Charles D. Dern

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Doylestown, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Energy recovery in a freeze-drying system
- Patent number 11,181,320
- Issue date Nov 23, 2021
- SP INDUSTRIES, INC.
- Charles D. Dern
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Means and methods for selective shelf temperature control
- Patent number 10,976,104
- Issue date Apr 13, 2021
- SP INDUSTRIES, INC.
- Charles D. Dern
- F26 - DRYING
Information Patent Grant
Energy recovery in a freeze-drying system
- Patent number 10,782,070
- Issue date Sep 22, 2020
- SP INDUSTRIES, INC.
- Charles D. Dern
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Energy recovery in a freeze-drying system
- Patent number 10,113,797
- Issue date Oct 30, 2018
- SP Industries, Inc.
- Charles D. Dern
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES

Patents Applicationslast 30 patents

Information Patent Application
ENERGY RECOVERY IN A FREEZE-DRYING SYSTEM
- Publication number 20200370829
- Publication date Nov 26, 2020
- SP INDUSTRIES, INC.
- Charles D. Dern
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Application
MEANS AND METHODS FOR SELECTIVE SHELF TEMPERATURE CONTROL
- Publication number 20190285341
- Publication date Sep 19, 2019
- SP INDUSTRIES, INC.
- Charles D. Dern
- F26 - DRYING
Information Patent Application
ENERGY RECOVERY IN A FREEZE-DRYING SYSTEM
- Publication number 20190032996
- Publication date Jan 31, 2019
- SP INDUSTRIES, INC.
- Charles D. Dern
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
ENERGY RECOVERY IN A FREEZE-DRYING SYSTEM
- Publication number 20180073806
- Publication date Mar 15, 2018
- SP INDUSTRIES, INC.
- Charles D. Dern
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
REPEATED STERILE USE OF A GAUGE IN A STEAM STERILIZABLE FREEZE-DRYI...
- Publication number 20180071415
- Publication date Mar 15, 2018
- SP INDUSTRIES, INC.
- Charles D. Dern
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE