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

Patent Owner(s)

Patent Owner	Address
NELLCOR INCORPORATED	4280 HACIENDA DRIVE PLEASANTON CA 94588

International Classification(s)

• A61B:DIAGNOSIS; SURGERY; IDENTIFICATION

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hollub, Seth D	Overland Park, KS	3	503
# of filed Patents : 3 Total Citations : 503

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Patent Citation Ranking

• 220 Citation Count
• A61B Class

• 93.80 % this patent is cited more than
• 31 Age

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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: 5348004

Electronic processor for pulse oximeter

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Abstract

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An electronic processor for calculating in vivo blood oxygenation concentration levels using pulsed light that eliminates both requirements for comparing photosensor signal amplitudes with analog/digital circuit dynamic ranges and also adjusting electronic processor parameters. The invention uses monolithic a/d converters with expanded capacity and a microcontroller/processor with a pulse control module to synchronize switching in an oversampling demodulator with pulsing of light sources to overcome prior circuitry limitations that consumed substantial central processor capacity.

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Description

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Claims

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Legal Events

 

• FPAY2006
• FPAY2002
• FEPP2001
• FPAY1998
• FEPP1997
• I1994
• STPP1994
• F1993
• PD1993
• AS1993

Date	Code	Event	Description
Mar 20, 2006	FPAY	FEE PAYMENT	year of fee payment: 12
Mar 19, 2002	FPAY	FEE PAYMENT	year of fee payment: 8
Dec 04, 2001	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Mar 09, 1998	FPAY	FEE PAYMENT	year of fee payment: 4
Oct 31, 1997	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Sep 20, 1994	I	Issuance
Jan 19, 1994	STPP	INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL	free format text: APPLICATION UNDERGOING PREEXAM PROCESSING
Mar 31, 1993	F	Filing
Mar 31, 1993	PD	Priority Date
Mar 30, 1993	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLLUB, SETH D.;REEL/FRAME:006567/0239 Owner name: NELLCOR INCORPORATED, CALIFORNIA Effective Date: Mar 30, 1993