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Official data from INPI

PROCESSO DE HIDROGENAÇÃO CATALÍTICA NÃO-DESTRUTIVA DE AROMÁTICOS POLINUCLEARES

Em AnáliseInvention Patent

Application data

Number

PI8706413

Type

Invention Patent

Filing

11/27/1987

Publication

06/20/1989

Progress at the INPI

  1. Filing11/27/87
  2. Publication06/20/89
  3. Examination11/21/89
  4. Allowance01/18/94
  5. Grant08/30/94
  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.

Talk to a specialist

Latest action published by the INPI: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

M. V. (pessoa física)

BR

S. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/21/1989

RPI 996

Publicação do pedido de patente

#3.1

06/20/1989

RPI 974

Pedido de patente depositado

#2.1

12/27/1988

RPI 949

Carta-patente expirada

#21.1

Patente extinta em 27/11/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

08/30/1994

RPI 1239

Notificação para pagamento de retribuição

#13.1

05/10/1994

RPI 1223

Deferimento

#9.1

01/18/1994

RPI 1207

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