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:
Apr. 14, 2015
Filed:
Aug. 10, 2009
Peter J. Valianatos, Charlestown, MA (US);
Rajesh Chebiyam, Nashua, NH (US);
Jeremy J. Manning, Kingston, MA (US);
Michael L. Steiner, New Richmond, WI (US);
Thomas H. Whitesides, Victoria, CA;
Michael D. Walls, Dorchester, MA (US);
Peter J. Valianatos, Charlestown, MA (US);
Rajesh Chebiyam, Nashua, NH (US);
Jeremy J. Manning, Kingston, MA (US);
Michael L. Steiner, New Richmond, WI (US);
Thomas H. Whitesides, Victoria, CA;
Michael D. Walls, Dorchester, MA (US);
E Ink Corporation, Billerica, MA (US);
Abstract
Prior art processes for producing protein-based capsules (for example, capsules for use in electrophoretic media) tend to be wasteful because they produce many capsules outside the desired size range, which is typically about 20 to 50 μm. Capsule size distribution and yields can be improved by either (a) emulsifying a water-immiscible phase in a preformed coacervate of the protein; or (b) using a limited coalescence process with colloidal alumina as the surface-active particulate material.