公开(公告)号：US20210306755A1

公开(公告)日：2021-09-30

申请号：US17211114

申请日：2021-03-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tetsuya KOYANAGI ,  Tetsushi ITANO ,  Kazuaki NISHIMURA ,  Makoto KUROZAWA ,  Ryouichi UEMOTO ,  Hiroki SANO

IPC: H04R7/12

Abstract: A speaker diaphragm includes an edge formed from an elastomer, and a diaphragm body that is to be joined to the edge. A joint between the edge and the diaphragm body includes a melting portion between the edge and the diaphragm body.

公开(公告)号：US20230292050A1

公开(公告)日：2023-09-14

申请号：US18116182

申请日：2023-03-01

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Tetsuya KOYANAGI ,  Tetsushi ITANO ,  Kazuaki NISHIMURA

IPC: H04R7/12 ,  H04R9/06 ,  H04R9/04 ,  H04R9/02 ,  H04R31/00 ,  H04R1/02

CPC classification number: H04R7/12 ,  H04R9/06 ,  H04R9/045 ,  H04R9/025 ,  H04R31/003 ,  H04R1/025 ,  H04R2307/023 ,  H04R2400/11 ,  H04R2201/028 ,  H04R2499/13

Abstract: A loudspeaker diaphragm that includes a resin containing silica derived from seed coats and a compatibilizer as an additive.