Where does Celtic Machining Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Celtic Machining Ltd. ranks #45,542 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 Celtic Machining Ltd. hold?

Celtic Machining Ltd. holds 5 US utility patents granted 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 (15th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Celtic Machining Ltd.'s patent grant rate increasing or decreasing?

Celtic Machining Ltd.'s recent grant velocity is -33% 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 Celtic Machining Ltd.'s patents?

Celtic Machining Ltd.'s patents average 16.4 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Celtic Machining Ltd.

Q: 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, ranking #669 of 1,363 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 6 technology areas, recorded in grant years 2016–2020. 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Celtic ranks #45,542 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 6 technology areas.

#45,542
of 49,997 US assignees by volume: 15th percentile
by Innovation Score (24.7/100): 16.4
avg claims per patent: -33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R45542 · Foreign Corporation #45,542 · 5 grants

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

GRANTS-MICRO 5 grants
BOTTOM-DECILE #45,542/49,997
PHOTO-FINISH CellaGenics B V
CPC-NARROW E21B · 6 areas
INNOV-THIN 24.7/100
CLAIMS-RICH 16.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -33% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: CellaGenics B.V. (±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 Celtic’s 24.7 Innovation Score adds up

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

Volume 6.2 pts (25%) Velocity 0.0 pts (0%) Breadth 8.7 pts (35%) Claim depth 9.8 pts (40%)

Qualcomm Incorporated · highest

85
Celtic Machining · this assignee

25
3D Lighting… · lowest

7

What this shows Celtic's Innovation Score is 24.7/100 (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 Celtic?

Each dot is one of Celtic’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). Celtic’s own 16.4 claims/patent is at or below the 16.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Celtic's grants concentrate

Celtic Machining Ltd. is a focused PatentsView assignee: 6 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 2016 (2 grants) versus a trough of 1 in 2019. By volume, Celtic sits between CellaGenics B.V. and CenterCross Archery LLC.

Cellagenics B V

5
Cellfire

5
Celligence Intern…

5
Celltaxis

5
Cenergistic

5
Cengage Learning

5
Centauri

5
Centercross Arche…

5
Celtic Machining ◀

5

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.

Leaders in E21B (Earth OR Rock Drilling)

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

Celtic's Innovation Score vs. every tracked assignee

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

25 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 · 2016–2020

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Celtic Machining Ltd. patent grants by year, 2015–2025
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?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 5

B66D - CAPSTANS; WINCHES; Tackles, e.g. Pulley BLOCKS; Hoists 3

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 1

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 1

Y10T - Technical Subjects Covered BY Former US Classification 1

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 1

Top 6 of 6 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

Celtic Machining Ltd.'s patent record in context - here's where to go next.

Celtic Machining 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 #45,542 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Celtic Machining Ltd. against CellaGenics B.V., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.7/100 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

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.