Where does Stella Chemifa Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Stella Chemifa Corporation ranks #12,241 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 Stella Chemifa Corporation hold?

Stella Chemifa Corporation holds 25 US utility patents granted between 2015 and 2025, spanning 26 technology areas.

What is Stella Chemifa Corporation's Innovation Score?

Stella Chemifa Corporation has an Innovation Score of 39.9 out of 100 (top 37% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Stella Chemifa Corporation's patent grant rate increasing or decreasing?

Stella Chemifa Corporation's recent grant velocity is -36% 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 Stella Chemifa Corporation's patents?

Stella Chemifa Corporation's patents average 8.8 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 Stella Chemifa Corporation 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 Foreign Corporation

Stella Chemifa Corporation

Q: What technology areas does Stella Chemifa Corporation focus on?

Stella Chemifa Corporation's top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 17 patents, ranking #810 of 5,963 assignees active in that subclass. Grants appear in 26 CPC subclasses total.

USPTO PatentsView assignee record - 25 granted patents across 26 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Stella ranks #12,241 of 49,997 tracked US assignees by granted-patent volume, with 25 patents across 26 technology areas.

#12,241
of 49,997 US assignees by volume: Top 37%
by Innovation Score (39.9/100): 8.8
avg claims per patent: -36%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R12241 · Foreign Corporation #12,241 · 25 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-SMALL 25 grants
UPPER-Q #12,241/49,997
PHOTO-FINISH Spal Automotive S R L
CPC-FOCUS Y02E · 26 areas
INNOV-THIN 39.9/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -36% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Spal Automotive S.R.L. (±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 Stella’s 39.9 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 11.3 pts (28%) Velocity 5.3 pts (13%) Breadth 18.0 pts (45%) Claim depth 5.3 pts (13%)

Qualcomm Incorporated · highest

85
Apaq Technology · near

40
Kama-Tech (HK) · near

40
Stella Chemifa · this assignee

40
Stitch Fix · near

40
Valcare · near

40
3D Lighting… · lowest

7

What this shows Stella's Innovation Score is 39.9/100 (top 37% 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 Stella?

Each dot is one of Stella’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). Stella’s own 8.8 claims/patent is at or below the 12.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Stella's grants concentrate

Stella Chemifa Corporation is a focused PatentsView assignee: 26 CPC subclasses with 68% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2015 (5 grants) versus a trough of 1 in 2020. By volume, Stella sits between Spal Automotive S.R.L. and Suspa GMBH.

Stella's three-year grant acceleration

Stella Chemifa Corporation shows 4 grants in 2022–2024 against only 5 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.

Spal Automotive S…

25
SPD Swiss Precisi…

25
Speedlink Technol…

25
Ssab Technology AB

25
Storart Technology

25
Stratosaudio

25
Sunday Afternoons

25
Suspa

25
Stella Chemifa ◀

25

What this shows Stella holds 25 patents at rank #12,224, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Stella

By rank, the assignees closest to #12,224 in granted patent volume.

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

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Stella, neither rank-band nor same-CPC leaders (those blocks stay above). In Y02E (Reduction OF Greenhouse GAS [GHG] Emissions), Stella ranks #810 of 5,963 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (40 here).

Kama-Tech (HK) Limited 40 Valcare, Inc. 40 Apaq Technology Co., Ltd. 40 Stitch Fix, Inc. 40

Stella's Innovation Score vs. every tracked assignee

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

40 Top 37% higher than 63% 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

Stella Chemifa Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	20.0%
2016	3	12.0%
2017	4	16.0%
2018	2	8.0%
2020	1	4.0%
2021	4	16.0%
2022	1	4.0%
2023	1	4.0%
2024	2	8.0%
2025partial year	2	8.0%

Which technologies does Stella Chemifa Corporation patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 17

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 15

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 15

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 5

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 4

B82Y - Specific Uses OR Applications OF NANOSTRUCTURES; Measurement OR Analysis OF NANOSTRUCTURES; Manufacture OR Treatment OF Nanostructures 3

Y10T - Technical Subjects Covered BY Former US Classification 3

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 3

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 3

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 2

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 2

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 2

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

C07H - SUGARS; Derivatives THEREOF; NUCLEOSIDES; NUCLEOTIDES; Nucleic Acids 2

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 2

Top 15 of 26 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

Stella Chemifa Corporation's patent record in context - here's where to go next.

Stella Chemifa Corporation's lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 68% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #12,241 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Stella Chemifa Corporation against Spal Automotive S.R.L., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 39.9/100 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.