# US 5,705,880 A · Piezoelectric device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,705,880 A
- Document ID: US5705880A
- Status: Granted
- Kind: A
- Application number: 08/457,760
- Filed: 1995-06-01
- Granted: 1998-01-06
- Earliest claimed: 1994-06-27
- Assignees: Murata Manufacturing Co., Ltd.
- Inventors: Takashi Shimura; Kenichi Nishimoto; Masanari Nishikigawa; Takashi Hosoe; Masaaki Tutiya; Hirohide Yoshino; Manabu Sumita; Takeshi Yamazaki; Sigeo Ojima; Sadayuki Kato
- Web page: https://patentgrep.com/patent/US5705880A

## CPC

- H03H 9/605: {consisting of a ladder configuration}
- H03H 9/1028: {the BAW device being held between spring terminals}
- H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P)

## Abstract

An electronic device which has piezoelectric resonators and terminals piled in a box-like case. The electronic device has a couple of terminals, each of which has a contact portion and a junction portion extending from the contact portion. In the case, the couple of terminals are integrated by electrically connecting the junction portions.

## Claims

### Claim 1

A piezoelectric device comprising:
a case which has an opening;
piezoelectric resonators which are inserted in the case through the opening;
an input terminal and an output terminal which are inserted in the case through the opening and hold the piezoelectric resonators; and
a pair of junction terminals which are inserted in the case through the opening and hold the piezoelectric resonators, each of the junction terminals having a contact portion and a junction portion extending from the contact portion, the junction terminals being integrated by electrically connecting the respective junction portions,
wherein the junction portion of the junction terminals extend upward substantially perpendicularly to the contact portions of the junction terminals.

### Claim 2 (depends on 1)

A piezoelectric device as claimed in claim 1, wherein the electronic device is a ladder filter.

### Claim 3 (depends on 1)

A piezoelectric device as claimed in claim 1, wherein at least one of the junction terminals has a second contact portion which is folded on the contact portion.