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

Patent Owner(s)

Patent Owner	Address
INTERNATIONAL STANDARD ELECTRIC CORPORATION	320 PARK AVENUE NEW YORK NEW YORK 10022

International Classification(s)

• G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....

• 1984 Application Filing Year
• G01S Class
• 231 Applications Filed
• 18 Patents Issued To-Date
• 7.80 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Heeks, John S	Old Harlow, GB2	7	87
# of filed Patents : 7 Total Citations : 87

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Patent Citation Ranking

• 13 Citation Count
• G01S Class

• 0 % this patent is cited more than
• 39 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: 4620193

Optical phase array radar

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Abstract

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In an optically controlled phased array radar control information in the form of microwave frequency modulation of an optical carrier is transmitted by optical waveguide from a central processor to each of the antenna elements. Phase shifts introduced by each of the individual waveguides are then monitored to provide a compensation signal used either to regulate the phase shift or to offset the phase of the modulation applied to the waveguide at the central processor end.

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Description

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Claims

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Legal Events

 

• FPAY1998
• FPAY1994
• FEPP1992
• FPAY1989
• FEPP1986
• I1986
• STCF1986
• F1984
• AS1984
• PD1983

Date	Code	Event	Description
Apr 27, 1998	FPAY	FEE PAYMENT	year of fee payment: 12
Apr 04, 1994	FPAY	FEE PAYMENT	year of fee payment: 8
Nov 02, 1992	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
Nov 06, 1989	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 08, 1986	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Oct 28, 1986	I	Issuance
Aug 28, 1986	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Jun 11, 1984	F	Filing
Jan 06, 1984	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HEEKS, JOHN S.;REEL/FRAME:004280/0702 Owner name: INTERNATIONAL STANDARD ELECTRIC CORPORATION, 320 P Effective Date: Jan 06, 1984
Jun 16, 1983	PD	Priority Date