Kuldip Raj

Person

Merrimack, NH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Failure indicator seal for a rotary feedthrough
- Patent number 8,531,195
- Issue date Sep 10, 2013
- Ferrotec (USA) Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Ferrofluid seal incorporating multiple types of ferrofluid
- Patent number 6,899,338
- Issue date May 31, 2005
- Ferrotec USA Corporation
- Zhixin Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Non-bursting ferrofluid seal
- Patent number 6,543,782
- Issue date Apr 8, 2003
- Ferrotec (USA) Corporation
- Ronald E. Rosensweig
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Ferrofluid sculpting apparatus
- Patent number 6,290,894
- Issue date Sep 18, 2001
- Ferrofluidics Corporation
- Kuldip Raj
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Method for recycling ferrofluid constituents used in a materials se...
- Patent number 6,254,781
- Issue date Jul 3, 2001
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
System for recycling ferrofluid constituents used in a materials se...
- Patent number 6,103,107
- Issue date Aug 15, 2000
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for manufacturing oil-based ferrofluid
- Patent number 6,068,785
- Issue date May 30, 2000
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Quiet ferrofluid solenoid
- Patent number 5,969,589
- Issue date Oct 19, 1999
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low cost method for manufacturing ferrofluid
- Patent number 5,958,282
- Issue date Sep 28, 1999
- Ferrofluidic Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Quiet ferrofluid solenoid with cushion
- Patent number 5,955,934
- Issue date Sep 21, 1999
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sensor employing a sliding ferrofluid mass in a coated, non-wetting...
- Patent number 5,908,987
- Issue date Jun 1, 1999
- Ferrofluidics Corporation
- Kuldip Raj
- G01 - MEASURING TESTING
Information Patent Grant
Stable polysiloxane ferrofluid compositions and method of making same
- Patent number 5,851,416
- Issue date Dec 22, 1998
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sensor employing a sliding magnet suspended on ferrofluid
- Patent number 5,780,741
- Issue date Jul 14, 1998
- Ferrofluidics Corporation
- Kuldip Raj
- G01 - MEASURING TESTING
Information Patent Grant
Liquid level monitoring system having ferrofluid pressure sensor
- Patent number 5,636,547
- Issue date Jun 10, 1997
- Ferrofluidics Corporation
- Kuldip Raj
- G01 - MEASURING TESTING
Information Patent Grant
Ferrofluid pressure sensor and warning device
- Patent number 5,490,425
- Issue date Feb 13, 1996
- Ferrofluidics Corporation
- Kuldip Raj
- G01 - MEASURING TESTING
Information Patent Grant
Ferrofluid-cooled electromagnetic device and improved cooling method
- Patent number 5,462,685
- Issue date Oct 31, 1995
- Ferrofluidics Corporation
- Kuldip Raj
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Loudspeaker
- Patent number 5,461,677
- Issue date Oct 24, 1995
- Ferrofluidics Corporation
- Kuldip Raj
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ferrofluid inclinometer
- Patent number 5,452,520
- Issue date Sep 26, 1995
- Ferrofluidics Corporation
- Kuldip Raj
- G01 - MEASURING TESTING
Information Patent Grant
Ferrofluid pressure sensor
- Patent number 5,429,000
- Issue date Jul 4, 1995
- Ferrofluidics Corporation
- Kuldip Raj
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Stacked pole-piece ferrofluid seal apparatus
- Patent number 5,018,751
- Issue date May 28, 1991
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Ferrofluid seal with epoxy pole pieces
- Patent number 4,927,164
- Issue date May 22, 1990
- Ferrofluidics Corporation
- Kuldip Raj
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Compact ferrofluidic electrically conducting sealed bearing
- Patent number 4,898,480
- Issue date Feb 6, 1990
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Tapered ferrofluid seal
- Patent number 4,890,850
- Issue date Jan 2, 1990
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Long-life multi-stage ferrofluid seals incorporating a ferrofluid r...
- Patent number 4,865,334
- Issue date Sep 12, 1989
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Compact long-life magnetic fluid seal
- Patent number 4,830,384
- Issue date May 16, 1989
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Compact magnetic fluid low pressure seal
- Patent number 4,824,122
- Issue date Apr 25, 1989
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Compact ferrofluidic electrically conducting sealed bearing
- Patent number 4,797,013
- Issue date Jan 10, 1989
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Compact magnetic fluid low pressure seal
- Patent number 4,772,032
- Issue date Sep 20, 1988
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method of preparing low viscosity, electrically conductive ferroflu...
- Patent number 4,732,706
- Issue date Mar 22, 1988
- Ferrofluidics Corporation
- Lucian Borduz
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Bearing assembly with integrated ferrofluid seal
- Patent number 4,692,826
- Issue date Sep 8, 1987
- Ferrofluidics Corporation
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Failure indicator seal for a rotary feedthrough
- Publication number 20120049871
- Publication date Mar 1, 2012
- FERROTEC (USA) CORPORATION
- Kuldip Raj
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Ferrofluid seal incorporating multiple types of ferrofluid
- Publication number 20040173972
- Publication date Sep 9, 2004
- Zhixin Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Person

Patents Grantslast 30 patents

Failure indicator seal for a rotary feedthrough

Ferrofluid seal incorporating multiple types of ferrofluid

Non-bursting ferrofluid seal

Ferrofluid sculpting apparatus

Method for recycling ferrofluid constituents used in a materials se...

System for recycling ferrofluid constituents used in a materials se...

Method for manufacturing oil-based ferrofluid

Quiet ferrofluid solenoid

Low cost method for manufacturing ferrofluid

Quiet ferrofluid solenoid with cushion

Sensor employing a sliding ferrofluid mass in a coated, non-wetting...

Stable polysiloxane ferrofluid compositions and method of making same

Sensor employing a sliding magnet suspended on ferrofluid

Liquid level monitoring system having ferrofluid pressure sensor

Ferrofluid pressure sensor and warning device

Ferrofluid-cooled electromagnetic device and improved cooling method

Loudspeaker

Ferrofluid inclinometer

Ferrofluid pressure sensor

Stacked pole-piece ferrofluid seal apparatus

Ferrofluid seal with epoxy pole pieces

Compact ferrofluidic electrically conducting sealed bearing

Tapered ferrofluid seal

Long-life multi-stage ferrofluid seals incorporating a ferrofluid r...

Compact long-life magnetic fluid seal

Compact magnetic fluid low pressure seal

Compact ferrofluidic electrically conducting sealed bearing

Compact magnetic fluid low pressure seal

Method of preparing low viscosity, electrically conductive ferroflu...

Bearing assembly with integrated ferrofluid seal

Patents Applicationslast 30 patents

Failure indicator seal for a rotary feedthrough

Ferrofluid seal incorporating multiple types of ferrofluid