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Official data from INPI

PROCESSO DE DETERMINAÇÃO DO PARÂMETRO Rwb DO MODELO DE INTERPRETAÇÃO DE PERFIS DAS DUAS ÁGUAS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002074

Type

Invention Patent

Filing

05/03/1990

Publication

11/12/1991

Progress at the INPI

  1. Filing05/03/90
  2. Publication11/12/91
  3. Examination04/28/92
  4. Allowance12/29/98
  5. Grant04/27/99
  6. Expired01/15/13

The letters patent expired on 01/15/2013: 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: 01/15/2013. 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

G. N. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 03/05/2010

01/15/2013

RPI 2193

Concessão da patente

#16.1

04/27/1999

RPI 1477

Deferimento

#9.1

12/29/1998

RPI 1460

Exigência - art. 36 da LPI

#6.1

05/19/1998

RPI 1430

Solicitação de exame técnico

#4.1

04/28/1992

RPI 1117

Publicação do pedido de patente

#3.1

11/12/1991

RPI 1093

Pedido de patente depositado

#2.1

09/11/1990

RPI 1032

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