Where does Southwest Petroleum University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Southwest Petroleum University ranks #1,364 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 Southwest Petroleum University hold?

Southwest Petroleum University holds 307 US utility patents granted between 2015 and 2025, spanning 99 technology areas.

What is Southwest Petroleum University's Innovation Score?

Southwest Petroleum University has an Innovation Score of 62.9 out of 100 (top 2% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Southwest Petroleum University's patent grant rate increasing or decreasing?

Southwest Petroleum University's recent grant velocity is +838% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Southwest Petroleum University's patents?

Southwest Petroleum University's patents average 7.7 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 Southwest Petroleum University 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

Southwest Petroleum University

Q: What technology areas does Southwest Petroleum University focus on?

Southwest Petroleum University's top technology area is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells) with 177 patents. Grants appear in 99 CPC subclasses total.

USPTO PatentsView assignee record - 307 granted patents across 99 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: E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Southwest ranks #1,364 of 49,997 tracked US assignees by granted-patent volume, with 307 patents across 99 technology areas.

#1,364
of 49,997 US assignees by volume: Top 2%
by Innovation Score (62.9/100): 7.7
avg claims per patent: +838%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1364 · Foreign Corporation #1,364 · 307 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 307 grants
TOP-DECILE #1,364/49,997
PHOTO-FINISH CertainTeed
CPC-WIDE E21B · 99 areas
INNOV-STRONG 62.9/100
CLAIMS-SPARSE 7.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +838% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: CertainTeed 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.

Qualcomm Incorporated · highest

85
Shanghaitech… · near

63
Digimarc · near

63
Innomotics · near

63
Southwest Petroleum… · this assignee

63
Wangs Alliance · near

63
3D Lighting… · lowest

7

What this shows Southwest's Innovation Score is 62.9/100 (top 2% 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.

How Southwest's grant cadence moved

Between 2020–2024, Southwest Petroleum University received 244 grants versus 26 in 2015–2019 (+838% equal-window velocity, top decile growth). Across complete PatentsView years, output peaked in 2023 at 64 grants and bottomed in 2017 at 1. Lead class E21B accounts for 57.7% of the portfolio across 99 subclasses. Volume neighbours: Twilio Inc. (#1,360) and Bissell Inc. (#1,368).

Southwest's three-year grant acceleration

From 2019–2021 to 2022–2024, Southwest Petroleum University moved from 86 to 174 grants (2.02x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #208. See the growth leaderboard.

Twilio

309
Shanghai Jiao Ton…

308
Certainteed

307
Naver

307
The Chinese Unive…

307
Verizon Media

307
Southwest Petrole… ◀

307
Alfa Laval Corpor…

306
Bissell

306

What this shows Southwest holds 307 patents at rank #1,364, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Southwest

By rank, the assignees closest to #1,364 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Southwest, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (63 here).

Digimarc Corporation 63 Innomotics GMBH 63 Wangs Alliance Corporation 63 Shanghaitech University 63

Similar claim depth

Nearest assignees by average claims per patent (7.7 here).

HCT Group Holdings Limited 7.7 avg Tachi-s Co., Ltd. 7.6 avg Sumitomo Electric Printed Circuits, Inc. 7.6 avg ELC Management LLC 7.7 avg

Southwest's Innovation Score vs. every tracked assignee

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

63 Top 2% higher than 98% 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

Southwest Petroleum University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	1.0%
2016	2	0.7%
2017	1	0.3%
2018	4	1.3%
2019	16	5.2%
2020	26	8.5%
2021	44	14.3%
2022	56	18.2%
2023	64	20.8%
2024	54	17.6%
2025partial year	37	12.1%

Which technologies does Southwest Petroleum University patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 177

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 87

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 75

G06F - Electric Digital Data Processing 23

G01V - GEOPHYSICS; Gravitational MEASUREMENTS; Detecting Masses OR OBJECTS; Tags 20

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 16

Y02A - Technologies FOR Adaptation TO Climate Change 15

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 15

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 14

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 10

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 8

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 8

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 8

B01D - Separation 6

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 6

Top 15 of 99 technology areas

Where it ranks

Overall rank by patents

#1,364

of 49,997 tracked assignees

Innovation Score

62.9 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

Southwest Petroleum University's patent record in context - here's where to go next.

Southwest Petroleum University's lead technology class is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells), 57.7% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #1,364 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Southwest Petroleum University against Twilio Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 62.9/100 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.