Patent · US Expired

Hardened glass or glass-ceramic cooking vessel formed as a wok, and method of making same

US6360653B1 · kind B1 · utility

5Cited by

12References

5Claims

0Family size

Assignee

Schott Glas · DE

Inventors

Erich Rodek · Mainz, DE
Helga Goetz · Heidesheim, DE
Stefan Hubert · Bubenheim, DE
Evelin Weiss · Mainz, DE
Patrik Schober · Nieder-Olm, DE
Horst Schillert · Eschershausen, DE

Key dates

Filing date	Feb 15, 2000
Grant date	Mar 26, 2002
Priority date	—
Expiry date	Feb 15, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B32/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The wok is made from hardened glass or glass-ceramic material so that it has a cooking surface that is easier to clean than prior art metal woks. Furthermore when it is heated a better temperature distribution for cooking is produced and it can be universally heated, either by a radiantly heated body or an atmospheric gas burner. The method of making the wok starts with a glass blank or piece of borosilicate glass, which is heated until it softens and then is shaped or formed into the shape of the wok, optionally ceramicized and cooled.

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