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Johnston David A patents

Johnston David A holds 2 patents in our database, with recent filings and technology areas summarized below.

Company patent statistics
MetricValue
Total patents2
Recent patents0
First publicationJan 27, 2015
Latest publicationJun 30, 2015

Filing trend

Year-over-year patent counts for this assignee.

Not enough yearly data to assess filing trend yet.

Patents filed per year
YearPatents
20152
Browse patents by year
YearPatents
20152

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
G05B19/04262
Y02P90/022
G05B2219/231921
G05B19/0541
G05B2219/230891

Technology areas

Mapped technology topics for this assignee.

Company technology slices
TechnologyPatents
Physics2
Cross-Sectional Technologies2
Electricity1