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Robert R. Rough Sr.
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Toledo, OH, US
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last 30 patents
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Patent Grant
Method and apparatus for preheating pulverous materials prior to th...
Patent number
4,353,726
Issue date
Oct 12, 1982
Owens-Illinois, Inc.
Robert R. Rough
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method and apparatus for preheating pulverous materials prior to th...
Patent number
4,330,315
Issue date
May 18, 1982
Owens-Illinois, Inc.
Frederick J. Nelson
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method and apparatus for preheating pulverous materials prior to th...
Patent number
4,303,434
Issue date
Dec 1, 1981
Owens-Illinois, Inc.
Robert R. Rough
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of operating tubular heat exchanger for preheating pulverous...
Patent number
4,285,718
Issue date
Aug 25, 1981
Owens-Illinois, Inc.
Richard G. Mathias
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Apparatus for refining glass
Patent number
3,992,183
Issue date
Nov 16, 1976
Owens-Illinois, Inc.
Robert R. Rough
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method and apparatus for melting glass-making materials
Patent number
3,988,138
Issue date
Oct 26, 1976
Owens-Illinois, Inc.
Robert R. Rough
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for rapidly melting and refining glass
Patent number
3,951,635
Issue date
Apr 20, 1976
Owens-Illinois, Inc.
Robert R. Rough
C03 - GLASS MINERAL OR SLAG WOOL