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Roger A. Howells
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Orefield, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Liquid nitrogen immersion/impingement freezing method and apparatus
Patent number
5,417,074
Issue date
May 23, 1995
Air Products and Chemicals, Inc.
Kevin S. McAfee
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information
Patent Grant
Spiral freezer
Patent number
5,343,714
Issue date
Sep 6, 1994
Air Products and Chemicals, Inc.
Edward F. Kiczek
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Sampling apparatus for cryogenic food freezers
Patent number
5,267,490
Issue date
Dec 7, 1993
Air Products and Chemicals, Inc.
Roger A. Howells
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Method and apparatus for preventing binding and overloading of medi...
Patent number
4,959,931
Issue date
Oct 2, 1990
Air Products and Chemicals, Inc.
Roger A. Howells
B24 - GRINDING POLISHING
Information
Patent Grant
Exhaust gas media separator with recycling and dust collection
Patent number
4,958,466
Issue date
Sep 25, 1990
Air Products and Chemicals, Inc.
Roger A. Howells
B24 - GRINDING POLISHING
Information
Patent Grant
Controlled release delivery coating formulation for bioactive subst...
Patent number
4,891,223
Issue date
Jan 2, 1990
Air Products and Chemicals, Inc.
Anil S. Ambegaonkar
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Gas atomization nozzle for metal powder production
Patent number
4,880,162
Issue date
Nov 14, 1989
Air Products and Chemicals, Inc.
Roger A. Howells
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Extrusion cooler with atmosphere recycle and openable top
Patent number
4,755,118
Issue date
Jul 5, 1988
Air Products and Chemicals, Inc.
Andrew P. Ondush
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL