John O. Ratka

Follow

Person

Cleveland Heights, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Machinable lean beryllium-nickel alloys containing copper for golf...
- Patent number 5,911,948
- Issue date Jun 15, 1999
- Brush Wellman Inc.
- John O. Ratka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method and apparatus for welding precipitation hardenable materials
- Patent number 5,324,914
- Issue date Jun 28, 1994
- Trustees of Princeton University
- Holt Murray
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for thermodynamically treating a region joining two members...
- Patent number 5,257,733
- Issue date Nov 2, 1993
- Brush Wellman Inc.
- William D. Spiegelberg
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for thermodynamically treating a region joining two members
- Patent number 5,217,158
- Issue date Jun 8, 1993
- Brush Wellman, Inc.
- William D. Spiegelberg
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR