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

Patent Owner(s)

Patent Owner	Address
SIKA TECHNOLOGY AG	BAAR

International Classification(s)

• C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....

• 2010 Application Filing Year
• C04B Class
• 790 Applications Filed
• 575 Patents Issued To-Date
• 72.79 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dal, Bo Alessandro	Treviso, IT	5	92
# of filed Patents : 5 Total Citations : 92
Goodwin, Frederick R	Solon, US	12	166
# of filed Patents : 12 Total Citations : 166
Sprouts, Sandra R	Oakwood Village, US	11	207
# of filed Patents : 11 Total Citations : 207

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Patent Citation Ranking

• 2 Citation Count
• C04B Class

• 7.80 % this patent is cited more than
• 14 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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 08, 2011	US,7883577,B2   US7883577B2	GRANTED PATENT AS SECOND PUBLICATION
August 05, 2010	US,20100197833,A1   US20100197833A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7883577

Rheology stabilizer for cementitious compositions

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Abstract

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An admixture formulation of at least one polycarboxylate dispersant and at least one naphthalene dispersant is provided. When the polycarboxylate dispersant and the naphthalene dispersant of the admixture formulation are combined at various ratios the admixture formulation reduces the tendency for bleed and segregation in cementitious mixtures without increasing water demand, retarding setting, increasing water sensitivity, promoting high viscosity, or reducing flow retention.

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Description

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Claims

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Claims data not available

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Legal Events

 

• AS2023
• MAFP2022
• MAFP2018
• FPAY2014
• I2011
• STCF2011
• P2010
• F2010
• AS2003
• PD2003

Date	Code	Event	Description
Jun 25, 2023	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONSTRUCTION RESEARCH & TECHNOLOGY GMBH;REEL/FRAME:064640/0880 Owner name: SIKA TECHNOLOGY AG, SWITZERLAND Effective Date: Jun 25, 2023
Jul 27, 2022	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12
Jul 30, 2018	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552) year of fee payment: 8
Aug 06, 2014	FPAY	FEE PAYMENT	year of fee payment: 4
Feb 08, 2011	I	Issuance
Jan 19, 2011	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Aug 05, 2010	P	Published
Apr 07, 2010	F	Filing
Nov 07, 2003	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SPROUTS, SANDRA R.;GOODWIN, FREDERICK R.;DAL BO, ALESSANDRO;SIGNING DATES FROM 20030515 TO 20030527;REEL/FRAME:027539/0179 Owner name: MBT HOLDING AG, SWITZERLAND free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:DEGUSSA CONSTRUCTION CHEMICALS (EUROPE) AG, FORMERLY KNOWN AS MBT HOLDING AG;REEL/FRAME:027539/0237 Owner name: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH, GERMANY Effective Date: Nov 07, 2003
Apr 25, 2003	PD	Priority Date