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:
Aug. 22, 2000
Filed:
Apr. 16, 1998
Applicant:
Inventors:
Bryan Skaggs, San Diego, CA (US);
Harold Dial, El Cajon, CA (US);
Walter Rakitsky, San Diego, CA (US);
Assignee:
Pharmacia Corporation, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09D / ; C09D / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
1062056 ; 106724 ; 106725 ; 106726 ; 106730 ; 106804 ; 106805 ; 106802 ; 106809 ; 1061721 ; 1061911 ; 10620501 ; 10628732 ; 10628735 ; 523131 ; 524-4 ; 524-5 ; 507103 ; 507108 ; 507110 ; 507114 ; 507120 ; 507124 ;
Abstract
The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer solution such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and solution thereof. The mixture is wet milled to form an extremely fine particle size, from about 3 microns to about 500 microns distribution of the gum. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications.