Okada; Kiyoshi

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Patents Grantslast 30 patents

Information Patent Grant
Device for disentangling and spreading short steel fibers
- Patent number 4,167,248
- Issue date Sep 11, 1979
- Akazawa; Haluichi
- Haluichi Akazawa
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Method for mixing steel fiber in concrete or mortar
- Patent number 4,121,943
- Issue date Oct 24, 1978
- Akazawa; Haluichi
- Haluichi Akazawa
- B28 - WORKING CEMENT, CLAY, OR STONE