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Official data from INPI

PROCESSO APERFEIÇOADO PARA A PREPARAÇÃO DE CATALISADORES Á BASE DE CROMITA DE COBRE

Em AnáliseInvention Patent

Application data

Number

PI8503670

Type

Invention Patent

Filing

07/31/1985

Publication

03/10/1987

Progress at the INPI

  1. Filing07/31/85
  2. Publication03/10/87
  3. Examination06/09/87
  4. Allowance06/25/91
  5. Grant04/28/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 06/09/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Oxiteno S/A Industria e Comércio

SP, BR

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Inventors

F. P. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/09/1987

RPI 868

Publicação do pedido de patente

#3.1

03/10/1987

RPI 855

Pedido de patente depositado

#2.1

09/16/1986

RPI 830

Carta-patente expirada

#21.1

Patente extinta em 31/07/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/28/1992

RPI 1117

Republicação - classificação IPC

#15.11

11/05/1991

RPI 1092

Notificação para pagamento de retribuição

#13.1

10/22/1991

RPI 1090

Deferimento

#9.1

06/25/1991

RPI 1073

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