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Official data from INPI

APARELHO PARA O TRATAMENTO DE MATERIAL VISCOSO E PROCESSO PARA MODIFICAÇÃO DE MATERIAL VISCOSO

PublicadaInvention Patent
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Application data

Number

PI8700895

Type

Invention Patent

Filing

02/25/1987

Publication

12/22/1987
View on INPI

Progress at the INPI

  1. Filing02/25/87
  2. Publication12/22/87
  3. Examination08/21/90
  4. Allowance08/02/94
  5. Grant03/28/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 12/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Francis Shaw & Co. (Manchester) Ltd

GB

Francis Shaw & Co. (Manchester). Ltd.

Inventors

J. L. (pessoa física)

GB

Technical data

IPC Classification

B29C 47/04

Priority claims

GB

8604673 · 02/25/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

06/16/1987

RPI 869

Carta-patente expirada

#21.1

Patente extinta em 25/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

11/29/1994

RPI 1252

Deferimento

#9.1

08/02/1994

RPI 1235

Exigência - art. 36 da LPI

#6.1

11/16/1993

RPI 1198

Solicitação de exame técnico

#4.1

08/21/1990

RPI 1029

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