Inventor
Edward L. Griffin
Inventor
Roanoke, VA, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Pprimary
H01PWaveguides43%
H10DInorganic electric semiconductor devices19%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1014%
H05KPrinted circuits10%
H03FAmplifiers5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
6,559,513'Field-plate MESFET'20036,236,070'MES/MIS FET'20016,005,267'MES/MIS FET with split-gate RF input'19995,965,935'Low loss ridged microstrip line for monolithic microwave integrated circuit (MMIC) applications'19995,753,968'Low loss ridged microstrip line for monolithic microwave integrated circuit (MMIC) applications'19985,172,072'High efficiency harmonic injection power amplifier'19924,956,308'Method of making self-aligned field-effect transistor'19904,701,573'Semiconductor chip housing'19874,647,878'Coaxial shielded directional microwave coupler'19874,488,131'MIC Dual mode ring resonator filter'19844,410,865'Spherical cavity microwave filter'19834,291,288'Folded end-coupled general response filter'19814,291,287'Evanescent mode filter'19814,262,269'Q Enhanced resonator'19814,241,323'Reflective dual mode filter'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1984Patents assigned to HUGHES AIRCRAFT CO (6)· patent assignee history
1980–1983Based in Huntington Beach, CA, US· patent location history
1984–2003Based in Roanoke, VA, US· patent location history
1987–1999Patents assigned to ITT (6)· patent assignee history
1987Patents assigned to ITT GALLIUM ARSENIDE TECH (1)· patent assignee history
2001Patents assigned to TYCO ELECTRONICS LOGISTICS AG (1)· patent assignee history
2003Patents assigned to MA COM INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUGHES AIRCRAFT CO | 6 | 1980–1984 |
| ITT | 6 | 1987–1999 |
| ITT GALLIUM ARSENIDE TECH | 1 | 1987 |
| MA COM INC | 1 | 2003 |
| TYCO ELECTRONICS LOGISTICS AG | 1 | 2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Roanoke, Virginia, US | 10 | 1984–2003 |
| Huntington Beach, California, US | 5 | 1980–1983 |