PlainPatent
USPTO 2015–2025 USPTO PatentsView US Corporation

Well Master Corporation

USPTO PatentsView assignee record - 9 granted patents across 2 technology areas, recorded in grant years 2015–2024. 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).

RSS updates for this company
Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Well ranks #30,596 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 2 technology areas.

#30,596
of 49,997 US assignees by volume
Top 35%
by Innovation Score (40.7/100)
18.4
avg claims per patent
+100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R30596 · US Corporation #30,596 · 9 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

  • GRANTS-MICRO 9 grants
  • MID-PACK #30,596/49,997
  • PHOTO-FINISH Waikatolink
  • CPC-NARROW E21B · 2 areas
  • INNOV-PAR 40.7/100
  • CLAIMS-RICH 18.4 claims/avg
  • TYPE-USCORP US Corporation
  • VEL-SURGE +100% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Waikatolink 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 Well’s 40.7 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 Well

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

score

What this shows Well's Innovation Score is 40.7/100 (top 35% 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 Well?

Each dot is one of Well’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). Well’s own 18.4 claims/patent is ABOVE the 12.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Well 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 8.98.999.1 0510152025 Granted patents (volume) Avg claims / patent Waikatolink Limited - 9, 21.22WaikatolinkWarburton Technology Limited - 9, 11.22Warburton Technol…WatchGuard Technologies, Inc. - 9, 21.11WatchguardWebomates Inc. - 9, 13.56WebomatesWella Germany GmBH - 9, 9.44Wella GermanyWellhead Power Solutions, LLC - 9, 19.22Wellhead Power So…Wencon Development, Inc. - 9, 12Wencon DevelopmentWhiterock Exercise, Inc. - 9, 5.11Whiterock ExerciseWell Master Corporation - 9, 18.44Well Master
Well vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Well's grants concentrate

Well Master Corporation is a focused PatentsView assignee: 2 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 2022 (2 grants) versus a trough of 1 in 2015. By volume, Well sits between Waikatolink Limited and Whiterock Exercise, Inc..

Well's three-year grant acceleration

Well Master Corporation shows 5 grants in 2022–2024 against only 2 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 Well's volume?

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

patents

What this shows Well holds 9 patents at rank #30,580, 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 Well

By rank, the assignees closest to #30,580 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Well's Innovation Score vs. every tracked assignee

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

41 Top 35% higher than 65% 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

0.511.522.5 2015201820192020202220232024 1
USPTO utility patent grants by year · 2015–2024

Grants by year

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

View data table
Well Master Corporation patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 1 11.1%
2018 1 11.1%
2019 1 11.1%
2020 1 11.1%
2022 2 22.2%
2023 2 22.2%
2024 1 11.1%

Which technologies does Well Master Corporation patent most?

Top 2 of 2 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

Well Master Corporation's patent record in context - here's where to go next.

  • Well Master Corporation'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 #30,596 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Well Master Corporation against Waikatolink Limited, an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 40.7/100 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.