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Official data from INPI

SUPORTE PARA DISCOS DE TAPAMENTO COM ROTAÇÃO E AVANÇO AXIAL

Prazo de SigiloInvention Patent

Application data

Number

PI8804421

Type

Invention Patent

Filing

08/30/1988

Publication

04/17/1990

Progress at the INPI

  1. Filing08/30/88
  2. Publication04/17/90
  3. Examination02/25/92
  4. Allowance01/02/96
  5. Grant09/24/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 01/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Mendes Júnior Siderurgia S.A

MG, BR

S. A. (pessoa física)

MG, BR

See this company's full portfolio

Inventors

A. O. (pessoa física)

BR

A. J. (pessoa física)

BR

J. S. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

01/24/1989

RPI 953

Carta-patente expirada

#21.1

Patente extinta em 30/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

09/24/1996

RPI 1347

Deferimento

#9.1

01/02/1996

RPI 1309

14.4

11/08/1994

RPI 1249

Retificação

#15.6

10/11/1994

RPI 1245

Alteração de numeração

#15.1

06/07/1994

RPI 1227

15.5

06/07/1994

RPI 1227

Solicitação de exame técnico

#4.1

02/25/1992

RPI 1108

Publicação do pedido de patente

#3.1

04/17/1990

RPI 1014

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