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Official data from INPI

VÁLVULA DO TIPO DE PLACA ANELAR PARA UM COMPRESSOR DE ÊMBOLO

Em AnáliseInvention Patent

Application data

Number

PI8606035

Type

Invention Patent

Filing

12/08/1986

Publication

09/15/1987

Progress at the INPI

  1. Filing12/08/86
  2. Publication09/15/87
  3. Examination10/24/89
  4. Allowance08/21/90
  5. Grant04/27/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Maschinenfabrik Sulzer-Burckhardt AG.

CH

See this company's full portfolio

Inventors

E. O. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

05 247/85 · 12/09/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/24/1989

RPI 992

Publicação do pedido de patente

#3.1

09/15/1987

RPI 882

Pedido de patente depositado

#2.1

04/14/1987

RPI 860

Carta-patente expirada

#21.1

Patente extinta em 08/12/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/27/1993

RPI 1169

110

02/02/1993

RPI 1157

Recurso

#12.1

12/11/1990

RPI 1045

Deferimento

#9.1

08/21/1990

RPI 1029

Pedido de certificado de adição de invenção

#5.1

03/13/1990

RPI 1009

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