Where does The Charles Machine Works, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), The Charles Machine Works, Inc. ranks #1,927 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 The Charles Machine Works, Inc. hold?

The Charles Machine Works, Inc. holds 209 US utility patents granted between 2015 and 2025, spanning 59 technology areas.

What is The Charles Machine Works, Inc.'s Innovation Score?

The Charles Machine Works, Inc. has an Innovation Score of 59.6 out of 100 (top 4% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is The Charles Machine Works, Inc.'s patent grant rate increasing or decreasing?

The Charles Machine Works, Inc.'s recent grant velocity is +68% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for The Charles Machine Works, Inc.'s patents?

The Charles Machine Works, Inc.'s patents average 17.0 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 The Charles Machine Works, Inc. 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 US Corporation

The Charles Machine Works, Inc.

Q: What technology areas does The Charles Machine Works, Inc. focus on?

The Charles Machine Works, Inc.'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 107 patents. Grants appear in 59 CPC subclasses total.

USPTO PatentsView assignee record - 209 granted patents across 59 technology areas, recorded in grant years 2015–2025. 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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The verdict

According to USPTO PatentsView, The ranks #1,927 of 49,997 tracked US assignees by granted-patent volume, with 209 patents across 59 technology areas.

#1,927
of 49,997 US assignees by volume: Top 4%
by Innovation Score (59.6/100): 17.0
avg claims per patent: +68%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1927 · US Corporation #1,927 · 209 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 209 grants
TOP-DECILE #1,927/49,997
PHOTO-FINISH Institute of…
CPC-WIDE E21B · 59 areas
INNOV-PAR 59.6/100
CLAIMS-RICH 17.0 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +68% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Institute of Geology and Geophysics, Chinese Academy of Sciences (±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.

Qualcomm Incorporated · highest

85
Nivarox-FAR · near

60
Boise State University · near

60
Disco · near

60
Hunter Douglas · near

60
The Charles Machine… · this assignee

60
3D Lighting… · lowest

7

What this shows The's Innovation Score is 59.6/100 (top 4% 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.

How The's grant cadence moved

Between 2020–2024, The Charles Machine Works, Inc. received 121 grants versus 72 in 2015–2019 (+68% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2021 at 30 grants and bottomed in 2016 at 6. Lead class E21B accounts for 51.2% of the portfolio across 59 subclasses. Volume neighbours: Institute of Geology and Geophysics, Chinese Academy of Sciences (#1,923) and Medtronic Ardian Luxembourg S.A.R.L. (#1,931).

The's three-year grant acceleration

From 2019–2021 to 2022–2024, The Charles Machine Works, Inc. moved from 75 to 67 grants (0.89x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,504. See the growth leaderboard.

Institute of Geol…

209
Lego A/S

209
Nabors Drilling U…

209
Shure Acquisition…

209
The Charles Machi… ◀

209
Becton Dickinson…

208
Fiskars Finland O…

208
JT International

208
Medtronic Ardian…

208

What this shows The holds 209 patents at rank #1,927, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near The

By rank, the assignees closest to #1,927 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for The, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (60 here).

Hunter Douglas Inc. 60 Disco Corporation 60 Boise State University 60 Nivarox-FAR S.A. 60

Similar claim depth

Nearest assignees by average claims per patent (17.0 here).

Danmarks Tekniske Universitet 17.0 avg Ambu A/S 17.0 avg ASM IP Holding B.V. 17.0 avg Convatec Technologies Inc. 17.0 avg

The's Innovation Score vs. every tracked assignee

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

60 Top 4% higher than 96% 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 · 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

The Charles Machine Works, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	8	3.8%
2016	6	2.9%
2017	21	10.0%
2018	16	7.7%
2019	21	10.0%
2020	24	11.5%
2021	30	14.4%
2022	19	9.1%
2023	26	12.4%
2024	22	10.5%
2025partial year	16	7.7%

Which technologies does The Charles Machine Works, Inc. patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 107

E02F - DREDGING; Soil-shifting 42

G01V - GEOPHYSICS; Gravitational MEASUREMENTS; Detecting Masses OR OBJECTS; Tags 23

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 13

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 11

B01D - Separation 10

Y10T - Technical Subjects Covered BY Former US Classification 9

B62D - Motor VEHICLES; Trailers 9

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 7

F16H - Gearing 7

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 6

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 6

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 6

H01Q - Antennas, i.e. Radio Aerials 6

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 6

Top 15 of 59 technology areas

Where it ranks

Overall rank by patents

#1,927

of 49,997 tracked assignees

Innovation Score

59.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

The Charles Machine Works, Inc.'s patent record in context - here's where to go next.

The Charles Machine Works, Inc.'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), 51.2% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #1,927 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare The Charles Machine Works, Inc. against Institute of Geology and Geophysics, Chinese Academy of Sciences, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 59.6/100 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.