Inventor · disambiguated record
W. Ralph Knowles
Also filed as: KNOWLES W RALPH
6 granted patents·334 citations·filing 1993–2004
88Inventor score
Technology areasH01J
Top patents by PatentIndex Score
6 records- 0192US5362964AEnvironmental scanning electron microscopeELECTROSCAN CORP·Filed 1993·Granted Nov 8, 1994·83 cites·56 claims
- 0291US5412211AEnvironmental scanning electron microscopeELECTROSCAN CORP·Filed 1994·Granted May 2, 1995·83 cites·68 claims
- 0388US6979822B1Charged particle beam systemFEI CO·Filed 2004·Granted Dec 27, 2005·48 cites·26 claims
- 0482US5828064AField emission environmental scanning electron microscopePHILIPS ELECTRONICS NA·Filed 1996·Granted Oct 27, 1998·44 cites·37 claims
- 0581US5945672AGaseous backscattered electron detector for an environmental scanning electron microscopeFEI CO·Filed 1998·Granted Aug 31, 1999·44 cites·45 claims
- 0674US6025592AHigh temperature specimen stage and detector for an environmental scanning electron microscopePHILIPS ELECTRONICS NA·Filed 1996·Granted Feb 15, 2000·32 cites·82 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →