Inventor · disambiguated record
Kuldip Raj
Also filed as: RAJ KULDIP
53 granted patents·1,758 citations·filing 1979–2010
99Inventor score
Top patents by PatentIndex Score
53 records- 0197US4604229AElectrically conductive ferrofluid compositions and method of preparing and using sameFERROFLUIDICS CORP·Filed 1985·Granted Aug 5, 1986·79 cites·24 claims
- 0294US4673997AElectrically conductive ferrofluid bearing and seal apparatus and low-viscosity electrically conductive ferrofluid used thereinFERROFLUIDICS CORP·Filed 1985·Granted Jun 16, 1987·61 cites·17 claims
- 0393US4604222AStable ferrofluid composition and method of making and using sameFERROFLUIDICS CORP·Filed 1985·Granted Aug 5, 1986·60 cites·30 claims
- 0492US4407508ASingle-pole-piece ferrofluid seal apparatus and exclusion seal systemFERROFLUIDICS CORP·Filed 1982·Granted Oct 4, 1983·54 cites·13 claims
- 0591US4898480ACompact ferrofluidic electrically conducting sealed bearingFERROFLUIDICS CORP·Filed 1988·Granted Feb 6, 1990·57 cites·18 claims
- 0690US4687596ALow viscosity, electrically conductive ferrofluid composition and method of making and using sameFERROFLUIDICS CORP·Filed 1986·Granted Aug 18, 1987·52 cites·23 claims
- 0789US4628384ABearing assembly with integrated ferrofluid sealFERROFLUIDICS CORP·Filed 1984·Granted Dec 9, 1986·46 cites·15 claims
- 0887US5462685AFerrofluid-cooled electromagnetic device and improved cooling methodFERROFLUIDICS CORP·Filed 1993·Granted Oct 31, 1995·44 cites·24 claims
- 0987US4824122ACompact magnetic fluid low pressure sealFERROFLUIDICS CORP·Filed 1988·Granted Apr 25, 1989·35 cites·14 claims
- 1087US4732706AMethod of preparing low viscosity, electrically conductive ferrofluid compositionFERROFLUIDICS CORP·Filed 1987·Granted Mar 22, 1988·46 cites·13 claims
- 1187US4575102ACoaxial, multiple-shaft ferrofluid seal apparatusFERROFLUIDICS CORP·Filed 1984·Granted Mar 11, 1986·40 cites·7 claims
- 1286US4357024AFerrofluid rotary-shaft seal apparatus and methodFERROFLUIDICS CORP·Filed 1980·Granted Nov 2, 1982·39 cites·18 claims
- 1385US6543782B1Non-bursting ferrofluid sealFERROTEC USA CORP·Filed 2001·Granted Apr 8, 2003·27 cites·28 claims
- 1485US4692826ABearing assembly with integrated ferrofluid sealFERROFLUIDICS CORP·Filed 1986·Granted Sep 8, 1987·44 cites·15 claims
- 1585US4407518ANonbursting multiple-stage ferrofluid seal and systemFERROFLUIDICS CORP·Filed 1983·Granted Oct 4, 1983·41 cites·15 claims
- 1684US4527805AHigh-pressure ferrofluid seal apparatusFERROFLUIDICS CORP·Filed 1984·Granted Jul 9, 1985·34 cites·10 claims
- 1784US4506895ASelf-activating ferrofluid seal apparatus and method of useFERROFLUIDICS CORP·Filed 1984·Granted Mar 26, 1985·35 cites·18 claims
- 1883US5955934AQuiet ferrofluid solenoid with cushionFERROFLUIDICS CORP·Filed 1998·Granted Sep 21, 1999·32 cites·18 claims
- 1983US5452520AFerrofluid inclinometerFERROFLUIDICS CORP·Filed 1994·Granted Sep 26, 1995·65 cites·10 claims
- 2083US4797013ACompact ferrofluidic electrically conducting sealed bearingFERROFLUIDICS CORP·Filed 1987·Granted Jan 10, 1989·39 cites·9 claims
- 2182US5908987ASensor employing a sliding ferrofluid mass in a coated, non-wetting, housingFERROFLUIDICS CORP·Filed 1997·Granted Jun 1, 1999·45 cites·12 claims
- 2282US4531846ACompact ferrofluid seal and bearing assemblyFERROFLUIDICS CORP·Filed 1983·Granted Jul 30, 1985·32 cites·8 claims
- 2382US4502700AFerrofluid linear seal apparatusFERROFLUIDICS CORP·Filed 1984·Granted Mar 5, 1985·32 cites·19 claims
- 2482US4445696ANonbursting magnetic liquid seals for high vacuum applicationsFERROFLUIDICS CORP·Filed 1983·Granted May 1, 1984·38 cites·14 claims
- 2581US4526382ARadially polarized multiple-stage ferrofluid seal apparatusFERROFLUIDICS CORP·Filed 1984·Granted Jul 2, 1985·31 cites·12 claims
- 2680US4252353ASelf-activating ferrofluid sealsFERROFLUIDICS CORP·Filed 1979·Granted Feb 24, 1981·34 cites·26 claims
- 2779US5969589AQuiet ferrofluid solenoidFERROFLUIDICS CORP·Filed 1996·Granted Oct 19, 1999·27 cites·22 claims
- 2876US5780741ASensor employing a sliding magnet suspended on ferrofluidFERROFLUIDICS CORP·Filed 1997·Granted Jul 14, 1998·59 cites·20 claims
- 2975US4772032ACompact magnetic fluid low pressure sealFERROFLUIDICS CORP·Filed 1987·Granted Sep 20, 1988·20 cites·14 claims
- 3075US4252328ASelf-activating ferrofluid seal and methodFERROFLUIDICS CORP·Filed 1980·Granted Feb 24, 1981·27 cites·30 claims
- 3174US6899338B2Ferrofluid seal incorporating multiple types of ferrofluidFERROTEC USA CORP·Filed 2003·Granted May 31, 2005·15 cites·22 claims
- 3273US5461677ALoudspeakerFERROFLUIDICS CORP·Filed 1994·Granted Oct 24, 1995·55 cites·7 claims
- 3373US4830384ACompact long-life magnetic fluid sealFERROFLUIDICS CORP·Filed 1987·Granted May 16, 1989·29 cites·5 claims
- 3473US4526380ASingle pole piece multiple-stage ferrofluid seal apparatusFERROFLUIDICS CORP·Filed 1984·Granted Jul 2, 1985·25 cites·13 claims
- 3573US4526379AStabilized ferrofluid-ferrofluid seal apparatus and methodFERROFLUIDICS CORP·Filed 1984·Granted Jul 2, 1985·25 cites·19 claims
- 3672US6254781B1Method for recycling ferrofluid constituents used in a materials separation processFERROFLUIDICS CORP·Filed 2000·Granted Jul 3, 2001·14 cites·9 claims
- 3769US4357022AFerrofluid rotary-shaft seal apparatus and methodFERROFLUIDICS CORP·Filed 1980·Granted Nov 2, 1982·23 cites·22 claims
- 3868US4478424AFerrofluid seal apparatus and methodFERROFLUIDICS CORP·Filed 1984·Granted Oct 23, 1984·23 cites·20 claims
- 3968US4340233AFerrofluid seal apparatusFERROFLUIDICS CORP·Filed 1980·Granted Jul 20, 1982·22 cites·17 claims
- 4066US5851416AStable polysiloxane ferrofluid compositions and method of making sameFERROFLUIDICS CORP·Filed 1997·Granted Dec 22, 1998·21 cites·7 claims
- 4165US6290894B1Ferrofluid sculpting apparatusFERROFLUIDICS CORP·Filed 1999·Granted Sep 18, 2001·44 cites·4 claims
- 4265US5429000AFerrofluid pressure sensorFERROFLUIDICS CORP·Filed 1993·Granted Jul 4, 1995·18 cites·9 claims
- 4363US4890850ATapered ferrofluid sealFERROFLUIDICS CORP·Filed 1988·Granted Jan 2, 1990·21 cites·20 claims
- 4463US4865334ALong-life multi-stage ferrofluid seals incorporating a ferrofluid reservoirFERROFLUIDICS CORP·Filed 1988·Granted Sep 12, 1989·22 cites·19 claims
- 4560US6068785AMethod for manufacturing oil-based ferrofluidFERROFLUIDICS CORP·Filed 1998·Granted May 30, 2000·17 cites·14 claims
- 4660US4357021AFerrofluid rotary-shaft seal apparatus and methodFERROFLUIDICS CORP·Filed 1980·Granted Nov 2, 1982·21 cites·20 claims
- 4757US5490425AFerrofluid pressure sensor and warning deviceFERROFLUIDICS CORP·Filed 1994·Granted Feb 13, 1996·19 cites·12 claims
- 4856US5018751AStacked pole-piece ferrofluid seal apparatusFERROFLUIDICS CORP·Filed 1989·Granted May 28, 1991·19 cites·17 claims
- 4952US6103107ASystem for recycling ferrofluid constituents used in a materials separation processFERROFLUIDICS CORP·Filed 1998·Granted Aug 15, 2000·10 cites·9 claims
- 5049US5636547ALiquid level monitoring system having ferrofluid pressure sensorFERROFLUIDICS CORP·Filed 1994·Granted Jun 10, 1997·17 cites·27 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →