LONGSWORTH; Ralph C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for LONGSWORTH; Ralph C..The latest application filed is for "reversible pneumatic drive expander".
Company Profile
2.47.26
- LONGSWORTH; Ralph C. - Mount Desert ME
- Longsworth; Ralph C. - Allentown PA
- Longsworth, Ralph C - Allentown PA
Patent Activity
| Patent | Date |
|---|---|
| Reversible Pneumatic Drive Expander App 20220065499 - LONGSWORTH; Ralph C. ; et al. | 2022-03-03 |
| Co-axial Double-inlet Valve For Pulse Tube Cryocooler App 20220065500 - LEI; Tian ; et al. | 2022-03-03 |
| Hybrid Double-inlet Valve For Pulse Tube Cryocooler App 20220049878 - XU; Mingyao ; et al. | 2022-02-17 |
| Dual Helium Compressors App 20220003462 - SEITZ; Eric Robert ; et al. | 2022-01-06 |
| Hybrid Gifford-McMahon-Brayton expander Grant 11,215,385 - Longsworth January 4, 2 | 2022-01-04 |
| Dual helium compressors Grant 11,149,992 - Seitz , et al. October 19, 2 | 2021-10-19 |
| Gas balanced engine with buffer Grant 11,137,181 - Longsworth October 5, 2 | 2021-10-05 |
| Split Pulse Tube Connecting Line App 20210301957 - XU; Mingyao ; et al. | 2021-09-30 |
| Heat Station For Cooling A Circulating Cryogen App 20200318864 - Longsworth; Ralph C. | 2020-10-08 |
| Heat station for cooling a circulating cryogen Grant 10,753,653 - Longsworth A | 2020-08-25 |
| System for warming-up and cooling-down a superconducting magnet Grant 10,704,809 - Longsworth , et al. | 2020-07-07 |
| Cryogenic expander with collar bumper for reduced noise and vibration characteristics Grant 10,634,393 - Longsworth | 2020-04-28 |
| System For Warming-up And Cooling-down A Superconducting Magnet App 20190316813 - LONGSWORTH; Ralph C. ; et al. | 2019-10-17 |
| Heat Station For Cooling A Circulating Cryogen App 20190309994 - Longsworth; Ralph C. | 2019-10-10 |
| Helium compressor with dual after-coolers Grant 10,240,832 - Sloan , et al. | 2019-03-26 |
| Gas Balanced Engine With Buffer App 20180066878 - LONGSWORTH; Ralph C. | 2018-03-08 |
| Cryogenic Expander With Collar Bumper For Reduced Noise And Vibration Characteristics App 20180023849 - Longsworth; Ralph C. | 2018-01-25 |
| Cold Start Helium Compressor App 20170175743 - Dunn; Stephen ; et al. | 2017-06-22 |
| Dual Helium Compressors App 20170176055 - Seitz; Eric Robert ; et al. | 2017-06-22 |
| Helium Compressor With Dual After-coolers App 20170176070 - Sloan; R Bruce ; et al. | 2017-06-22 |
| HYBRID GIFFORD-McMAHON - BRAYTON EXPANDER App 20160216010 - Longsworth; Ralph C. | 2016-07-28 |
| Horizontal bulk oil separator Grant 8,187,370 - Dunn , et al. May 29, 2 | 2012-05-29 |
| Hybrid spool valve for multi-port pulse tube Grant 7,997,088 - Longsworth August 16, 2 | 2011-08-16 |
| Wearless valve for cryorefrigerator Grant 7,631,505 - Seitz , et al. December 15, 2 | 2009-12-15 |
| Hybrid Spool Valve For Multi-port Pulse Tube App 20090151803 - Longsworth; Ralph C. | 2009-06-18 |
| Refrigerator with magnetic shield Grant 7,500,366 - Xu , et al. March 10, 2 | 2009-03-10 |
| Cryopump App 20080184712 - Longsworth; Ralph C. | 2008-08-07 |
| Horizontal bulk oil separator App 20080011550 - Dunn; Stephen B. ; et al. | 2008-01-17 |
| Pulse tube cooling by circulation of buffer gas Grant 7,305,835 - Longsworth December 11, 2 | 2007-12-11 |
| Refrigerator with magnetic shield App 20070130961 - Xu; Mingyao ; et al. | 2007-06-14 |
| Wearless valve for cryorefrigerator App 20070107442 - Seitz; Eric ; et al. | 2007-05-17 |
| Panels for pulse tube cryopump Grant 7,201,004 - Longsworth April 10, 2 | 2007-04-10 |
| Fast warm up pulse tube Grant 7,191,600 - Gao , et al. March 20, 2 | 2007-03-20 |
| Integral pulse tube refrigerator and cryopump Grant 7,165,406 - Longsworth January 23, 2 | 2007-01-23 |
| Fast warm up pulse tube App 20050115247 - Gao, Jin Lin ; et al. | 2005-06-02 |
| Cryopump control system App 20050034465 - Borchers, John ; et al. | 2005-02-17 |
| Panels for pulse tube cryopump App 20050011200 - Longsworth, Ralph C. | 2005-01-20 |
| Pulse tube cooling by circulation of buffer gas App 20050000232 - Longsworth, Ralph C. | 2005-01-06 |
| Wired and wireless methods for client and server side authentication App 20040261423 - Longsworth, Ralph C | 2004-12-30 |
| Pulse tube integral flow smoother Grant 6,715,300 - Longsworth April 6, 2 | 2004-04-06 |
| Two-stage inter-phasing pulse tube refrigerators with and without shared buffer volumes Grant 6,629,418 - Gao , et al. October 7, 2 | 2003-10-07 |
| Fail-safe oil lubricated helium compressor unit with oil-free gas delivery App 20030010574 - Longsworth, Ralph C. | 2003-01-16 |
| Fail-safe oil lubricated helium compressor unit with oil-free gas delivery Grant 6,488,120 - Longsworth December 3, 2 | 2002-12-03 |
| Pulse tube integral flow smoother App 20020152758 - Longsworth, Ralph C. | 2002-10-24 |
| High efficiency throttle cryogenic refrigerator based on one stage compressor Grant 5,706,663 - Boiarski , et al. January 13, 1 | 1998-01-13 |
| Throttle cycle cryopumping system for Group I gases Grant 5,687,574 - Longsworth , et al. November 18, 1 | 1997-11-18 |
| Vibrationally isolated thermal system for a cryogenically cooled device Grant 5,628,195 - Hill , et al. May 13, 1 | 1997-05-13 |
| Closed cycle cryogenic refrigeration system with automatic variable flow area throttling device Grant 5,595,065 - Boiarski , et al. January 21, 1 | 1997-01-21 |
| MRI cryostat cooled by open and closed cycle refrigeration systems Grant 5,586,437 - Blecher , et al. December 24, 1 | 1996-12-24 |
| Cryostat refrigeration system using mixed refrigerants in a closed vapor compression cycle having a fixed flow restrictor Grant 5,579,654 - Longsworth , et al. December 3, 1 | 1996-12-03 |
| Means and apparatus for convectively cooling a superconducting magnet Grant 5,461,873 - Longsworth October 31, 1 | 1995-10-31 |
| Cryo-probe Grant 5,452,582 - Longsworth September 26, 1 | 1995-09-26 |
| Sealed dewar with separate circulation loop for external cooling at constant pressure Grant 5,402,648 - Longsworth April 4, 1 | 1995-04-04 |
| Cryogenic refrigerator with single stage compressor Grant 5,337,572 - Longsworth August 16, 1 | 1994-08-16 |
| Parallel wrapped tube heat exchanger Grant 4,785,879 - Longsworth , et al. * November 22, 1 | 1988-11-22 |
| Heat exchanger for a fast cooldown cryostat Grant 4,781,033 - Steyert , et al. November 1, 1 | 1988-11-01 |
| Dual thermal coupling Grant 4,606,201 - Longsworth August 19, 1 | 1986-08-19 |
| Parallel wrapped tube heat exchanger Grant 4,567,943 - Longsworth , et al. February 4, 1 | 1986-02-04 |
| Bakeable cryopump Grant 4,514,204 - Bonney , et al. April 30, 1 | 1985-04-30 |
| Apparatus for condensing liquid cryogen boil-off Grant 4,484,458 - Longsworth November 27, 1 | 1984-11-27 |
| Cryogenic air sampler Grant 4,283,948 - Longsworth August 18, 1 | 1981-08-18 |
| Removable refrigerator for maintaining liquefied gas inventory Grant 4,279,127 - Longsworth July 21, 1 | 1981-07-21 |
| Cryopumping apparatus Grant 4,277,951 - Longsworth July 14, 1 | 1981-07-14 |
| Cryostat with serviceable refrigerator Grant 4,277,949 - Longsworth July 14, 1 | 1981-07-14 |
| Variable flow cryostat with dual orifice Grant 4,237,699 - Longsworth , et al. December 9, 1 | 1980-12-09 |
| Dewar and removable refrigerator for maintaining liquefied gas inventory Grant 4,223,540 - Longsworth September 23, 1 | 1980-09-23 |
| Bimaterial demand flow cryostat Grant 4,152,903 - Longsworth May 8, 1 | 1979-05-08 |
| Cryopumping method and apparatus Grant 4,150,549 - Longsworth April 24, 1 | 1979-04-24 |
| Vibration-free refrigeration transfer Grant 3,894,403 - Longsworth July 15, 1 | 1975-07-15 |
| Cryogenic Refrigeration System Grant 3,728,868 - Longsworth April 24, 1 | 1973-04-24 |
| Cryogenic Refrigeration System With Dual Circuit Heat Exchanger Grant 3,714,796 - Longsworth February 6, 1 | 1973-02-06 |
| Flexible Cryogenic Liquid Transfer System And Improved Support Means Therefor Grant 3,706,208 - Kadi , et al. December 19, 1 | 1972-12-19 |
| Liquid Cryogen Transfer System Grant 3,696,627 - Longsworth October 10, 1 | 1972-10-10 |
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