Hans Leutwiler

Person

Schaffhausen, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Method for desanding castings
- Patent number 6,283,831
- Issue date Sep 4, 2001
- Georg Fischer DISA AG
- Kurt Fischer
- B24 - GRINDING POLISHING
Information Patent Grant
Process for compressing granular material in a molding box
- Patent number 5,601,777
- Issue date Feb 11, 1997
- Georg Fischer Giessereianlagen AG
- Kurt Fischer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Device for compacting granular molding material
- Patent number 5,476,136
- Issue date Dec 19, 1995
- Georg Fischer Giessereianlagen AG
- Hans Leutwiler
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for the compression of molding sand for casting molds
- Patent number 5,348,070
- Issue date Sep 20, 1994
- Georg Fischer A.G.
- Kurt Fischer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Molding apparatus including vents comprising elongated slotted bars
- Patent number 5,280,821
- Issue date Jan 25, 1994
- Georg Fischer A.G.
- Kurt Fischer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for compressing granular molding materials
- Patent number 5,161,596
- Issue date Nov 10, 1992
- Georg Fischer A.G.
- Kurt Fischer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for compacting powdery materials
- Patent number 4,921,035
- Issue date May 1, 1990
- Georg Fischer A.G.
- Hans Leutwiler
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for selectively compressing granular material in a molding box
- Patent number 4,828,007
- Issue date May 9, 1989
- Georg Fischer A.G.
- Kurt Fischer
- B22 - CASTING POWDER METALLURGY

Hans Leutwiler

Person

Patents Grantslast 30 patents

Method for desanding castings

Process for compressing granular material in a molding box

Device for compacting granular molding material

Process for the compression of molding sand for casting molds

Molding apparatus including vents comprising elongated slotted bars

Method for compressing granular molding materials

Process for compacting powdery materials

Process for selectively compressing granular material in a molding box