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. 17, 1997
Filed:
Apr. 14, 1995
Randel E Dorian, Orinda, CA (US);
Kent C Cochrum, Davis, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
An electrostatic process for coating a biological material with a uniform, continuous polymer layer by discharging a suspension of the biological material in a gellable coating polymer solution in a continuous stream through an orifice. The stream is attenuated to form droplets by maintaining an electrostatic voltage between the needle and the gelling solution which is sufficient to maintain an attraction of at least 1.times.10.sup.6 newtons on the stream of liquid leaving the needle, and the droplets are collected in a gelling solution. A preferred product is pancreatic islets having a continuous, smooth coating of high polymannuronate non-fibrogenic alginate having a thickness of at least 10 .mu.m.