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Patent Assignment Details

NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Reel/Frame:	005481/0243			Pages:	16
		Recorded:	10/18/1990
Conveyance:	SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 66

Patent #:	3612549	Issue Dt:	10/12/1971	Application #:	05040155	Filing Dt:	05/25/1970
Title:

Patent #:	3620584	Issue Dt:	11/16/1971	Application #:	05040246	Filing Dt:	05/25/1970
Title:	MAGNETIC FLUID SEALS

Patent #:	3648269	Issue Dt:		Application #:	05055392	Filing Dt:
Title:

Patent #:	3734578	Issue Dt:		Application #:	05186926	Filing Dt:
Title:

Patent #:	3917538	Issue Dt:	11/04/1975	Application #:	05324414	Filing Dt:	01/17/1973
Title:	FERRO FLUID COMPOSITIONS AND PROCESS OF MAKING SAME

Patent #:	4171818	Issue Dt:		Application #:	05784036	Filing Dt:
Title:

Patent #:	4123675	Issue Dt:		Application #:	05805643	Filing Dt:
Title:

Patent #:	4207293	Issue Dt:	06/10/1980	Application #:	05857331	Filing Dt:	12/05/1977
Title:	DIAMETER CONTROL IN CRYSTAL ROD PULLING

Patent #:	4207293	Issue Dt:	06/10/1980	Application #:	05857331	Filing Dt:	12/05/1977
Title:	DIAMETER CONTROL IN CRYSTAL ROD PULLING

Patent #:	4200296	Issue Dt:	04/29/1980	Application #:	05964601	Filing Dt:	11/29/1978
Title:	FERROFLUID CENTRIFUGAL SEAL

Patent #:	4252353	Issue Dt:	02/24/1981	Application #:	06033466	Filing Dt:	04/26/1979
Title:	SELF-ACTIVATING FERROFLUID SEALS

Patent #:	4252328	Issue Dt:	02/24/1981	Application #:	06145828	Filing Dt:	05/01/1980
Title:	SELF-ACTIVATING FERROFLUID SEAL AND METHOD

Patent #:	4284605	Issue Dt:	08/18/1981	Application #:	06149141	Filing Dt:	05/14/1980
Title:	LINEAR DRIVE SHAFT SEAL

Patent #:	4309040	Issue Dt:	01/05/1982	Application #:	06155949	Filing Dt:	06/03/1980
Title:	LINEAR SEAL APPARATUS

Patent #:	4301120	Issue Dt:	11/17/1981	Application #:	06183540	Filing Dt:	09/02/1980
Title:	CHAIN INTRODUCTION MEANS FOR A CRYSTAL GROWTH PULLING HEAD

Patent #:	4356098	Issue Dt:	10/26/1982	Application #:	06187317	Filing Dt:	09/15/1980
Title:	STABLE FERROFLUID COMPOSITIONS AND METHOD OF MAKING SAME

Patent #:	4357021	Issue Dt:	11/02/1982	Application #:	06208287	Filing Dt:	11/19/1980
Title:	FERROFLUID ROTARYSHAFT SEAL

Patent #:	4357022	Issue Dt:	11/02/1982	Application #:	06208288	Filing Dt:	11/19/1980
Title:	FERROFLUID ROTARY-SHAFT SEAL APPARATUS AND METHOD

Patent #:	4357023	Issue Dt:	11/02/1982	Application #:	06208289	Filing Dt:	11/19/1980
Title:	FERROFLUID ROTARY-SHAFT SEAL APPARATUS AND METHOD

Patent #:	4357024	Issue Dt:	11/02/1982	Application #:	06208290	Filing Dt:	11/19/1980
Title:	FERROFLUID ROTARY-SHAFT SEAL APPARATUS AND METHOD

Patent #:	4340233	Issue Dt:	07/20/1982	Application #:	06208438	Filing Dt:	11/19/1980
Title:	FERROFLUID SEAL APPARATUS

Patent #:	4315827	Issue Dt:	02/16/1982	Application #:	06234561	Filing Dt:	02/13/1981
Title:	LOW-VAPOR-PRESSURE FERROFLUIDS AND METHOD OF MAKING SAME

Patent #:	4371502	Issue Dt:	02/01/1983	Application #:	06249196	Filing Dt:	03/30/1981
Title:	CRYSTAL GROWING FURNACE PULLING HEAD

Patent #:	4350557	Issue Dt:	09/21/1982	Application #:	06257591	Filing Dt:	04/27/1981
Title:	METHOD FOR CIRCUMFERENTIAL DIMENSION MEASURING CONTROL IN CRYSTAL ROD PULLING

Patent #:	4406731	Issue Dt:	09/27/1983	Application #:	06271980	Filing Dt:	06/09/1981
Title:	APPARATUS FOR AND METHOD OF SEALING SHAFTS IN CRYSTAL-GROWING FURNACE SYSTEMS

Patent #:	4350560	Issue Dt:	09/21/1982	Application #:	06298242	Filing Dt:	08/07/1981
Title:	APPARATUS FOR AND METHOD OF HANDLING CRYSTALS FRM CRYSTAL-GROWING FURNACES

Patent #:	4407508	Issue Dt:	10/04/1983	Application #:	06450339	Filing Dt:	12/16/1982
Title:	SINGLE-POLE-PIECE FERROFLUID SEAL APPARATUS AND EXCLUSION SEAL SYSTEM

Patent #:	4407518	Issue Dt:	10/04/1983	Application #:	06455065	Filing Dt:	01/05/1983
Title:	NONBURSTING MULTIPLE-STAGE FERROFLUID SEAL AND SYSTEM

Patent #:	4430239	Issue Dt:	02/07/1984	Application #:	06464480	Filing Dt:	02/07/1983
Title:	FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME

Patent #:	4444398	Issue Dt:	04/24/1984	Application #:	06468333	Filing Dt:	02/22/1983
Title:	SELF-ACTIVATING FERROFLUID SEAL APPARATUS AND METHOD

Patent #:	4445696	Issue Dt:	05/01/1984	Application #:	06468339	Filing Dt:	02/22/1983
Title:	NONBURSTING MAGNETIC LIQUID SEALS FOR HIGH VACUUM APPLICATIONS

Patent #:	4489950	Issue Dt:	12/25/1984	Application #:	06497856	Filing Dt:	05/25/1983
Title:	FERROFLUID-POLE-PIECE-MAGNET APPARATUS

Patent #:	4526484	Issue Dt:	07/02/1985	Application #:	06534415	Filing Dt:	09/21/1983
Title:	FERROFLUID THRUST AND RADIAL BEARING ASSEMBLY

Patent #:	4531846	Issue Dt:	07/30/1985	Application #:	06565333	Filing Dt:	12/27/1983
Title:	COMPACT FERROFLUID SEAL AND BEARING ASSEMBLY

Patent #:	4628384	Issue Dt:	12/09/1986	Application #:	06569189	Filing Dt:	01/09/1984
Title:	BEARING ASSEMBLY WITH INTEGRATED FERROFLUID SEAL

Patent #:	4526379	Issue Dt:	07/02/1985	Application #:	06569190	Filing Dt:	01/09/1984
Title:	STABILIZED FERROFLUID-FERROFLUID SEAL APPARATUS AND METHOD

Patent #:	4526380	Issue Dt:	07/02/1985	Application #:	06574358	Filing Dt:	01/27/1984
Title:	SINGLE POLE PIECE MULTIPLE-STAGE FERROFLUID SEAL APPARATUS

Patent #:	4478424	Issue Dt:	10/23/1984	Application #:	06574359	Filing Dt:	01/27/1984
Title:	FERROFLUID SEAL APPARATUS AND METHOD

Patent #:	4527805	Issue Dt:	07/09/1985	Application #:	06606582	Filing Dt:	05/03/1984
Title:	HIGH-PRESSURE FERROFLUID SEAL APPARATUS

Patent #:	4502700	Issue Dt:	03/05/1985	Application #:	06606585	Filing Dt:	05/03/1984
Title:	FERROFLUID LINEAR SEAL APPARATUS

Patent #:	4526382	Issue Dt:	07/02/1985	Application #:	06606586	Filing Dt:	05/03/1984
Title:	RADIALLY POLARIZED MULTIPLE-STAGE FERROFLUID SEAL APPARATUS

Patent #:	4506895	Issue Dt:	03/26/1985	Application #:	06645399	Filing Dt:	08/29/1984
Title:	SELF-ACTIVATING FERROFLUID SEAL APPARATUS AND METHOD OF USE

Patent #:	4506895	Issue Dt:	03/26/1985	Application #:	06645399	Filing Dt:	08/29/1984
Title:	SELF-ACTIVATING FERROFLUID SEAL APPARATUS AND METHOD OF USE

Patent #:	4545587	Issue Dt:	10/08/1985	Application #:	06673545	Filing Dt:	11/20/1984
Title:	COAXIAL, MULTIPLE-SHAFT FERROFLUID SEAL APPARATUS

Patent #:	4575102	Issue Dt:	03/11/1986	Application #:	06673550	Filing Dt:	11/20/1984
Title:	COAXIAL, MULTIPLE-SHAFT FERROFLUID SEAL APPARATUS

Patent #:	4663128	Issue Dt:	05/05/1987	Application #:	06709056	Filing Dt:	03/06/1985
Title:	PULLING HEAD FOR A CRYSTAL GROWING FURNACE

Patent #:	4604229	Issue Dt:	08/05/1986	Application #:	06713757	Filing Dt:	03/20/1985
Title:	ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITIONS AND METHOD OF PREPARING AND USING SAME

Patent #:	4604222	Issue Dt:	08/05/1986	Application #:	06736388	Filing Dt:	05/21/1985
Title:	STABLE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME

Patent #:	4673997	Issue Dt:	06/16/1987	Application #:	06773627	Filing Dt:	09/09/1985
Title:	ELECTRICALLY CONDUCTIVE FERROFLUID BEARING AND SEAL APPARATUS AND LOW- VISCOSITY ELECTRICALLY CONDUCTIVE FERROFLUID USED THEREIN

Patent #:	4817964	Issue Dt:	04/04/1989	Application #:	06779983	Filing Dt:	09/25/1985
Title:	FERROFLUID EXCLUSION SEAL AND METHOD OF ASSEMBLY

Patent #:	4630943	Issue Dt:	12/23/1986	Application #:	06833841	Filing Dt:	02/26/1986
Title:	FERROFLUID BEARING AND SEAL APPARATUS

Patent #:	4692826	Issue Dt:	09/08/1987	Application #:	06851799	Filing Dt:	04/14/1986
Title:	BEARING ASSEMBLY WITH INTEGRATED FERROFLUID SEAL

Patent #:	4687596	Issue Dt:	08/18/1987	Application #:	06875985	Filing Dt:	06/19/1986
Title:	LOW VISCOSITY, ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME

Patent #:	4687596	Issue Dt:	08/18/1987	Application #:	06875985	Filing Dt:	06/19/1986
Title:	LOW VISCOSITY, ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME

Patent #:	4694213	Issue Dt:	09/15/1987	Application #:	06933485	Filing Dt:	11/21/1986
Title:	FERROFLUID SEAL FOR A STATIONARY SHAFT AND A ROTATING HUB

Patent #:	4797013	Issue Dt:	01/10/1989	Application #:	07012193	Filing Dt:	02/09/1987
Title:	COMPACT FERROFLUIDIC ELECTRICALLY CONDUCTING SEALED BEARING

Patent #:	4772032	Issue Dt:	09/20/1988	Application #:	07020460	Filing Dt:	03/02/1987
Title:	COMPACT MAGNETIC FLUID LOW PRESSURE SEAL

Patent #:	4732706	Issue Dt:	03/22/1988	Application #:	07054412	Filing Dt:	05/26/1987
Title:	LOW VISCOSITY, ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME

Patent #:	4830384	Issue Dt:	05/16/1989	Application #:	07068012	Filing Dt:	06/29/1987
Title:	COMPACT LONG-LIFE MAGNETIC FLUID SEAL

Patent #:	4890850	Issue Dt:	01/02/1990	Application #:	07182510	Filing Dt:	04/18/1988
Title:	TAPERED FERROFLUID SEAL

Patent #:	4824122	Issue Dt:	04/25/1989	Application #:	07215735	Filing Dt:	07/06/1988
Title:	COMPACT MAGNETIC FLUID LOW PRESSURE SEAL

Patent #:	4927164	Issue Dt:	05/22/1990	Application #:	07229640	Filing Dt:	08/08/1988
Title:	FERROFLUID SEAL WITH EPOXY POLE PIECES

Patent #:	4898480	Issue Dt:	02/06/1990	Application #:	07263539	Filing Dt:	10/27/1988
Title:	COMPACT FERROFLUIDIC ELECTRICALLY CONDUCTING SEALED BEARING

Patent #:	4865334	Issue Dt:	09/12/1989	Application #:	07267263	Filing Dt:	11/04/1988
Title:	LONG-LIFE MULTI-STAGE FERROFLUID SEALS INCORPORATING A FERROFLUID RESERVOIR

Patent #:	3977739	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3612630	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Assignor

FERROFLUIDICS CORPORATION, A CORP MA

Exec Dt:

10/13/1990

Assignee

FLEET NATIONAL BANK

111 WESTMINSTER STREET

PROVIDENCE, RHODE ISLAND 02903

Correspondence name and address
	BROWN RUDNICK FREED & GESMER
	ONE FINANCIAL CENTER
	BOSTON, MA 02111

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