CJ

Charles J. Johnston

DF Delaware Capital Formation: 14 patents #8 of 626Top 2%
ET Everett Charles Technologies: 14 patents #2 of 13Top 20%
EP Everett/Charles Contact Products: 6 patents #2 of 5Top 40%
📍 Walnut, CA: #10 of 870 inventorsTop 2%
🗺 California: #14,433 of 386,348 inventorsTop 4%
Overall (All Time): #103,796 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 26–34 of 34 patents

Patent #TitleCo-InventorsDate
D343802 Coaxial test probe Robert R. Kornowski, Charles M. Tygard 1994-02-01
5270641 Dual side access test fixture David R. Van Loan, Mark A. Swart, David Wilkie 1993-12-14
5247246 Testing of integrated circuit devices on loaded printed circuit boards David R. Van Loan, Mark A. Swart 1993-09-21
5180976 Integrated circuit carrier having built-in circuit verification David R. Van Loan, Mark A. Swart 1993-01-19
5134280 Optical fiber test probe having a sleeve-like plunger movable in a barrel Mark A. Swart 1992-07-28
5049813 Testing of integrated circuit devices on loaded printed circuit boards David R. Van Loan, Mark A. Swart 1991-09-17
5032787 Electrical test probe having rotational control of the probe shaft Mark A. Swart 1991-07-16
4983909 Repetitive-switching Mark A. Swart 1991-01-08
4720275 Quick termination apparatus and method for electrical connector Mark A. Swart 1988-01-19