NC

Nga V. Chau

AT AT&T: 5 patents #3,608 of 18,772Top 20%
Overall (All Time): #1,052,424 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5751792 System and method for providing a message system subscriber with a roaming mailbox Edward D. Eng, Henry Shen, Agnes C. Tow, Gang Yang 1998-05-12
5333180 Call message delivery system and method utilizing caller-selected system announcements Percy B. Brown, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more 1994-07-26
5187710 Method and apparatus for the billing of value-added communications calls Reuben D. Hauptman, David D. Kaufman, Barbara Joanne Kittredge, Pamela J. Lauber, Patricia Lindblad 1993-02-16
4972461 Call message delivery system and method Percy B. Brown, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more 1990-11-20
4939771 Attendant-controlled call message delivery system and method Percy B. Brown, A. R. Gore, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier +4 more 1990-07-03