IP Library › Granted Patent US 7,008,617
Granted Patent B1
US 7,008,617 · App. 10/295,677 · Granted Mar 7, 2006

Precipitated silicas

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Quick Facts
Patent No.
US 7,008,617
App. No.
10/295,677
Granted
Mar 7, 2006
Kind
B1
Abstract

An abrasive, amorphous precipitated silica is provided that provides excellent abrasive performance, but also has a relatively high degree of transmittance, and an index of refraction that is sufficiently low to allow it to be a component of a transparent toothpaste composition having a relatively high concentration of water. The amorphous precipitated silica composition has a refractive index of less than about 1.4387, a light transmittance of greater than about 48%; and a Brass Einlehner abrasion value of greater than about 5 mg loss/100,000 rev. A dentifrice having a haze value of less than about 70 may be prepared using this abrasive, amorphous silica.

Claims (5)

1. An abrasive, precipitated silica having:

a refractive index of less than about 1.4387;

a light transmittance of greater than about 48%; and

a Brass Einlehner abrasion value of greater than 5.5 mg loss/100,000 rev.

2. The silica according to claim 1 , wherein the light transmittance is greater than about 60%.

Assignments (4)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jun 27, 2014
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: J.M. HUBER CORPORATION; CP KELCO U.S., INC.; HUBER ENGINEERED WOODS LLC
Reel/Frame 033247/0705 →
SECURITY INTEREST Recorded Nov 8, 2011
From: J.M. HUBER CORPORATION; CP KELCO U.S., INC.; HUBER ENGINEERED WOODS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 027279/0114 →
RELEASE OF SECURITY INTEREST Recorded Nov 1, 2011
From: BANK OF AMERICA, N.A.
To: J.M. HUBER CORPORATION; 333 ASSOCIATES LLC; 333 PARTNERS LLC; CELTEGAN LLC; CP KELCO U.S., INC.; HUBER CST COMPANY; HUBER CST CORPORATION; HUBER ENERGY L.P.; HUBER ENERGY LLC; HUBER ENGINEERED WOODS LLC; HUBER EQUITY CORPORATION; HUBER INTERNATIONAL CORP.; HUBER RESOURCES CORP.; HUBER SOUTH TEXAS GP, LLC; HUBER SOUTH TEXAS LP, LLC; HUBER TIMBER INVESTMENTS LLC; HUBER TIMBER LLC; J.M. HUBER MICROPOWDERS INC.; JMH PARTNERS CORP.; KELCO COMPANY; ST. PAMPHILE TIMBER LLC; TABSUM, INC.; TARA INSURANCE GLOBAL LIMITED; QUINCY WAREHOUSES, INC. (FORMERLY UNDERGROUND WAREHOUSES, INC.
Reel/Frame 027158/0142 →
SECURITY AGREEMENT Recorded Mar 29, 2011
From: J.M. HUBER CORPORATION; 333 ASSOCIATES LLC; 333 PARTNERS LLC; CELTEGAN LLC; CP KELCO U.S., INC.; HUBER CST COMPANY; HUBER CST CORPORATION; HUBER ENERGY L.P.; HUBER ENERGY LLC; HUBER ENGINEERED WOODS LLC; HUBER EQUITY CORPORATION; HUBER INTERNATIONAL CORP.; HUBER RESOURCES CORP.; HUBER SOUTH TEXAS GP, LLC; HUBER SOUTH TEXAS LP, LLC; HUBER TIMBER INVESTMENTS LLC; HUBER TIMBER LLC; J.M. HUBER MICROPOWDERS INC.; JMH PARTNERS CORP.; KELCO COMPANY; ST. PAMPHILE TIMBER LLC; TABSUM, INC.; TARA INSURANCE GLOBAL LIMITED; UNDERGROUND WAREHOUSES, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 026042/0063 →