Where does Westlake Vinyl Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Westlake Vinyl Corporation ranks #44,078 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 Westlake Vinyl Corporation hold?

Westlake Vinyl Corporation holds 6 US utility patents granted between 2015 and 2023, spanning 5 technology areas.

What is Westlake Vinyl Corporation's Innovation Score?

Westlake Vinyl Corporation has an Innovation Score of 23.1 out of 100 (11th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Westlake Vinyl Corporation's patent grant rate increasing or decreasing?

Westlake Vinyl Corporation's recent grant velocity is -50% 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 Westlake Vinyl Corporation's patents?

Westlake Vinyl Corporation's patents average 10.3 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 Westlake Vinyl 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 US Corporation

Westlake Vinyl Corporation

Q: What technology areas does Westlake Vinyl Corporation focus on?

Westlake Vinyl Corporation's top technology area is C25B (Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor) with 6 patents. Grants appear in 5 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 5 technology areas, recorded in grant years 2015–2023. 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: C25B (Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Westlake ranks #44,078 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 5 technology areas.

#44,078
of 49,997 US assignees by volume: 11th percentile
by Innovation Score (23.1/100): 10.3
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44078 · US Corporation #44,078 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #44,078/49,997
PHOTO-FINISH West Drilling…
CPC-NARROW C25B · 5 areas
INNOV-THIN 23.1/100
CLAIMS-PAR 10.3 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: West Drilling Products AS (±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.

Qualcomm Incorporated · highest

85
Westlake Vinyl · this assignee

23
3D Lighting… · lowest

7

What this shows Westlake's Innovation Score is 23.1/100 (11th 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.

Where Westlake's grants concentrate

Westlake Vinyl Corporation is a focused PatentsView assignee: 5 CPC subclasses with 100% of grants classified under C25B (Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor). Peak complete grant year is 2019 (2 grants) versus a trough of 1 in 2015. By volume, Westlake sits between West Drilling Products AS and White Mule Company.

Westlake's three-year grant acceleration

Westlake Vinyl Corporation 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.

West Drilling Pro…

6
West Liberty Foods

6
West Notifications

6
Westek

6
Westmor Industries

6
Westwood Capital…

6
Wheely-safe

6
White Mule

6
Westlake Vinyl ◀

6

What this shows Westlake holds 6 patents at rank #44,068, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Westlake

By rank, the assignees closest to #44,068 in granted patent volume.

Leaders in C25B (Electrolytic OR Electrophoretic Processes FOR THE Product…)

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

Westlake's Innovation Score vs. every tracked assignee

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

23 11th percentile higher than 11% 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 · 2015–2023

Grants by year

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

View data table

Westlake Vinyl Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	16.7%
2018	1	16.7%
2019	2	33.3%
2021	1	16.7%
2023	1	16.7%

Which technologies does Westlake Vinyl Corporation patent most?

C25B - Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor 6

B01D - Separation 6

C01D - Compounds OF Alkali Metals, i.e. Lithium, Sodium, Potassium, Rubidium, Caesium, OR Francium 3

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 3

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 3

Top 5 of 5 technology areas

Where it ranks

Overall rank by patents

#44,078

of 49,997 tracked assignees

Innovation Score

23.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Westlake Vinyl Corporation's patent record in context - here's where to go next.

Westlake Vinyl Corporation's lead technology class is C25B (Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor), 100% of its portfolio - see every assignee active in that class. Explore C25B
Ranked #44,078 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Westlake Vinyl Corporation against West Drilling Products AS, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 23.1/100 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.