42.1/100): 19.1
avg claims per patent: -6%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9669 · US Corporation #9,669 · 33 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 33 grants
UPPER-Q #9,669/49,997
PHOTO-FINISH Walker Digital…
CPC-FOCUS Y02E · 17 areas
INNOV-PAR 42.1/100
CLAIMS-RICH 19.1 claims/avg
TYPE-USCORP US Corporation
VEL-FLAT -6% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Walker Digital Table Systems, 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 Watt’s 42.1 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 12.2 pts (29%) Velocity 3.9 pts (9%) Breadth 14.6 pts (35%) Claim depth 11.5 pts (27%)

Qualcomm Incorporated · highest

85
Amtech Systems · near

42
Canadian Tire · near

42
Guangdong Xizhongxi… · near

42
Seasons 4 · near

42
Watt Fuel Cell · this assignee

42
3D Lighting… · lowest

7

What this shows Watt's Innovation Score is 42.1/100 (top 31% 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 Watt?

Each dot is one of Watt’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). Watt’s own 19.1 claims/patent is ABOVE the 5.7 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Watt's grants concentrate

Watt Fuel Cell Corp. is a focused PatentsView assignee: 17 CPC subclasses with 93.9% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2017 (8 grants) versus a trough of 1 in 2015. By volume, Watt sits between Wireless Environment, LLC and ZEN Design Solutions Limited.

Watt's three-year grant acceleration

Watt Fuel Cell Corp. shows 7 grants in 2022–2024 against only 12 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.

Wireless Environm…

33
Woongjin Coway

33
Worklife Brands

33
Walker Digital Ta…

33
Wi-charge

33
Xiamen Baby Prett…

33
Xiamen Longstar L…

33
ZEN Design Soluti…

33
Watt Fuel Cell ◀

33

What this shows Watt holds 33 patents at rank #9,671, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Watt

By rank, the assignees closest to #9,671 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Watt, neither rank-band nor same-CPC leaders (those blocks stay above). In Y02E (Reduction OF Greenhouse GAS [GHG] Emissions), Watt ranks #498 of 5,963 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (42 here).

Seasons 4, Inc. 42 Canadian Tire Corporation, Limited 42 Amtech Systems, LLC 42 Guangdong Xizhongxi Technology Co., Ltd. 42

Watt's Innovation Score vs. every tracked assignee

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

42 Top 31% higher than 69% 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

Watt Fuel Cell Corp. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	3.0%
2016	2	6.1%
2017	8	24.2%
2018	1	3.0%
2019	4	12.1%
2020	6	18.2%
2021	2	6.1%
2022	4	12.1%
2023	3	9.1%
2025partial year	2	6.1%

Which technologies does Watt Fuel Cell Corp. patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 31

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 28

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 17

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 16

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 7

F04D - Non-positive-displacement Pumps 6

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 4

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 3

Y02T - Climate Change Mitigation Technologies Related TO Transportation 3

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 2

B28B - Shaping Clay OR Other Ceramic COMPOSITIONS; Shaping SLAG; Shaping Mixtures Containing Cementitious Material, e.g. Plaster 2

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 2

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 1

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

Top 15 of 17 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

Watt Fuel Cell Corp.'s patent record in context - here's where to go next.

Watt Fuel Cell Corp.'s lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 93.9% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #9,669 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Watt Fuel Cell Corp. against Wireless Environment, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 42.1/100 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.