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Official data from INPI

PROCESSO PARA PREPARAR UMA CHAPA DE IMPRESSÃO EM RELEVO

PublicadaInvention Patent

Application data

Number

PI8802956

Type

Invention Patent

Filing

06/16/1988

Publication

01/10/1989

Progress at the INPI

  1. Filing06/16/88
  2. Publication01/10/89
  3. Examination03/05/91
  4. Allowance12/07/93
  5. Grant06/28/94
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PT Sub, Inc.

US

W.R. Grace Limited

GB

See this company's full portfolio

Inventors

G. C. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8714177 · 06/17/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/10/1989

RPI 951

Pedido de patente depositado

#2.1

11/08/1988

RPI 942

Carta-patente expirada

#21.1

Patente extinta em 16/06/2003

09/02/2008

RPI 1965

Pedido de licença compulsória

#20.1

12/03/1996

RPI 1357

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

04/26/1994

RPI 1221

Deferimento

#9.1

12/07/1993

RPI 1201

Solicitação de exame técnico

#4.1

03/05/1991

RPI 1057

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