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

Patent Owner(s)

Patent Owner	Address
HISAKA WORKS LIMITED	OSAKA-SHI OSAKA 541

International Classification(s)

• F22B:METHODS OF STEAM GENERATION; STEAM BOILERS

• 1988 Application Filing Year
• F22B Class
• 95 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Horiguchi, Akira	Osaka, JP	27	233
# of filed Patents : 27 Total Citations : 233
Sumitomo, Hiroyuki	Osaka, JP	25	196
# of filed Patents : 25 Total Citations : 196

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Patent Citation Ranking

• 3 Citation Count
• F22B 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: 4827877

Heat recovery system utilizing non-azeotropic medium

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Abstract

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A heat recovery system including a closed working fluid loop constituted by connecting an evaporating apparatus supplied with warm waste water, a steam turbine having an output shaft to be coupled to the load, and a condensing apparatus supplied with cooling water, works on the basis of a Rankine cycle and utilize non-azeotropic mixture as the working fluid.

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Description

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Claims

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Legal Events

 

• STCH2018
• FP2001
• LAPS2001
• REMI2000
• FPAY1996
• FEPP1995
• FEPP1992
• FPAY1992
• FEPP1991
• I1989
• F1988
• PD1987

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
May 09, 2001	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: May 09, 2001
May 06, 2001	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 28, 2000	REMI	MAINTENANCE FEE REMINDER MAILED
Oct 28, 1996	FPAY	FEE PAYMENT	year of fee payment: 8
Dec 09, 1995	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
Dec 07, 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
Jun 17, 1992	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 08, 1991	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
May 09, 1989	I	Issuance
Mar 16, 1988	F	Filing
Jan 13, 1987	PD	Priority Date