Inventor · disambiguated record
Richard F. Hellbaum
Also filed as: HELLBAUM RICHARD F
10 granted patents·1 pending application·807 citations·filing 1995–2005
93Inventor score
Top patents by PatentIndex Score
11 records- 0198US5632841AThin layer composite unimorph ferroelectric driver and sensorNASA·Filed 1995·Granted May 27, 1997·250 cites·8 claims
- 0296US6060811AAdvanced layered composite polylaminate electroactive actuator and sensorNASA·Filed 1997·Granted May 9, 2000·214 cites·11 claims
- 0394US6629341B2Method of fabricating a piezoelectric composite apparatusNASA·Filed 1999·Granted Oct 7, 2003·116 cites·15 claims
- 0488US7197798B2Method of fabricating a composite apparatusNASA·Filed 2003·Granted Apr 3, 2007·36 cites·24 claims
- 0587US6071087AFerroelectric pumpNASA·Filed 1997·Granted Jun 6, 2000·66 cites·14 claims
- 0670US6734603B2Thin layer composite unimorph ferroelectric driver and sensorNASA·Filed 1997·Granted May 11, 2004·25 cites·8 claims
- 0770US5802195AHigh displacement solid state ferroelectric loudspeakerUS ARMY·Filed 1997·Granted Sep 1, 1998·52 cites·13 claims
- 0858US5867991AFerroelectric Stirling-cycle refrigeratorNASA·Filed 1997·Granted Feb 9, 1999·20 cites·24 claims
- 0948US6259188B1Piezoelectric vibrational and acoustic alert for a personal communication devicePROJECTS UNLTD INC·Filed 1999·Granted Jul 10, 2001·25 cites·42 claims
- 1043US2006016055A1Piezoelectric composite apparatus and a method for fabricating the sameNASA·Filed 2005·Application pending·0 cites
- 1130US5961096AFerroelectric fluid flow control valveNASA·Filed 1997·Granted Oct 5, 1999·3 cites·9 claims
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