The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2011
Filed:
Mar. 22, 2010
John Claude Husband, St. Austell, GB;
Nigel V. Jarvis, St. Austell, GB;
Charles Desmond Payton, St. Austell, GB;
David Robert Skuse, Truro, GB;
John Claude Husband, St. Austell, GB;
Nigel V. Jarvis, St. Austell, GB;
Charles Desmond Payton, St. Austell, GB;
David Robert Skuse, Truro, GB;
Imerys Minerals Limited, Par Cornwall, GB;
Abstract
A method of preparing a steep particle size inorganic particulate material includes grinding an aqueous suspension of an inorganic particulate material having a solids content of less than 35% and including a sub-effective amount of a dispersant for the inorganic particulate material. The method may further include dewatering the aqueous suspension to a solids content of at least 50% and dispersing the dewatered aqueous suspension by adding an additional amount of dispersant, and wherein, after grinding, the inorganic particulate material has a steepness factor above 35.