Overall rank by patents
#30,580
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView US Corporation
Well Master Corporation
USPTO PatentsView assignee record - 9 granted patents across 2 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: E21B (EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS).
9
Total patents granted
2
CPC technology areas
18.4
Avg claims per patent
+100%
5-year filing velocity
The verdict
Well holds 9 US patents across 2 technology areas, rank #30,580 of 50,000 tracked assignees.
- #30,580
- of 50,000 US assignees by volume
- Top 35%
- by Innovation Score (40.7/100)
- 18.4
- avg claims per patent
- +100%
- filing velocity, last 5 yrs
Portfolio overview
Well Master Corporation has been granted 9 US utility patents between 2015 and 2024, placing Well Master Corporation at rank #30,580 across all assignees tracked by PlainPatent. This portfolio spans 2 distinct Cooperative Patent Classification (CPC) subclasses, averaging 18.4 claims per patent with primary concentration in E21B (EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS). As a US Corporation, Well Master Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Well sits between Waikatolink Limited (9 patents, rank #30,576) and Whiterock Exercise, Inc. (9 patents, rank #30,584) - the closest US assignees by grant volume. The composite Innovation Score of 40.7/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.
Filing cadence tells the strategic story. Between 2020 and 2025 the company received 6 grants, compared with 3 in the 2015–2019 window, a +100% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.
Claim depth and technology breadth together indicate competitive posture. Well Master Corporation's 18.4 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while specialization in 2 subclasses reflects a tightly scoped invention area. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Well Master Corporation against peers pursuing similar technology classes.
Who files at Well's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- Waikatolink
Waikatolink Limited
9 patents
- Warburton Technol…
Warburton Technology Limited
9 patents
- Watchguard
WatchGuard Technologies, Inc.
9 patents
- Webomates
Webomates Inc.
9 patents
- Wella Germany
Wella Germany GmBH
9 patents
- Wellhead Power So…
Wellhead Power Solutions, LLC
9 patents
- Wencon Development
Wencon Development, Inc.
9 patents
- Whiterock Exercise
Whiterock Exercise, Inc.
9 patents
- Well Master ◀
Well Master Corporation
9 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.
Companies ranked near Well
By rank, the assignees closest to #30,580 in granted patent volume.
- Waikatolink Limited #30,576 · 9 patents
- Warburton Technology Limited #30,577 · 9 patents
- Watchguard Technologies, Inc. #30,578 · 9 patents
- Webomates Inc. #30,579 · 9 patents
- Wella Germany Gmbh #30,581 · 9 patents
- Wellhead Power Solutions, Llc #30,582 · 9 patents
- Wencon Development, Inc. #30,583 · 9 patents
- Whiterock Exercise, Inc. #30,584 · 9 patents
Leaders in E21B (Earth OR ROCK Drilling)
Other assignees with the most granted patents in Well's primary technology class.
- Halliburton Energy Services, Inc. 6,516 in class
- Schlumberger Technology Corporation 3,244 in class
- Saudi Arabian OIL Company 3,064 in class
- Baker Hughes Holdings Llc 1,273 in class
- Baker Hughes, A GE Company, Llc 1,107 in class
- Weatherford Technology Holdings, Llc 829 in class
- Baker Hughes Oilfield Operations Llc 598 in class
- Cameron International Corporation 514 in class
Well's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
41 Top 35% higher than 65% of 50,000 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
Grants by year
Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.
View data table
| 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
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Specialized
Claim Depth Standard
Velocity Accelerating
Frequently Asked Questions
How many patents does Well Master Corporation hold?
Well Master Corporation holds 9 US granted patents filed between 2015 and 2024, spanning 2 technology areas.
What is Well Master Corporation's Innovation Score?
Well Master Corporation has an Innovation Score of 40.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Well Master Corporation focus on?
Well Master Corporation'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 9 patents. The company has filed patents in 2 CPC subclasses total.
Is Well Master Corporation's patent filing rate increasing or decreasing?
Well Master Corporation's recent filing velocity is +100% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Well Master Corporation's patents?
Well Master Corporation's patents average 18.4 claims each. This falls within the standard range, providing solid legal coverage.
How is the Well Master 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.
How to use this portfolio
Well's 9 grants land it in the top 35% by Innovation Score, but volume alone doesn't tell you where the strength sits.
- Read that count against the largest US assignees before treating it as dominance - Well ranks #30,580 of 50,000. Top 50 holders
- Most of this portfolio concentrates in E21B - see who else leads that technology area. E21B leaders
- Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works
Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.
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.