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Official data from INPI

COMPRESSOR DE ÊMBOLO MERGULHADOR

PublicadaInvention Patent

Application data

Number

PI8901661

Type

Invention Patent

Filing

04/07/1989

Publication

11/21/1989

Progress at the INPI

  1. Filing04/07/89
  2. Publication11/21/89
  3. Examination12/24/91
  4. Allowance08/24/93
  5. Grant04/26/94
  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: 11/21/1989. 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. M. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

01 312/88 · 04/08/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/21/1989

RPI 996

Pedido de patente depositado

#2.1

05/23/1989

RPI 970

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era F04B 21/04.

03/20/2018

RPI 2463

Carta-patente expirada

#21.1

Patente extinta em 07/04/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

04/26/1994

RPI 1221

Deferimento

#9.1

08/24/1993

RPI 1186

Solicitação de exame técnico

#4.1

12/24/1991

RPI 1099

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