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:
Jun. 22, 2004
Filed:
Oct. 18, 2001
Applicant:
Inventors:
Kishor Kumar Mistry, Bradford, GB;
Janine Andrea Preston, Leeds, GB;
Kenneth Charles Symes, Keighley, GB;
Assignee:
Ciba Specialty Chemicals Water Treatments Ltd., Bradford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/66 ;
U.S. Cl.
CPC ...
B32B 5/66 ;
Abstract
A particulate composition comprising particles having a core comprising a hydrophobic polymer within a shell, characterised in that the shell comprises a semi-permeable membrane. Particulate composition can be used for making a stable dispersion of particles uniformly distributed throughout a first hydrophobic liquid, wherein the particles comprise a core within a shell and the core comprises a hydrophobic polymer into has been imbibed a second hydrophobic liquid, Compositions can be used to encapsulate active substances and may be used in sustained release mechanisms.