Method and apparatus for electrodynamic intrusion detection

United States of America Patent

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Jul 13, 2004
Grant Date
Oct 11, 2001
app pub date
Dec 1, 2000
filing date
Dec 2, 1999

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Abstract

An electromagnetic intrusion detection system which has a transmitter that produces a radio frequency output which is received by an antenna which receives the output and radiates an electromagnetic field into the surrounding space. This in turn responds to the presence of an object or an environmental condition causing absorption and/or reflection. A monitoring apparatus monitors power consumption and thus provides a signal output relating to the environmental condition and/or intrusion.

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Patent Owner	Address
WESTERN DATA COM INC	9757 JUANITA DRIVE N E SUITE 100 KIRKLAND WA 98034

International Classification(s)

G08B:SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; A....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Blum, Dieter W	5115 - 244th Street, Langley, B.C., CA V2Z 1G5	15	237
# of filed Patents : 15 Total Citations : 237

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Method and apparatus for electrodynamic intrusion detection

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09728164

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PATENT NO	6762680
APP PUB NO	20010028307A1
SERIAL NO	09728164
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
July 13, 2004	US,6762680,B2 US6762680B2	GRANTED PATENT AS SECOND PUBLICATION
October 11, 2001	US,20010028307,A1 US20010028307A1	FIRST PUBLISHED PATENT APPLICATION

Date	Code	Event	Description
May 18, 2015	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Apr 17, 2015	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Apr 17, 2015
Apr 17, 2015	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 28, 2014	REMI	MAINTENANCE FEE REMINDER MAILED
Oct 18, 2010	FPAY	FEE PAYMENT	year of fee payment: 4
Nov 01, 2008	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Sep 13, 2008	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEDNA PATENT SERVICES, LLC (F/K/A TVGATEWAY, LLC);REEL/FRAME:021570/0353 Owner name: COMCAST IP HOLDINGS I, LLC, DELAWARE Effective Date: Sep 13, 2008 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEDNA PATENT SERVICES, LLC (F/K/A TVGATEWAY, LLC);REEL/FRAME:021570/0353 Owner name: COMCAST IP HOLDINGS I, LLC,DELAWARE Effective Date: Sep 13, 2008
Aug 21, 2007	CC	CERTIFICATE OF CORRECTION
Apr 17, 2007	I	Issuance
Sep 14, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DISCOVERY COMMUNICATIONS, INC.;REEL/FRAME:015239/0350 Owner name: SEDNA PATENT SERVICES, LLC, PENNSYLVANIA Effective Date: Sep 14, 2004 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DISCOVERY COMMUNICATIONS, INC.;REEL/FRAME:015239/0350 Owner name: SEDNA PATENT SERVICES, LLC,PENNSYLVANIA Effective Date: Sep 14, 2004
Nov 02, 2003	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Feb 03, 1997	F	Filing
Dec 09, 1992	PD	Priority Date

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09728164

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