Inventor · disambiguated record
Carl B. Freidhoff
Also filed as: FREIDHOFF CARL B · FREIDHOFF CARL BALDWIN
27 granted patents·4 pending applications·1,201 citations·filing 1988–2023
97Inventor score
Files withNORTHROP GRUMMAN CORP16NORTHROP GRUMMAN SYSTEMS CORP7WESTINGHOUSE ELECTRIC CORP5EATON CORP1PENN STATE RES FOUND1
Top patents by PatentIndex Score
31 records- 0199US5659171AMicro-miniature diaphragm pump for the low pressure pumping of gasesNORTHROP GRUMMAN CORP·Filed 1994·Granted Aug 19, 1997·299 cites·11 claims
- 0297US7423751B2Systems and methods for use in detecting harmful aerosol particlesNORTHROP GRUMMAN CORP·Filed 2006·Granted Sep 9, 2008·70 cites·8 claims
- 0397US5536939AMiniaturized mass filterNORTHROP GRUMMAN CORP·Filed 1994·Granted Jul 16, 1996·149 cites·13 claims
- 0494US5912606AMercury wetted switchNORTHROP GRUMMAN CORP·Filed 1998·Granted Jun 15, 1999·145 cites·12 claims
- 0594US5386115ASolid state micro-machined mass spectrograph universal gas detection sensorWESTINGHOUSE ELECTRIC CORP·Filed 1993·Granted Jan 31, 1995·96 cites·20 claims
- 0693US7767959B1Miniature mass spectrometer for the analysis of chemical and biological solid samplesNORTHROP GRUMMAN CORP·Filed 2007·Granted Aug 3, 2010·18 cites·24 claims
- 0791US7045459B2Thin film encapsulation of MEMS devicesNORTHROP GRUMMAN CORP·Filed 2002·Granted May 16, 2006·45 cites·25 claims
- 0890US7554663B2Systems and methods for use in detecting harmful aerosol particlesNORTHROP GRUMMAN CORP·Filed 2006·Granted Jun 30, 2009·13 cites·55 claims
- 0988US7875941B2Thin film encapsulation of MEMS devicesNORTHROP GRUMMAN CORP·Filed 2009·Granted Jan 25, 2011·10 cites·5 claims
- 1088US7402799B2MEMS mass spectrometerNORTHROP GRUMMAN CORP·Filed 2005·Granted Jul 22, 2008·11 cites·17 claims
- 1188US5492867AMethod for manufacturing a miniaturized solid state mass spectrographWESTINGHOUSE ELECTRIC CORP·Filed 1994·Granted Feb 20, 1996·62 cites·18 claims
- 1288US5481110AThin film preconcentrator arrayWESTINGHOUSE ELECTRIC CORP·Filed 1994·Granted Jan 2, 1996·84 cites·16 claims
- 1388US5466932AMicro-miniature piezoelectric diaphragm pump for the low pressure pumping of gasesWESTINGHOUSE ELECTRIC CORP·Filed 1994·Granted Nov 14, 1995·55 cites·29 claims
- 1487US7649171B1Miniature mass spectrometer for the analysis of biological small moleculesNORTHROP GRUMMAN CORP·Filed 2007·Granted Jan 19, 2010·9 cites·17 claims
- 1587US7576844B2Systems and methods for use in detecting harmful aerosol particlesNORTHROP GRUMMAN CORP·Filed 2006·Granted Aug 18, 2009·10 cites·19 claims
- 1685US5747815AMicro-miniature ionizer for gas sensor applications and method of making micro-miniature ionizerNORTHROP GRUMMAN CORP·Filed 1996·Granted May 5, 1998·48 cites·7 claims
- 1779US4880947AVacuum interrupter with simplified enclosure and method of assemblyWESTINGHOUSE ELECTRIC CORP·Filed 1988·Granted Nov 14, 1989·23 cites·20 claims
- 1877US10755827B1Radiation shieldNORTHROP GRUMMAN SYSTEMS CORP·Filed 2019·Granted Aug 25, 2020·1 cites·20 claims
- 1977US7638429B2Thin film encapsulation of MEMS devicesNORTHROP GRUMMAN CORP·Filed 2006·Granted Dec 29, 2009·4 cites·19 claims
- 2076US2023411134A1Tapered magnetic ion transport tunnel for particle collectionNORTHROP GRUMMAN SYSTEMS CORP·Filed 2023·Application pending·0 cites
- 2169US11749515B2Tapered magnetic ion transport tunnel for particle collectionNORTHROP GRUMMAN SYSTEMS CORP·Filed 2020·Granted Sep 5, 2023·0 cites·6 claims
- 2266US7057170B2Compact ion gauge using micromachining and MISOC devicesNORTHROP GRUMMAN CORP·Filed 2004·Granted Jun 6, 2006·6 cites·20 claims
- 2364US7786653B2MEMS piezoelectric switchNORTHROP GRUMMAN SYSTEMS CORP·Filed 2007·Granted Aug 31, 2010·4 cites·7 claims
- 2457US2020152437A1Tapered magnetic ion transport tunnel for particle collectionNORTHROP GRUMMAN SYSTEMS CORP·Filed 2018·Application pending·0 cites
- 2554US5330088AElectrical contact containing a braze diffusion barrierEATON CORP·Filed 1993·Granted Jul 19, 1994·15 cites·14 claims
- 2652US5530244ASolid state detector for sensing low energy charged particlesNORTHROP GRUMMAN CORP·Filed 1994·Granted Jun 25, 1996·13 cites·6 claims
- 2750US7378782B2IDT electroded piezoelectric diaphragmsPENN STATE RES FOUND·Filed 2004·Granted May 27, 2008·4 cites·24 claims
- 2846US2008009687A1Coiled circuit bio-sensorSMITH JOSEPH T·Filed 2007·Application pending·0 cites
- 2944US2009081828A1MEMS Fabrication MethodNORTHROP GRUMMAN SYSTEMS CORP·Filed 2007·Application pending·0 cites
- 3041US10319572B2Space ion analyzer with mass spectrometer on a chip (MSOC) using floating MSOC voltagesNORTHROP GRUMMAN SYSTEMS CORP·Filed 2017·Granted Jun 11, 2019·0 cites·20 claims
- 3139US6191754B1Antenna system using time delays with mercury wetted switchesNORTHROP GRUMMAN CORP·Filed 1999·Granted Feb 20, 2001·7 cites·13 claims
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