Akiya Yamashita

Follow

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for distillation-crystallization of zinc carbonate
- Patent number 4,710,215
- Issue date Dec 1, 1987
- Tsukishima Kikai Co., Ltd.
- Tatsushi Kasai
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System for dissolution-purification of Zn-containing materials
- Patent number 4,689,146
- Issue date Aug 25, 1987
- Tsukishima Kikai Co., Ltd.
- Tatsushi Kasai
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...