Robert H. Mellen Sr.

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New London, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Thermal distortion free viewing of a heated cavity
- Patent number 4,931,624
- Issue date Jun 5, 1990
- Robert H. Mellen
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Thermal distortion free viewing of a heated cavity
- Patent number 4,833,303
- Issue date May 23, 1989
- Robert H. Mellen
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Method of providing a dynamic temperature gradient
- Patent number 4,518,351
- Issue date May 21, 1985
- Robert H. Mellen
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Dynamic gradient furnace with controlled heat dissipation
- Patent number 4,423,516
- Issue date Dec 27, 1983
- Robert H. Mellen
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Dynamic gradient furnace and method
- Patent number 4,086,424
- Issue date Apr 25, 1978
- Robert H. Mellen
- C30 - CRYSTAL GROWTH