JOYCE CHEN, U.S. Patent Holder, Flat Bottom Wok, Filed March 9, 1970 Patented August 10, 1971, Patent # 221,397
- Introducing polyethylene-cutting boards made by Sumitomo Bakelite to the U.S., which she discovered while eating sushi at a restaurant in Japan
- Patenting and marketing the flat bottom wok with a handle to the U.S. market in 1970, which she called the Peking Wok.
- Selling the Joyce Chen wok along with higher quality Chinese cooking utensils to U.S. home cooks, who at the time had little exposure to these items, and no opportunity to obtain them