Robert H. Johns

Person

Natrona Heights, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus for determining surface profiles of metallic workpieces
- Patent number 4,897,925
- Issue date Feb 6, 1990
- Allegheny Ludlum Corporation
- Robert H. Johns
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for determining an edge profile of a metallic workpiece
- Patent number 4,858,327
- Issue date Aug 22, 1989
- Allegheny Ludlum Corporation
- Robert H. Johns
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Thermocouple selection switch
- Patent number 4,821,285
- Issue date Apr 11, 1989
- Allegheny Ludlum Corporation
- Robert H. Johns
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for servering thin strip
- Patent number 4,768,409
- Issue date Sep 6, 1988
- Allegheny Ludlum Corporation
- Robert H. Johns
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Method and apparatus for direct casting of crystalline strip by rad...
- Patent number 4,715,428
- Issue date Dec 29, 1987
- Allegheny Ludlum Corporation
- Robert H. Johns
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method and apparatus for continuous casting of crystalline strip
- Patent number 4,678,719
- Issue date Jul 7, 1987
- Allegheny Ludlum Corporation
- Robert H. Johns
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for strip casting
- Patent number 4,399,860
- Issue date Aug 23, 1983
- Allegheny Ludlum Steel Corporation
- Robert H. Johns
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Nozzle in a strip casting apparatus
- Patent number 4,330,025
- Issue date May 18, 1982
- Allegheny Ludlum Steel Corporation
- Robert H. Johns
- B22 - CASTING POWDER METALLURGY

Robert H. Johns

Person

Patents Grantslast 30 patents

Apparatus for determining surface profiles of metallic workpieces

Apparatus for determining an edge profile of a metallic workpiece

Thermocouple selection switch

Method and apparatus for servering thin strip

Method and apparatus for direct casting of crystalline strip by rad...

Method and apparatus for continuous casting of crystalline strip

Apparatus for strip casting

Nozzle in a strip casting apparatus