Granted Patent
Utility
US 6,680,430 · App. 10/149,621
Speaker edge, method of foam-molding the same, apparatus for foam-molding the same, speaker edge foam-molding system, and speaker employing the speaker edge
Inventors:
Shinya Tabata, Shinya Mizone, Yoshiyuki Takahashi, Kiyoshi Ikeda, Hiroko Yamazaki, Shinji Okuda, Masaharu Takada
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Jul 1, 2002
Inventors
Shinya Tabata
Shinya Mizone
Yoshiyuki Takahashi
Kiyoshi Ikeda
Hiroko Yamazaki
Shinji Okuda
Masaharu Takada
Assignees (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
SUNSTAR ENGINEERING INC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.