PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Petrolink International Ltd.

USPTO PatentsView assignee record - 20 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: E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells).

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The verdict

According to USPTO PatentsView, Petrolink ranks #14,854 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 5 technology areas.

#14,854
of 49,997 US assignees by volume
46th percentile
by Innovation Score (34.0/100)
19.9
avg claims per patent
+86%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14854 · Foreign Corporation #14,854 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

  • GRANTS-SMALL 20 grants
  • MID-PACK #14,854/49,997
  • PHOTO-FINISH Paul Kristen
  • CPC-NARROW E21B · 5 areas
  • INNOV-THIN 34.0/100
  • CLAIMS-RICH 19.9 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-SURGE +86% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Paul Kristen, 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 Petrolink’s 34.0 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Innovation-score neighbourhood around Petrolink

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

What this shows Petrolink's Innovation Score is 34.0/100 (46th 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.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

Does more volume mean deeper claims for Petrolink?

Each dot is one of Petrolink’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). Petrolink’s own 19.9 claims/patent is ABOVE the 14.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Petrolink vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 19.919.92020.1 10152025 Granted patents (volume) Avg claims / patent Paul Kristen, Inc. - 20, 14.15Paul KristenPeak Completion Technologies, Inc. - 20, 13.65Peak CompletionPerdiemco LLC - 20, 24.35PerdiemcoPersonality Gym AB - 20, 15.3Personality Gym ABPharmacosmos Holding A/S - 20, 23.1Pharmacosmos Hold…Phase Change Energy Solutions, Inc. - 20, 14.4Phase Change Ener…PhasorLab, Inc. - 20, 16.15PhasorlabPictech Management Limited - 20, 13.45Pictech ManagementPetrolink International Ltd. - 20, 19.9Petrolink Interna…
Petrolink vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Petrolink's grants concentrate

Petrolink International Ltd. is a focused PatentsView assignee: 5 CPC subclasses with 100% 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 2019 (4 grants) versus a trough of 1 in 2015. By volume, Petrolink sits between Paul Kristen, Inc. and Pictech Management Limited.

Petrolink's three-year grant acceleration

Petrolink International Ltd. shows 6 grants in 2022–2024 against only 11 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.

Who files at Petrolink's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Petrolink holds 20 patents at rank #14,858, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Petrolink

By rank, the assignees closest to #14,858 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Petrolink's Innovation Score vs. every tracked assignee

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

34 46th percentile higher than 46% of 49,997 US assignees

This assignee 0 100 every tracked assignee, bucketed by value

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

012345 2015201620192020202120222023 4
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
Petrolink International Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 1 5.0%
2016 2 10.0%
2019 4 20.0%
2020 4 20.0%
2021 3 15.0%
2022 2 10.0%
2023 4 20.0%

Which technologies does Petrolink International Ltd. patent most?

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

Petrolink International Ltd.'s patent record in context - here's where to go next.

  • Petrolink International Ltd.'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), 100% of its portfolio - see every assignee active in that class. Explore E21B
  • Ranked #14,854 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Petrolink International Ltd. against Paul Kristen, Inc., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 34.0/100 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

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.