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Official data from INPI

POLÍMEROS DE HIDROGEL DE SILICONE E LENTES DE CONTATO GELATINOSAS.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9900845

Type

Invention Patent

Filing

03/02/1999

Publication

12/21/1999

Progress at the INPI

  1. Filing03/02/99
  2. Publication12/21/99
  3. Examination
  4. Allowance03/27/07
  5. Grant11/06/07
  6. Expired02/04/20

The letters patent expired on 02/04/2020: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/04/2020. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Johnson & Johnson

US

See this company's full portfolio

Inventors

D. V. (pessoa física)

US

M. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

09/033,348 · 03/02/1998

Abstract

Patente de Invenção: "POLÍMERO DE HIDROGEL DE SILICONE" . Um polímero de hidrogel de silicone preparado pela curagem de uma mistura de reação compreendendo um monômero contendo silicone funcional em hidroxialquilamina.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

PATENTE EXTINTA EM 02.03.2019

02/04/2020

RPI 2561

Concessão da patente

#16.1

11/06/2007

RPI 1922

Deferimento

#9.1

03/27/2007

RPI 1890

Exigência - art. 36 da LPI

#6.1

11/28/2006

RPI 1873

Publicação do pedido de patente

#3.1

12/21/1999

RPI 1511

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