Johnston; Charles J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnston; Charles J..The latest application filed is for "spring contact assembly".
- Johnston; Charles J. - Chino Hills CA
- Johnston; Charles J. - Walnut CA
| Patent | Date |
|---|---|
| Spring contact assembly Grant 8,523,579 - Johnston , et al. September 3, 2 | 2013-09-03 |
| Spring Contact Assembly App 20120282821 - Johnston; Charles J. ; et al. | 2012-11-08 |
| Spring contact assembly Grant 8,231,416 - Johnston , et al. July 31, 2 | 2012-07-31 |
| Flat plunger round barrel test probe Grant 8,105,119 - Swart , et al. January 31, 2 | 2012-01-31 |
| Spring Contact Assembly App 20110039457 - Johnston; Charles J. ; et al. | 2011-02-17 |
| Spring contact assembly Grant 7,862,391 - Johnston , et al. January 4, 2 | 2011-01-04 |
| Flat Plunger Round Barrel Test Probe App 20100197176 - Swart; Mark A. ; et al. | 2010-08-05 |
| Spring Contact Assembly App 20090075529 - Johnston; Charles J. ; et al. | 2009-03-19 |
| Self-retained spring probe Grant 6,462,567 - Vinther , et al. October 8, 2 | 2002-10-08 |
| Self-closing spring probe Grant 6,396,293 - Vinther , et al. May 28, 2 | 2002-05-28 |
| Coaxial Tilt Pin Fixture For Testing High Frequency Circuit Boards App 20010050571 - JOHNSTON, CHARLES J. | 2001-12-13 |
| Test socket App 20010000947 - Swart, Mark A. ; et al. | 2001-05-10 |
| Solid spring electrical contacts for electrical connectors and probes Grant 5,865,641 - Swart , et al. February 2, 1 | 1999-02-02 |
| Test probe plunger tip Grant D400,811 - Swart , et al. November 10, 1 | 1998-11-10 |
| Hollow plunger test probe Grant 5,781,023 - Swart , et al. July 14, 1 | 1998-07-14 |
| One-piece compliant probe Grant 5,667,410 - Johnston September 16, 1 | 1997-09-16 |
| Test module hanger for test fixtures Grant 5,444,387 - Van Loan , et al. August 22, 1 | 1995-08-22 |
| Twisting electrical test probe with controlled pointing accuracy Grant 5,391,995 - Johnston , et al. February 21, 1 | 1995-02-21 |
| Test fixture alignment system Grant 5,321,351 - Swart , et al. June 14, 1 | 1994-06-14 |
| Dual side access test fixture Grant 5,270,641 - Van Loan , et al. December 14, 1 | 1993-12-14 |
| Testing of integrated circuit devices on loaded printed circuit boards Grant 5,247,246 - Van Loan , et al. * September 21, 1 | 1993-09-21 |
| Integrated circuit carrier having built-in circuit verification Grant 5,180,976 - Van Loan , et al. January 19, 1 | 1993-01-19 |
| Optical fiber test probe having a sleeve-like plunger movable in a barrel Grant 5,134,280 - Johnston , et al. July 28, 1 | 1992-07-28 |
| Testing of integrated circuit devices on loaded printed circuit boards Grant 5,049,813 - Van Loan , et al. September 17, 1 | 1991-09-17 |
| Electrical test probe having rotational control of the probe shaft Grant 5,032,787 - Johnston , et al. July 16, 1 | 1991-07-16 |
| Repetitive-switching Grant 4,983,909 - Swart , et al. January 8, 1 | 1991-01-08 |
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