Where does Petrospec Engineering Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Petrospec Engineering Inc. ranks #49,561 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 Petrospec Engineering Inc. hold?

Petrospec Engineering Inc. holds 5 US utility patents granted between 2017 and 2021, spanning 4 technology areas.

What is Petrospec Engineering Inc.'s Innovation Score?

Petrospec Engineering Inc. has an Innovation Score of 24.4 out of 100 (15th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Petrospec Engineering Inc.'s patent grant rate increasing or decreasing?

Petrospec Engineering 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 Petrospec Engineering Inc.'s patents?

Petrospec Engineering Inc.'s patents average 18.6 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 Petrospec Engineering 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 Foreign Corporation

Petrospec Engineering Inc.

Q: What technology areas does Petrospec Engineering Inc. focus on?

Petrospec Engineering Inc.'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 4 patents, ranking #774 of 1,363 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 4 technology areas, recorded in grant years 2017–2021. 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, Petrospec ranks #49,561 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 4 technology areas.

#49,561
of 49,997 US assignees by volume: 15th percentile
by Innovation Score (24.4/100): 18.6
avg claims per patent: -75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R49561 · Foreign Corporation #49,561 · 5 grants

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

GRANTS-MICRO 5 grants
BOTTOM-DECILE #49,561/49,997
PHOTO-FINISH Pernix Ireland Pain
CPC-NARROW E21B · 4 areas
INNOV-THIN 24.4/100
CLAIMS-RICH 18.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Pernix Ireland Pain Limited (±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 Petrospec’s 24.4 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 (25%) Velocity 0.0 pts (0%) Breadth 7.1 pts (29%) Claim depth 11.2 pts (46%)

Qualcomm Incorporated · highest

85
Petrospec Engineering · this assignee

24
3D Lighting… · lowest

7

What this shows Petrospec's Innovation Score is 24.4/100 (15th 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 Petrospec?

Each dot is one of Petrospec’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). Petrospec’s own 18.6 claims/patent is ABOVE the 13.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Petrospec's grants concentrate

Petrospec Engineering Inc. is a focused PatentsView assignee: 4 CPC subclasses with 80% of grants classified under E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2017. By volume, Petrospec sits between Pernix Ireland Pain Limited and Phasor Solutions Limited.

Pernix Ireland Pa…

5
Personal Care Pro…

5
Personalizations

5
Perthera

5
Peyton Ventures

5
Pharmagra Labs

5
Pharmosa Biopharm

5
Phasor Solutions

5
Petrospec Enginee… ◀

5

What this shows Petrospec holds 5 patents at rank #49,710, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Petrospec

By rank, the assignees closest to #49,710 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Petrospec's Innovation Score vs. every tracked assignee

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

24 15th percentile higher than 15% 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 · 2017–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Petrospec Engineering Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	20.0%
2018	2	40.0%
2019	1	20.0%
2021	1	20.0%

Which technologies does Petrospec Engineering Inc. patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 4

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 1

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 1

F04D - Non-positive-displacement Pumps 1

Top 4 of 4 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

Petrospec Engineering Inc.'s patent record in context - here's where to go next.

Petrospec Engineering Inc.'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), 80% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #49,561 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Petrospec Engineering Inc. against Pernix Ireland Pain Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.4/100 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.