Inventor

HAMANO SEIICHI

JP4 patents

⚠️ This page may combine multiple inventors who share the name “HAMANO SEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUMITOMO CHEMICAL CO

2 patents

US5508016AApr 16, 1996

Process for production of transition alumina

SUMITOMO CHEMICAL CO22 citations89

US5155085AOct 13, 1992

Heat resistant transition alumina and process for producing the same

SUMITOMO CHEMICAL CO41 citations89

SUMITOMO ALUMINIUM SMELTING CO

1 patent

US4260524AApr 7, 1981

Hollow catalyst carrier and hollow catalyst made of transition-alumina and process for production thereof

SUMITOMO ALUMINIUM SMELTING CO30 citations90

SUMITOMO ALUMINUM SMELTING COM

1 patent

US4444899AApr 24, 1984

Process for the production of low density activated alumina formed product

SUMITOMO ALUMINUM SMELTING COM40 citations88