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:
Nov. 28, 2017
Filed:
Nov. 10, 2005
José Carlos Costa Da Silva Pinto, Rio de Janeiro, BR;
Mariana Araújo Niemeyer Limeira, Rio de Janeiro, BR;
Fabricio Machado Silva, Rio de Janeiro, BR;
Priamo Albuquerque Melo, Rio de Janeiro, BR;
Márcio Nele DE Souza, Rio de Janeiro, BR;
Galdêncio Espinosa Lopez, Niterói, BR;
José Carlos Costa da Silva Pinto, Rio de Janeiro, BR;
Mariana Araújo Niemeyer Limeira, Rio de Janeiro, BR;
Fabricio Machado Silva, Rio de Janeiro, BR;
Priamo Albuquerque Melo, Rio de Janeiro, BR;
Márcio Nele De Souza, Rio de Janeiro, BR;
Galdêncio Espinosa Lopez, Niterói, BR;
INSTITUTO ALBERTO LUIZ COIMBRA DE PÓS-GRADUAÇÃO E PESQUISA DE ENGENHARIA—COPPE, Rio de Janeiro, BR;
FIRST LINE INDUSTRIA E COMMERCIA S/A, Rio de Janeiro, BR;
Abstract
The present invention describes a process for the synthesis of spherical particles of polyvinyl alcohol—PVA and/or polyvinyl acetate—PVAc with shell nucleus structure from total or partial hydrolysis in a caustic aqueous medium with obtaining particulates of PVA/PVAc with controlled spherical morphology, to be used in vascular embolization.