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Official data from INPI

VÁLVULA PARA A ADIÇÃO DE ÁGUA EM BATERIAS DE ACUMULADOR ELETROQUÍMICO

Em AnáliseInvention Patent

Application data

Number

PI8607172

Type

Invention Patent

Filing

08/11/1986

Publication

09/13/1988

Progress at the INPI

  1. Filing08/11/86
  2. Publication09/13/88
  3. Examination04/25/89
  4. Allowance06/04/91
  5. Grant02/18/92
  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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sab Nife AB, companhia sueca

SE

Inventors

P. F. (pessoa física)

SE

Technical data

IPC Classification

Priority claims

SE

8503797-6 · 08/14/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/25/1989

RPI 966

Notificação de entrada na fase nacional - PCT

#1.3

09/13/1988

RPI 934

Carta-patente expirada

#21.1

Patente extinta em 11/08/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

02/18/1992

RPI 1107

Deferimento

#9.1

06/04/1991

RPI 1070

Exigência - art. 36 da LPI

#6.1

05/15/1990

RPI 1018

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