Growing community of inventors

San Diego, CA, United States of America

John R Purcell

Average Co-Inventor Count = 2.35

ph-index = 10

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 291

John R PurcellSibley C Burnett (12 patents)John R PurcellRaymond E Sarwinski (5 patents)John R PurcellBruce C Breneman (4 patents)John R PurcellLewis R Creedon (3 patents)John R PurcellCharles B Hood (2 patents)John R PurcellYen-Hwa L Hsu (2 patents)John R PurcellJames G Pierce (2 patents)John R PurcellWilkie Y Chen (2 patents)John R PurcellLawrence D Woolf (1 patent)John R PurcellChandrashekhar H Joshi (1 patent)John R PurcellGregory S Beck (1 patent)John R PurcellHenry G Blosser (1 patent)John R PurcellEmanuel B Jemison (1 patent)John R PurcellGabe F Blosser (1 patent)John R PurcellM Harlan Horner (1 patent)John R PurcellJerry A Selvaggi (1 patent)John R PurcellWilliam Patrick Creedon (1 patent)John R PurcellWalter E Toffolo (1 patent)John R PurcellJudson W Parker (1 patent)John R PurcellL Cullen Andrews (1 patent)John R PurcellR Lewis Creedon (1 patent)John R PurcellJohn R Purcell (24 patents)Sibley C BurnettSibley C Burnett (12 patents)Raymond E SarwinskiRaymond E Sarwinski (15 patents)Bruce C BrenemanBruce C Breneman (17 patents)Lewis R CreedonLewis R Creedon (3 patents)Charles B HoodCharles B Hood (9 patents)Yen-Hwa L HsuYen-Hwa L Hsu (8 patents)James G PierceJames G Pierce (3 patents)Wilkie Y ChenWilkie Y Chen (2 patents)Lawrence D WoolfLawrence D Woolf (25 patents)Chandrashekhar H JoshiChandrashekhar H Joshi (12 patents)Gregory S BeckGregory S Beck (10 patents)Henry G BlosserHenry G Blosser (6 patents)Emanuel B JemisonEmanuel B Jemison (4 patents)Gabe F BlosserGabe F Blosser (4 patents)M Harlan HornerM Harlan Horner (2 patents)Jerry A SelvaggiJerry A Selvaggi (2 patents)William Patrick CreedonWilliam Patrick Creedon (2 patents)Walter E ToffoloWalter E Toffolo (1 patent)Judson W ParkerJudson W Parker (1 patent)L Cullen AndrewsL Cullen Andrews (1 patent)R Lewis CreedonR Lewis Creedon (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Ga Technologies, Inc. (8 from 75 patents)

2. General Atomics, Inc. (3 from 321 patents)

3. Cdc Partners (3 from 3 patents)

4. Advanced Cryo Magnetics, Inc. (3 from 3 patents)

5. Other (1 from 832,718 patents)

6. Michigan State University (1 from 1,415 patents)

7. The United States of America As Represented by the United States Energy (1 from 461 patents)

8. Outokumpu Oyj (1 from 177 patents)

9. General Atomic Company (1 from 128 patents)

10. Eriez Manufacturing Co. (1 from 29 patents)

11. Phpk Technologies Inc. (1 from 4 patents)


24 patents:

1. 6112399 - Magnetic separator having an improved separation container configuration

2. 5697220 - Refrigeration of superconducting magnet systems

3. 5495718 - Refrigeration of superconducting magnet systems

4. 5237738 - Method of manufacturing a containment vessel for use with a pulsed

5. 5148137 - Containment vessel for use with a pulsed magnet system and method of

6. 5047192 - Process of manufacturing a cryogenic regenerator

7. 5019247 - Pulsed magnet system

8. 4931759 - Magnetic resonance imaging magnet having minimally symmetric

9. 4930314 - Stirling cycle machine

10. 4866943 - Cyrogenic regenerator

11. 4841268 - MRI Magnet system with permanently installed power leads

12. 4768008 - MRI magnet system with vessel having composite first wall

13. 4743880 - MRI magnet system having shield and method of manufacture

14. 4702825 - Superconductor high gradient magnetic separator

15. 4694269 - Magnet system and method of its manufacture

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as of
12/10/2025
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