Where does Central Boiler, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Central Boiler, Inc. ranks #45,553 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 Central Boiler, Inc. hold?

Central Boiler, Inc. holds 5 US utility patents granted between 2018 and 2022, spanning 5 technology areas.

What is Central Boiler, Inc.'s Innovation Score?

Central Boiler, Inc. has an Innovation Score of 28.8 out of 100 (28th 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 Central Boiler, Inc. focus on?

Central Boiler, Inc.'s top technology area is F24H (Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General) with 3 patents, ranking #80 of 303 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

Is Central Boiler, Inc.'s patent grant rate increasing or decreasing?

Central Boiler, Inc.'s recent grant velocity is -75% 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 Central Boiler, Inc.'s patents?

Central Boiler, Inc.'s patents average 20.8 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 Central Boiler, Inc. 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

Central Boiler, Inc.

USPTO PatentsView assignee record - 5 granted patents across 5 technology areas, recorded in grant years 2018–2022. 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: F24H (Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Central ranks #45,553 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 5 technology areas.

#45,553
of 49,997 US assignees by volume: 28th percentile
by Innovation Score (28.8/100): 20.8
avg claims per patent: -75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R45553 · US Corporation #45,553 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-DENSE · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #45,553/49,997
PHOTO-FINISH Cengage Learning
CPC-NARROW F24H · 5 areas
INNOV-THIN 28.8/100
CLAIMS-DENSE 20.8 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Cengage Learning, 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 Central’s 28.8 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 6.2 pts (22%) Velocity 2.2 pts (8%) Breadth 7.9 pts (27%) Claim depth 12.5 pts (43%)

Qualcomm Incorporated · highest

85
Central Boiler · this assignee

29
3D Lighting… · lowest

7

What this shows Central's Innovation Score is 28.8/100 (28th 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 Central?

Each dot is one of Central’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). Central’s own 20.8 claims/patent is ABOVE the 16.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Central's grants concentrate

Central Boiler, Inc. is a focused PatentsView assignee: 5 CPC subclasses with 60% of grants classified under F24H (Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General). Peak complete grant year is 2019 (3 grants) versus a trough of 1 in 2018. By volume, Central sits between Cengage Learning, Inc. and Centre for Probe Development and Commercialization.

Central's three-year grant acceleration

Central Boiler, Inc. shows 1 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.

Cengage Learning

5
Centauri

5
Centercross Arche…

5
Centergenics

5
Central Illinois…

5
Centre for Drug R…

5
Centre for Intell…

5
Centre for Probe…

5
Central Boiler ◀

5

What this shows Central holds 5 patents at rank #45,791, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Central

By rank, the assignees closest to #45,791 in granted patent volume.

Leaders in F24H (Fluid Heaters)

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

Central's Innovation Score vs. every tracked assignee

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

29 28th percentile higher than 28% 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 · 2018–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Central Boiler, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	20.0%
2019	3	60.0%
2022	1	20.0%

Which technologies does Central Boiler, Inc. patent most?

F24H - Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General 3

F24B - Domestic Stoves OR Ranges FOR Solid Fuels ; Implements FOR USE IN Connection With Stoves OR Ranges 2

F23B - Methods OR Apparatus FOR Combustion Using Only Solid Fuel 2

F22B - Methods OF Steam GENERATION; Steam Boilers 1

F28G - Cleaning OF Internal OR External Surfaces OF Heat-exchange OR Heat-transfer Conduits, e.g. Water Tubes OR Boilers 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

Central Boiler, Inc.'s patent record in context - here's where to go next.

Central Boiler, Inc.'s lead technology class is F24H (Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General), 60% of its portfolio - see every assignee active in that class. Explore F24H
Ranked #45,553 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Central Boiler, Inc. against Cengage Learning, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.8/100 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.