Overall rank by patents
#45,785
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Celtic Machining Ltd.
USPTO PatentsView assignee record - 5 granted patents across 6 technology areas, active 2016–2020. 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).
5
Total patents granted
6
CPC technology areas
16.4
Avg claims per patent
-33%
5-year filing velocity
The verdict
Celtic holds 5 US patents across 6 technology areas, rank #45,785 of 50,000 tracked assignees.
- #45,785
- of 50,000 US assignees by volume
- Top 85%
- by Innovation Score (24.7/100)
- 16.4
- avg claims per patent
- -33%
- filing velocity, last 5 yrs
Portfolio overview
Celtic Machining Ltd. has been granted 5 US utility patents between 2016 and 2020, placing Celtic Machining Ltd. at rank #45,785 across all assignees tracked by PlainPatent. This portfolio spans 6 distinct Cooperative Patent Classification (CPC) subclasses, averaging 16.4 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 Foreign Corporation, Celtic Machining Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Celtic sits between Cellagenics B.v. (5 patents, rank #45,781) and Centercross Archery Llc (5 patents, rank #45,789) - the closest US assignees by grant volume. The composite Innovation Score of 24.7/100 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 2 grants, compared with 3 in the 2015–2019 window, a -33% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign 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. Celtic Machining Ltd.'s 16.4 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 6 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Celtic Machining Ltd. against peers pursuing similar technology classes.
Who files at Celtic's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- Cellagenics B V
CellaGenics B.V.
5 patents
- Cellfire
Cellfire LLC
5 patents
- Celligence Intern…
Celligence International LLC
5 patents
- Celltaxis
Celltaxis, LLC
5 patents
- Cenergistic
Cenergistic LLC
5 patents
- Cengage Learning
Cengage Learning, Inc.
5 patents
- Centauri
Centauri, LLC
5 patents
- Centercross Arche…
CenterCross Archery LLC
5 patents
- Celtic Machining ◀
Celtic Machining Ltd.
5 patents
What this shows Celtic holds 5 patents at rank #45,785, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
Companies ranked near Celtic
By rank, the assignees closest to #45,785 in granted patent volume.
- Cellagenics B.v. #45,781 · 5 patents
- Cellfire Llc #45,782 · 5 patents
- Celligence International Llc #45,783 · 5 patents
- Celltaxis, Llc #45,784 · 5 patents
- Cenergistic Llc #45,786 · 5 patents
- Cengage Learning, Inc. #45,787 · 5 patents
- Centauri, Llc #45,788 · 5 patents
- Centercross Archery Llc #45,789 · 5 patents
Leaders in E21B (Earth OR ROCK Drilling)
Other assignees with the most granted patents in Celtic'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
Celtic's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
25 Top 85% higher than 15% 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 2016–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2016 | 2 | 40.0% |
| 2019 | 1 | 20.0% |
| 2020 | 2 | 40.0% |
Which technologies does Celtic Machining Ltd. patent most?
Top 6 of 6 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Focused
Claim Depth Standard
Velocity Declining
Frequently Asked Questions
How many patents does Celtic Machining Ltd. hold?
Celtic Machining Ltd. holds 5 US granted patents filed between 2016 and 2020, spanning 6 technology areas.
What is Celtic Machining Ltd.'s Innovation Score?
Celtic Machining Ltd. has an Innovation Score of 24.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Celtic Machining Ltd. focus on?
Celtic Machining Ltd.'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 5 patents. The company has filed patents in 6 CPC subclasses total.
Is Celtic Machining Ltd.'s patent filing rate increasing or decreasing?
Celtic Machining Ltd.'s recent filing velocity is -33% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for Celtic Machining Ltd.'s patents?
Celtic Machining Ltd.'s patents average 16.4 claims each. This falls within the standard range, providing solid legal coverage.
How is the Celtic Machining Ltd. 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
Celtic's 5 grants land it in the top 85% 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 - Celtic ranks #45,785 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.