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Allentown, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Pulse tube integral flow smoother
Patent number
6,715,300
Issue date
Apr 6, 2004
IGC-APD Cryogenics
Ralph C. Longsworth
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Low vibration throttling device for throttle-cycle refrigerators
Patent number
5,875,651
Issue date
Mar 2, 1999
APD Cryogenics, Inc.
Dennis Hill
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Precooled vapor-liquid refrigeration cycle
Patent number
5,729,993
Issue date
Mar 24, 1998
APD Cryogenics Inc.
Mikhail Boiarski
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
High efficiency throttle cryogenic refrigerator based on one stage...
Patent number
5,706,663
Issue date
Jan 13, 1998
APD Cryogenics, Inc.
Mikhail Boiarski
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Throttle cycle cryopumping system for Group I gases
Patent number
5,687,574
Issue date
Nov 18, 1997
APD Cryogenics, Inc.
Ralph C. Longsworth
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Vibrationally isolated thermal system for a cryogenically cooled de...
Patent number
5,628,195
Issue date
May 13, 1997
APD Cryogenics, Inc.
Dennis Hill
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Closed cycle cryogenic refrigeration system with automatic variable...
Patent number
5,595,065
Issue date
Jan 21, 1997
APD Cryogenics
Michael Boiarski
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Cryostat refrigeration system using mixed refrigerants in a closed...
Patent number
5,579,654
Issue date
Dec 3, 1996
APD Cryogenics, Inc.
Ralph C. Longsworth
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Means and apparatus for convectively cooling a superconducting magnet
Patent number
5,461,873
Issue date
Oct 31, 1995
APD Cryogenics Inc.
Ralph C. Longsworth
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Crysostat for very stable temperature maintenance
Patent number
5,457,961
Issue date
Oct 17, 1995
APD Cryogenics Inc.
Ralph C. Longsworth
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Cryo-probe
Patent number
5,452,582
Issue date
Sep 26, 1995
APD Cryogenics, Inc.
Ralph C. Longsworth
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Cryogenic mixed gas refrigerant for operation within temperature ra...
Patent number
5,441,658
Issue date
Aug 15, 1995
APD Cryogenics, Inc.
Mikhail Boyarsky
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Substitute refrigerant for dichlorodifluoromethane refrigeration sy...
Patent number
5,425,890
Issue date
Jun 20, 1995
APD Cryogenics, Inc.
Boris V. Yudin
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Sealed dewar with separate circulation loop for external cooling at...
Patent number
5,402,648
Issue date
Apr 4, 1995
APD Cryogenics Inc.
Ralph C. Longsworth
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Continuous flow cryogen sublimation cooler
Patent number
5,385,027
Issue date
Jan 31, 1995
APD Cryogenics, Inc.
Ralph C. Longsworth
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic refrigerator with single stage compressor
Patent number
5,337,572
Issue date
Aug 16, 1994
APD Cryogenics, Inc.
Ralph C. Longsworth
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryostat throttle
Patent number
5,313,801
Issue date
May 24, 1994
APD Cryogenics, Inc.
Glenn Bonney
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Venting control system for cryostats
Patent number
5,249,425
Issue date
Oct 5, 1993
APD Cryogenics Inc.
Ralph C. Longsworth
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Method and apparatus for collecting liquid cryogen
Patent number
5,243,826
Issue date
Sep 14, 1993
APD Cryogenics Inc.
Ralph C. Longsworth
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Cryogen thermal storage matrix
Patent number
5,012,650
Issue date
May 7, 1991
APD Cryogenics, Inc.
Ralph Longsworth
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Parallel wrapped tube heat exchanger
Patent number
4,785,879
Issue date
Nov 22, 1988
APD Cryogenics
Ralph C. Longsworth
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Heat exchanger for a fast cooldown cryostat
Patent number
4,781,033
Issue date
Nov 1, 1988
APD Cryogenics
William A. Steyert
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Parallel wrapped tube heat exchanger
Patent number
4,697,635
Issue date
Oct 6, 1987
APD Cryogenics Inc.
Ralph C. Longsworth
F28 - HEAT EXCHANGE IN GENERAL
Patents Applications
last 30 patents
Trademark
last 30 trademarks
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Trademark
76210506 - FREEDOM
Serial number
76210506
Registration number
2952095
Filing date
Feb 14, 2001
APD CRYOGENICS, INC.
7 - Machines and machine tools
Information
Trademark
76135190 - WHISPER PLUS
Serial number
76135190
Filing date
Sep 26, 2000
APD CRYOGENICS INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
76135189 - WHISPER
Serial number
76135189
Registration number
2847852
Filing date
Sep 26, 2000
APD CRYOGENICS INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75492018 - SPRINT
Serial number
75492018
Registration number
2771915
Filing date
May 28, 1998
APD CRYOGENICS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
75117162 - AQUATRAP
Serial number
75117162
Registration number
2107973
Filing date
Jun 11, 1996
APD CRYOGENICS, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74584421 - CRYOTIGER
Serial number
74584421
Registration number
1940820
Filing date
Oct 11, 1994
APD CRYOGENICS, INC.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
74571328 - OMNIPLEX
Serial number
74571328
Registration number
2003515
Filing date
Sep 8, 1994
APD CRYOGENICS INC.
7 - Machines and machine tools
Information
Trademark
74316332 - MARATHON
Serial number
74316332
Registration number
1864182
Filing date
Sep 21, 1992
APD CRYOGENICS INC.
7 - Machines and machine tools