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Official data from INPI

JOGO DE VÁLVULAS PARA COMPRESSOR DE ÊMBOLO

PublicadaInvention Patent

Application data

Number

PI8900204

Type

Invention Patent

Filing

01/18/1989

Publication

09/12/1989

Progress at the INPI

  1. Filing01/18/89
  2. Publication09/12/89
  3. Examination05/21/91
  4. Allowance01/05/93
  5. Grant06/29/93
  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.

Talk to a specialist

Latest action published by the INPI: 09/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Greenfield AG

CH

Maschinenfabrik sulzer-Burckhardt AG

CH

Inventors

H. M. (pessoa física)

CH

M. P. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

00174/88 · 01/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/12/1989

RPI 986

Pedido de patente depositado

#2.1

02/28/1989

RPI 958

Carta-patente expirada

#21.1

Patente extinta em 18/01/2004

12/15/2009

RPI 2032

Transferência deferida

#25.1

Transferido de: Maschinenfabrik Sulzer-Burckhardt Ag

03/26/2002

RPI 1629

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

04/27/1993

RPI 1169

Deferimento

#9.1

01/05/1993

RPI 1153

Solicitação de exame técnico

#4.1

05/21/1991

RPI 1068

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