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Official data from INPI

PROCESSO PARA PURIFICAÇÃO DE UMA BORRACHA

Em ExigênciaInvention Patent
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Application data

Number

PI8405855

Type

Invention Patent

Filing

11/16/1984

Publication

09/17/1985
View on INPI

Progress at the INPI

  1. Filing11/16/84
  2. Publication09/17/85
  3. Examination06/16/87
  4. Allowance02/06/90
  5. Grant09/25/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stamicarbon B.V. (subsidiária licenciada da DSM)

NL

Inventors

L. K. (pessoa física)

NL

Technical data

IPC Classification

C08F 6/00

Priority claims

NL

8303942 · 11/17/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

04/25/1989

RPI 966

Exigência - art. 36 da LPI

#6.1

10/18/1988

RPI 939

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

02/05/1985

RPI 746

Carta-patente expirada

#21.1

Patente extinta em 16/11/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

05/29/1990

RPI 1020

Deferimento

#9.1

02/06/1990

RPI 1005

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