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

Patent Owner(s)

Patent Owner	Address
THE PROCTER & GAMBLE COMPANY	ONE PROCTER & GAMBLE PLAZA CINCINNATI OH 45202

International Classification(s)

• C11D:DETERGENT COMPOSITIONS

• 2015 Application Filing Year
• C11D Class
• 798 Applications Filed
• 558 Patents Issued To-Date
• 69.93 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Aguilera-Mercado, Bernardo M	Kenwood, US	5	27
# of filed Patents : 5 Total Citations : 27
Barrera, Carola	West Chester, US	29	215
# of filed Patents : 29 Total Citations : 215
Ebert, Sophia	Manneheim, DE	67	422
# of filed Patents : 67 Total Citations : 422
Fossum, Renae Dianna	Middletown, US	79	1838
# of filed Patents : 79 Total Citations : 1838
Hulskotter, Frank	Bad Duerkheim, DE	76	711
# of filed Patents : 76 Total Citations : 711
Loughnane, Brian Joseph	Fairfield, US	63	590
# of filed Patents : 63 Total Citations : 590
Ludolph, Bjoern	Ludwigshafen, DE	58	394
# of filed Patents : 58 Total Citations : 394
Maas, Steffen	Bubenheim, DE	43	334
# of filed Patents : 43 Total Citations : 334
Scialla, Stefano	Rome, IT	169	2008
# of filed Patents : 169 Total Citations : 2008
Vetter, Nicholas David	Cleves, US	51	545
# of filed Patents : 51 Total Citations : 545
Waun, Amy Eichstadt	West Chester, US	14	90
# of filed Patents : 14 Total Citations : 90
Wigbers, Christof	Mannheim, DE	12	237
# of filed Patents : 12 Total Citations : 237

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Patent Citation Ranking

• 7 Citation Count
• C11D Class

• 33.42 % this patent is cited more than
• 8 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Jun 26, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 26, 2029

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
December 26, 2017	US,9850452,B2   US9850452B2	GRANTED PATENT AS SECOND PUBLICATION
March 31, 2016	US,20160090551,A1   US20160090551A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7807830

Manufacture of pure hydralazine salts

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Abstract

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The present invention provides an improved process of preparing hydralazine hydrochloride, which involves the preparation of 1-chlorophthalazine salt and further reacting with hydrazine followed by purification of hydralazine hydrochloride, which is free of phosphate, does not contain any individual impurities more than 0.05%, total impurities less than 0.5%, and a hydrazine content of not more than 0.001%, and preferably less than 0.0003%. One benefit of improved purity is enhanced storage stability.

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Description

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Claims

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Claims data not available

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Legal Events

 

• MAFP2024
• MAFP2020
• I2016
• STCF2016
• P2015
• F2015
• AS2015

Date	Code	Event	Description
Jan 05, 2024	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Jan 06, 2020	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4
Jul 05, 2016	I	Issuance
Jun 15, 2016	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Jul 30, 2015	P	Published
Apr 03, 2015	F	Filing
Apr 03, 2015	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MANSON, RICHARD B.;MILLS, NIGEL G.;WISEMAN, TERRY R.;SIGNING DATES FROM 20090831 TO 20100823;REEL/FRAME:035331/0544 Owner name: PREMARK FEG L.L.C., ILLINOIS