Patent · US Expired

Process for producing cubic system boron nitride

US4287164A · kind A · utility

6Cited by

1References

7Claims

0Family size

Assignee

National Institute for Research in Inorganic Materials · JP

Inventors

Tadashi Endo · Komaki, JP
Osamu Fukunaga · Ichikawa, JP
Minoru Iwata · Chiba, JP

Key dates

Filing date	Oct 12, 1979
Grant date	Sep 1, 1981
Priority date	—
Expiry date	Oct 12, 1999

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2203/068
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for producing cubic system boron nitride comprises contacting calcium or strontium boron nitride with hexagonal system boron nitride and heating at higher than 1,450.degree. C. under the thermodynamically stable pressure for cubic system boron nitride.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.