Franz Weissenfels

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Siegburg, DT

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Patents Grantslast 30 patents

Information Patent Grant
Process for improving the mechanical properties of novolak-cured mo...
- Patent number 4,070,327
- Issue date Jan 24, 1978
- Dynamit Nobel Aktiengesellschaft
- Hans Junger
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for the continuous manufacture of phenolic resin foam in...
- Patent number 4,042,314
- Issue date Aug 16, 1977
- Dynamit Nobel Aktiengesellschaft
- Klaus Bruning
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Hardenable compositions of improved thermal stability
- Patent number 4,036,798
- Issue date Jul 19, 1977
- Dynamit Nobel Aktiengesellschaft
- Walter Hoppe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Apparatus for the continuous manufacture of phenolic resin foam in...
- Patent number 3,999,230
- Issue date Dec 28, 1976
- Dynamit Nobel Aktiengesellschaft
- Klaus Bruning
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL