Patent assignee · US · COMPANY

NP Industries, Inc.

6Patents
0Active
6Granted
28Portfolio score

Filing activity: Jan 12, 1979 → Oct 23, 1980

Most-cited patents

PatentTitleAreaCited byStatus
US4254482A Echo location system which provides for measuring liquid level and flow rate and flow volume of flowing liquids Electricity 15 Expired
US4202211A Flow measuring system Physics 14 Expired
US4326173A Digital phase locked loop frequency control system Physics 13 Expired
US4217777A Flow measuring system Physics 9 Expired
US4317184A Dual slope compensation apparatus Emerging Cross-Sectional Technologies 3 Expired
US4272761A Operations control system Physics 2 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.