Inventor · disambiguated record
John R. Purcell
Also filed as: PURCELL JOHN R
25 granted patents·493 citations·filing 1976–1998
97Inventor score
Files withGA TECHNOLOGIES INC8ADVANCED CRYO MAGNETICS INC3CDC PARTNERS3GEN ATOMICS3PHPK TECHNOLOGIES INC2
Top patents by PatentIndex Score
25 records- 0196US4038622ASuperconducting dipole electromagnetUS ENERGY·Filed 1976·Granted Jul 26, 1977·64 cites·5 claims
- 0292US4633125AVented 360 degree rotatable vessel for containing liquidsUNIV MICHIGAN STATE·Filed 1985·Granted Dec 30, 1986·70 cites·11 claims
- 0384US4841268AMRI Magnet system with permanently installed power leadsGEN ATOMICS·Filed 1987·Granted Jun 20, 1989·44 cites·11 claims
- 0475US4625193AMagnet lead assemblyGA TECHNOLOGIES INC·Filed 1984·Granted Nov 25, 1986·19 cites·10 claims
- 0574US4702825ASuperconductor high gradient magnetic separatorERIEZ MFG CO·Filed 1984·Granted Oct 27, 1987·29 cites·20 claims
- 0673US4369636AMethods and apparatus for reducing heat introduced into superconducting systems by electrical leadsGEN ATOMIC CO·Filed 1981·Granted Jan 25, 1983·36 cites·10 claims
- 0770US4658229AMagnet system providing a region of substantially homogeneous field strengthGA TECHNOLOGIES INC·Filed 1985·Granted Apr 14, 1987·28 cites·18 claims
- 0869US4694269AMagnet system and method of its manufactureGA TECHNOLOGIES INC·Filed 1984·Granted Sep 15, 1987·23 cites·17 claims
- 0968US4931759AMagnetic resonance imaging magnet having minimally symmetric ferromagnetic shieldGEN ATOMICS·Filed 1989·Granted Jun 5, 1990·23 cites·7 claims
- 1066US4743880AMRI magnet system having shield and method of manufactureGA TECHNOLOGIES INC·Filed 1987·Granted May 10, 1988·22 cites·11 claims
- 1165US4768008AMRI magnet system with vessel having composite first wallGEN ATOMICS·Filed 1987·Granted Aug 30, 1988·21 cites·11 claims
- 1263US4866943ACyrogenic regeneratorCDC PARTNERS·Filed 1988·Granted Sep 19, 1989·20 cites·9 claims
- 1361US4680936ACryogenic magnet systemsGA TECHNOLOGIES INC·Filed 1985·Granted Jul 21, 1987·21 cites·2 claims
- 1457US4647888AHigh heat capacity composites for a superconductorGA TECHNOLOGIES INC·Filed 1985·Granted Mar 3, 1987·11 cites·16 claims
- 1555US5697220ARefrigeration of superconducting magnet systemsPHPK TECHNOLOGIES INC·Filed 1996·Granted Dec 16, 1997·11 cites·24 claims
- 1650US4602231ASpaced stabilizing means for a superconducting switchGA TECHNOLOGIES INC·Filed 1984·Granted Jul 22, 1986·11 cites·8 claims
- 1743US5019247APulsed magnet systemADVANCED CRYO MAGNETICS INC·Filed 1989·Granted May 28, 1991·10 cites·16 claims
- 1842US5495718ARefrigeration of superconducting magnet systemsFiled 1994·Granted Mar 5, 1996·6 cites·28 claims
- 1938US5148137AContainment vessel for use with a pulsed magnet system and method of manufacturing sameADVANCED CRYO MAGNETICS INC·Filed 1991·Granted Sep 15, 1992·7 cites·6 claims
- 2037USRE36332ERefrigeration of superconducting magnet systemPHPK TECHNOLOGIES INC·Filed 1998·Granted Oct 12, 1999·4 cites·28 claims
- 2135US4528609AMethod and apparatus for protecting superconducting magnetic energy storage systems during rapid energy dissipationGA TECHNOLOGIES INC·Filed 1982·Granted Jul 9, 1985·4 cites·9 claims
- 2230US5237738AMethod of manufacturing a containment vessel for use with a pulsed magnet systemADVANCED CRYO MAGNETICS INC·Filed 1991·Granted Aug 24, 1993·4 cites·5 claims
- 2329US5047192AProcess of manufacturing a cryogenic regeneratorCDC PARTNERS·Filed 1989·Granted Sep 10, 1991·2 cites·4 claims
- 2428US4930314AStirling cycle machineCDC PARTNERS·Filed 1989·Granted Jun 5, 1990·2 cites·9 claims
- 2522US6112399AMagnetic separator having an improved separation container configuration for use with a superconductive electromagnetOUTOKUMPU OY·Filed 1996·Granted Sep 5, 2000·1 cites·17 claims
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