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Patent applications and USPTO patent grants for Chappell; William Johnson.The latest application filed is for "dielectric substrate with selectively controlled effective permittivity and loss tangent".
Patent | Date |
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Dielectric substrate with selectively controlled effective permittivity and loss tangent Grant 6,992,636 - Tebbe , et al. January 31, 2 | 2006-01-31 |
Dielectric substrate with selectively controlled effective permittivity and loss tangent App 20050200532 - Tebbe, Dennis ;   et al. | 2005-09-15 |
Dielectric substrate with selectively controlled effective permittivity and loss tangent Grant 6,911,941 - Tebbe , et al. June 28, 2 | 2005-06-28 |
Dielectric substrate with selectively controlled effective permittivity and loss tangent App 20040257279 - Tebbe, Dennis ;   et al. | 2004-12-23 |
Planar filters having periodic electromagnetic bandgap substrates Grant 6,825,741 - Chappell , et al. November 30, 2 | 2004-11-30 |
Planar filters having periodic electromagnetic bandgap substrates App 20030020567 - Chappell, William Johnson ;   et al. | 2003-01-30 |
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