How many patents does Charles Machine Works have in patentsdb?

Charles Machine Works is linked to 419 publications as assignee in our database.

What technology areas does Charles Machine Works patent most?

Top mapped technology areas by patent count: Fixed Constructions (316); Mechanical Engineering (99); Operations & Transport (97).

In our data, assignee counts were 39 in 2024 and 35 in 2025 (lower year over year).

See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.

Charles Machine Works holds 419 patents in our database, with recent filings and technology areas summarized below.

Year-over-year patent counts for this assignee.

Filing activity over the last five years is declining.

Latest publications where this party is an assignee.

Representative or frequently cited publications from precomputed assignee stats.

Most common classification codes in this portfolio.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Fixed Constructions	316
Mechanical Engineering	99
Operations & Transport	97
Physics	85
Electricity	29
Cross-Sectional Technologies	24
Human Necessities	4
Chemistry & Metallurgy	1

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Answers are generated from the same data shown on this page.

How many patents does Charles Machine Works have in patentsdb?: Charles Machine Works is linked to 419 publications as assignee in our database.
What technology areas does Charles Machine Works patent most?: Top mapped technology areas by patent count: Fixed Constructions (316); Mechanical Engineering (99); Operations & Transport (97).
Is Charles Machine Works's patent activity growing?: In our data, assignee counts were 39 in 2024 and 35 in 2025 (lower year over year).
What are recent patents assigned to Charles Machine Works?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.