Family

+

−

Country	kind	publication No.	Filing Date	Type	Sub-Type
JP	A	JPH10150387	Nov 18, 1996	Patent	Application
Type : Patent Sub-Type : Application
Published unexamined patent application		HOT STANDBY CHANGEOVER DEVICE		Jun 02, 1998
DE	A1	DE19750933	Nov 17, 1997	Patent	Application
Type : Patent Sub-Type : Application
DOC. LAID OPEN (FIRST PUBLICATION)		Bereitschaftsbetrieb-Umschalteinheit mit geringer Signaldämpfung		Jun 04, 1998

• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
NEC CORPORATION	7-1 SHIBA 5-CHOME MINATO-KU TOKYO 108-8001

International Classification(s)

• H02B:BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR....
• H01H:ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PR....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Yamazaki, Masao	Tokyo, JP	27	212
# of filed Patents : 27 Total Citations : 212

Cited Art Landscape

Load Citation

• No Cited Art to Display

Loading Cited Art Landscape...

Patent Citation Ranking

• 1 Citation Count
• H02B Class

• 0 % this patent is cited more than
• 26 Age

Forward Cite Landscape

Load Citation

• No Forward Cites to Display

Loading Forward Cite Landscape...

Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 5886427

Low signal loss type hot stand-by switching unit

---

Abstract

---

A hot stand-by switching unit for a receiving apparatus including regular and a protection receiver comprises a branch circuit and a control circuit. The branch circuit consists of a coupler and a high-frequency switching unit. The high-frequency switching unit is controlled by the control circuit and supplies a low loss output of the coupler to the regular receiver and a high loss output of the coupler to the protection receiver. When the regular receiver breaks down, the high-frequency switching unit supplies the low loss output of the coupler to the protection receiver and the high loss output of the coupler to the regular receiver.

---

 

---

Description

---

Claims

---

Claims data not available

---

Legal Events

 

• STCH2007
• FP2007
• LAPS2007
• REMI2006
• FPAY2002
• FEPP1999
• I1999
• F1997
• AS1997
• PD1996

Date	Code	Event	Description
Apr 25, 2007	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Mar 28, 2007	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Mar 28, 2007
Mar 23, 2007	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Oct 12, 2006	REMI	MAINTENANCE FEE REMINDER MAILED
Aug 29, 2002	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 09, 1999	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Mar 23, 1999	I	Issuance
Nov 13, 1997	F	Filing
Nov 04, 1997	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YAMAZAKI, MASAO;REEL/FRAME:008883/0027 Owner name: NEC CORPORATION, JAPAN Effective Date: Nov 04, 1997
Nov 18, 1996	PD	Priority Date