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Official data from INPI

JUNTA SELANTE SEPARÁVEL APERFEIÇOADA

Prazo de SigiloInvention Patent

Application data

Number

PI8901636

Type

Invention Patent

Filing

04/07/1989

Publication

10/30/1990

Progress at the INPI

  1. Filing04/07/89
  2. Publication10/30/90
  3. Examination04/09/91
  4. Allowance05/24/94
  5. Grant03/28/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

See this company's full portfolio

Inventors

E. P. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

05/23/1989

RPI 970

Carta-patente expirada

#21.1

Patente extinta em 07/04/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

09/27/1994

RPI 1243

Deferimento

#9.1

05/24/1994

RPI 1225

Solicitação de exame técnico

#4.1

04/09/1991

RPI 1062

Publicação do pedido de patente

#3.1

10/30/1990

RPI 1039

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