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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UM SUPERABSORVENTE DE POLI(ACRILATO DE METAL ALCALINO) IONICAMENTE RETICULADO

PublicadaInvention Patent

Application data

Number

PI8802320

Type

Invention Patent

Filing

05/12/1988

Publication

12/13/1988

Progress at the INPI

  1. Filing05/12/88
  2. Publication12/13/88
  3. Examination02/13/91
  4. Allowance06/02/98
  5. Grant10/27/98
  6. Expired12/11/12

The letters patent expired on 12/11/2012: 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: 12/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Johnson & Johnson

US

See this company's full portfolio

Inventors

F. B. (pessoa física)

US

J. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

049.877 · 05/14/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/13/1988

RPI 947

Pedido de patente depositado

#2.1

10/04/1988

RPI 937

Carta-patente expirada

#21.1

Patente extinta em 27/10/2008

12/11/2012

RPI 2188

Concessão da patente

#16.1

10/27/1998

RPI 1451

Deferimento

#9.1

DEFERIDO DE ACORDO COM A LEI 9279 DE 14/05/96

06/02/1998

RPI 1432

Exigência - art. 36 da LPI

#6.1

02/22/1994

RPI 1212

Solicitação de exame técnico

#4.1

02/13/1991

RPI 1054

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