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Official data from INPI

VÁLVULA DE RETENÇÃO PARA SISTEMAS DE BOMBEIO MECÂNICO DE FUNDO DE POÇO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9600974

Type

Invention Patent

Filing

03/11/1996

Publication

12/30/1997

Progress at the INPI

  1. Filing03/11/96
  2. Publication12/30/97
  3. Examination
  4. Allowance08/29/00
  5. Grant11/14/00
  6. Expired04/26/16

The letters patent expired on 04/26/2016: 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: 04/26/2016. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

See this company's full portfolio

Inventors

G. C. (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 11/03/2016

04/26/2016

RPI 2364

Concessão da patente

#16.1

11/14/2000

RPI 1558

Deferimento

#9.1

08/29/2000

RPI 1547

Publicação do pedido de patente

#3.1

12/30/1997

RPI 1410

Pedido de patente depositado

#2.1

04/16/1996

RPI 1324

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