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Welch John patents

Welch John holds 4 patents in our database, with recent filings and technology areas summarized below.

Company patent statistics
MetricValue
Total patents4
Recent patents0
First publicationMay 3, 2018
Latest publicationSep 6, 2022

Filing trend

Year-over-year patent counts for this assignee.

Filing activity appears to be declining based on the most recent years.

Patents filed per year
YearPatents
20181
20192
20221
Browse patents by year
YearPatents
20181
20192
20221

Recent patents

Latest publications where this party is an assignee.

Notable patents

Representative or frequently cited publications from precomputed assignee stats.

Top CPC classifications

Most common classification codes in this portfolio.

Top CPC codes by patent count
CPCPatents
F42B3/044
E21B23/0654
F42B3/224
E21B33/121

Technology areas

Mapped technology topics for this assignee.

Company technology slices
TechnologyPatents
Fixed Constructions4
Mechanical Engineering4