Title:
コルク粒子から成形した主要部材で光学眼鏡用主要部品を被覆する方法
Document Type and Number:
Japanese Patent JP7165276
Kind Code:
B2
Abstract:
A method for purifying powdered silicon carbide is in the form of a starting material to form a silicon carbide having a purity of at least 99.9%. This method has the following method steps: providing a starting material having a grain size of less than 100 μm and a silicon carbide content with at least 98% purity; and heating the starting material in a vacuum or oxygen-free atmosphere to a temperature above 1700° C. over a period of at least 8 minutes.
Inventors:
Lefebvre Marc Rene Andre Louis
Jaki Herve Francois Serge
Jaki Herve Francois Serge
Application Number:
JP2021577880A
Publication Date:
November 02, 2022
Filing Date:
July 02, 2020
Export Citation:
Assignee:
Killine Optical Limited
International Classes:
G02C1/06; C08L21/00; C08L97/00; G02C5/02; G02C5/14
Domestic Patent References:
| JP6215777Y2 | ||||
| JP214024Y2 | ||||
| JP2017518202A | ||||
| JP2018535300A |
Foreign References:
| US20090021688 | ||||
| US20140160421 |
Attorney, Agent or Firm:
Patent Attorney Corporation Maeda Patent Office