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Butler David Charles Donnell patents

Butler David Charles Donnell holds 7 patents in our database, with recent filings and technology areas summarized below.

Company patent statistics
MetricValue
Total patents7
Recent patents1
First publicationMar 28, 2017
Latest publicationJul 13, 2023

Filing trend

Year-over-year patent counts for this assignee.

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20171
20191
20202
20221
20232
Browse patents by year
YearPatents
20171
20191
20202
20221
20232

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
C07H1/004
C07H21/003
C07H21/043
C12N15/1113
C12N2310/143

Technology areas

Mapped technology topics for this assignee.

Company technology slices
TechnologyPatents
Chemistry & Metallurgy7
Human Necessities4