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Official data from INPI

SILENCIADOR DE COMPRESSOR ALTERNATIVO

Prazo de SigiloInvention Patent

Application data

Number

PI8900976

Type

Invention Patent

Filing

02/28/1989

Publication

10/09/1990

Progress at the INPI

  1. Filing02/28/89
  2. Publication10/09/90
  3. Examination10/22/91
  4. Allowance11/03/92
  5. Grant07/27/93
  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.

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Latest action published by the INPI: 04/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Paulista - COSIPA

SP, BR

See this company's full portfolio

Inventors

J. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Carta-patente expirada

#21.1

Patente extinta em 28/02/2004

12/15/2009

RPI 2032

20.7

10/18/1994

RPI 1246

Concessão da patente

#16.1

07/27/1993

RPI 1182

Notificação para pagamento de retribuição

#13.1

03/23/1993

RPI 1164

Deferimento

#9.1

11/03/1992

RPI 1144

Solicitação de exame técnico

#4.1

10/22/1991

RPI 1090

Publicação do pedido de patente

#3.1

10/09/1990

RPI 1036

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