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

Patent Owner(s)

Patent Owner	Address
DIGITAL SCINTIGRAPHICS INC A MASSACHUSETTS CORP	1972 MASSACHUSETTS AVENUE CAMBRIDGE MA 02140

International Classification(s)

• G01T:MEASUREMENT OF NUCLEAR OR X-RADIATION

• 1988 Application Filing Year
• G01T Class
• 121 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Genna, Sebastian	Belmont, MA	13	192
# of filed Patents : 13 Total Citations : 192
Smith, Andrew P	Medford, MA	113	5871
# of filed Patents : 113 Total Citations : 5871

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Patent Citation Ranking

• 10 Citation Count
• G01T Class

• 0 % this patent is cited more than
• 36 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: 4837439

Scintillation camera with segmented light pipe

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Abstract

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A scintillation camera having scintillation material which emits light in response to absorbed radiation, an array of photodetectors for detecting the emitted light, and a segmented light pipe which conducts the emitted light to the photodetectors. The light pipe includes a plurality of segments which intersect with adjacent segments at an angle and define planar faces which are optically coupled to the photodetectors.

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Description

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Claims

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Legal Events

 

• STCH2018
• FP2001
• LAPS2001
• REMI2000
• FPAY1996
• FPAY1993
• SULP1993
• REMI1993
• I1989
• F1988
• AS1988

Date	Code	Event	Description
Jan 30, 2018	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jun 06, 2001	FP	EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jun 06, 2001
Jun 03, 2001	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Dec 26, 2000	REMI	MAINTENANCE FEE REMINDER MAILED
Dec 06, 1996	FPAY	FEE PAYMENT	year of fee payment: 8
Feb 10, 1993	FPAY	FEE PAYMENT	year of fee payment: 4
Feb 10, 1993	SULP	SURCHARGE FOR LATE PAYMENT
Jan 06, 1993	REMI	MAINTENANCE FEE REMINDER MAILED
Jun 06, 1989	I	Issuance
Feb 24, 1988	F	Filing
Feb 24, 1988	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:GENNA, SEBASTIAN;SMITH, ANDREW P.;REEL/FRAME:004838/0444 Owner name: DIGITAL SCINTIGRAPHICS, INC., 1972 MASSACHUSETTS A Effective Date: Feb 24, 1988 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GENNA, SEBASTIAN;SMITH, ANDREW P.;REEL/FRAME:004838/0444 Owner name: DIGITAL SCINTIGRAPHICS, INC., A MASSACHUSETTS COR Effective Date: Feb 24, 1988