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

Patent Owner(s)

Patent Owner	Address
SANTONI S P A	25135 BRESCIA

International Classification(s)

• 1506:TEXTILE, SEWING, KNITTING AND EMBROIDERING MACHINE....

• 2019 Application Filing Year
• 1506 Class
• 27 Applications Filed
• 27 Patents Issued To-Date
• 100 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Lonati, Andrea	Brescia, IT	38	88
# of filed Patents : 38 Total Citations : 88
Lonati, Ettore	Botticino, IT	140	694
# of filed Patents : 140 Total Citations : 694
Lonati, Fausto	Brescia, IT	139	687
# of filed Patents : 139 Total Citations : 687

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Patent Citation Ranking

• 0 Citation Count
• 1506 Class

• 0 % this patent is cited more than
• 3 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Apr 18, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Apr 18, 2030
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Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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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: 5234465

Pad-dyeing of cellulose fibers with sulfur black dyes: mixture of dithionite and glucose reducing sugar as reducing agent in aqueous alkaline dye bath

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Abstract

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Cellulose fibers are dyed ecologically soundly with sulfur black dyes by the pad-dyeing process by avoiding sulfides as reducing agent by replacing them by a dithionite-based mixture with at least one reducing sugar. A high color yield, a deep black shade and good reproducibility are ensured. The preferred reducing sugar is glucose.

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Description

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Claims

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Legal Events

 

• FPAY2005
• FPAY2001
• FPAY1997
• I1993
• STCF1993
• FEPP1992
• F1992
• AS1992
• PD1991

Date	Code	Event	Description
Jan 11, 2005	FPAY	FEE PAYMENT	year of fee payment: 12
Jan 18, 2001	FPAY	FEE PAYMENT	year of fee payment: 8
Jan 21, 1997	FPAY	FEE PAYMENT	year of fee payment: 4
Aug 10, 1993	I	Issuance
Jul 28, 1993	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Dec 08, 1992	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Jan 29, 1992	F	Filing
Jan 23, 1992	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HAHNKE, MANFRED;SAALFRANK, ULLRICH;SCHUSTER, CLAUS;AND OTHERS;REEL/FRAME:005999/0993 Owner name: HOECHST AKTIENGESELLSCHAFT Effective Date: Jan 23, 1992
Jan 31, 1991	PD	Priority Date