公开(公告)号：US09438997B2

公开(公告)日：2016-09-06

申请号：US14650324

申请日：2013-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohei Jin ,  Yoshimichi Kajihara

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

CPC classification number: H04R7/02 ,  H04R1/00 ,  H04R7/06 ,  H04R9/06 ,  H04R31/003 ,  H04R2307/021 ,  H04R2307/023 ,  H04R2307/025 ,  H04R2307/027 ,  H04R2307/029 ,  H04R2499/11 ,  H04R2499/13 ,  H04R2499/15

Abstract: A diaphragm includes a paper layer and a skin layer. The paper layer includes natural fibers and synthetic fibers formed of thermoplastic resin. The paper layer is formed by mixing the natural fibers and the synthetic fibers in water, and thinly spreading a resultant mixture on a mesh. The skin layer is formed on one surface of the paper layer. Note here that the skin layer is formed of the same resin as that of the synthetic fibers.

Abstract translation: 隔膜包括纸层和表皮层。 纸层包括由热塑性树脂形成的天然纤维和合成纤维。 通过将天然纤维和合成纤维混合在水中形成纸层，并将所得混合物在网上稀释。 表皮层形成在纸层的一个表面上。 这里注意，表层由与合成纤维相同的树脂形成。

公开(公告)号：US09877109B2

公开(公告)日：2018-01-23

申请号：US14893056

申请日：2014-07-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshimichi Kajihara ,  Yohei Jin

IPC: H04R7/06 ,  H04R7/18 ,  H04R31/00 ,  H04R9/02

CPC classification number: H04R7/06 ,  H04R7/18 ,  H04R9/025 ,  H04R31/003 ,  H04R2307/023 ,  H04R2307/029

Abstract: A diaphragm for loudspeaker contains resin and single-crystal diamond powder dispersed in the resin.

公开(公告)号：US09716950B2

公开(公告)日：2017-07-25

申请号：US15022206

申请日：2014-10-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshimichi Kajihara ,  Yohei Jin

IPC: H04R1/00 ,  H04R7/06 ,  H04R7/12 ,  B32B29/02 ,  H04R9/06 ,  H04R31/00

CPC classification number: H04R7/06 ,  B32B29/02 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2262/103 ,  B32B2262/106 ,  B32B2307/51 ,  B32B2307/54 ,  B32B2307/7265 ,  B32B2457/00 ,  H04R7/125 ,  H04R9/06 ,  H04R31/003 ,  H04R2307/025 ,  H04R2307/027 ,  H04R2307/029 ,  H04R2499/11 ,  H04R2499/13

Abstract: The diaphragm has a paper base layer and a papermaking layer. The papermaking layer is formed on a surface of the paper base layer. The paper base layer contains natural fibers and thermoplastic resin, and is formed by a papermaking process with a mixture of the natural fibers and the resin. The papermaking layer, contains fibers each having a tensile elastic modulus of 150 GPa or greater, and is formed by a papermaking process with the fibers.

公开(公告)号：US10531170B2

公开(公告)日：2020-01-07

申请号：US16310500

申请日：2017-08-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshimichi Kajihara ,  Takuji Miyamoto ,  Yuuki Izumi ,  Satoshi Koura

IPC: H04R1/02 ,  H04R9/06 ,  H04R9/02 ,  H04R7/16

Abstract: A loudspeaker device includes a loudspeaker, a box, and a lid. The box is provided with an opening and accommodates the loudspeaker. The lid covers the opening of the box. The lid includes a grille with one or more hexagonal holes each having an opening area equal to the area of a circle with a diameter in a range from 6.0 mm to 9.0 mm, inclusive.

公开(公告)号：US09781515B2

公开(公告)日：2017-10-03

申请号：US15023684

申请日：2015-08-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomonori Shibuya ,  Yoshiyuki Takahashi ,  Yoshimichi Kajihara ,  Tetsushi Itano ,  Mitsukazu Kuze ,  Takayuki Dan

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

CPC classification number: H04R7/06 ,  H04R7/125 ,  H04R9/045 ,  H04R9/06 ,  H04R2307/021 ,  H04R2307/029 ,  H04R2499/11 ,  Y10S977/796

Abstract: A loudspeaker diaphragm includes a base layer and a coating layer. The base layer contains natural fibers. The coating layer is composed of bamboo cellulose nanofibers and is formed at least on the first side of the base layer. The coating layer has a thickness in the range of 3% to 15%, both inclusive of the sum of the thicknesses of the base layer and the coating layer.