Ayumi Yokozawa

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Erasing method in nonvolatile semiconductor memory device
- Patent number 5,933,367
- Issue date Aug 3, 1999
- NEC Corporation
- Makoto Matsuo
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of determining operating conditions for a nonvolatile semico...
- Patent number 5,886,905
- Issue date Mar 23, 1999
- NEC Corporation
- Ayumi Yokozawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for forming silicon nitride film having low leakage current...
- Patent number 5,663,087
- Issue date Sep 2, 1997
- NEC Corporation
- Ayumi Yokozawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process simulation method, process simulator and chemical vapor dep...
- Patent number 5,590,051
- Issue date Dec 31, 1996
- NEC Corporation
- Ayumi Yokozawa
- G06 - COMPUTING CALCULATING COUNTING