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Official data from INPI

PROCESSO PARA A REDUÇÃO EM ESTADO SÓLIDO DE MINÉRIOS DE CROMITA

PublicadaInvention Patent

Application data

Number

PI8704022

Type

Invention Patent

Filing

08/06/1987

Publication

04/05/1988

Progress at the INPI

  1. Filing08/06/87
  2. Publication04/05/88
  3. Examination10/16/90
  4. Allowance10/10/95
  5. Grant07/30/96
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. T. (pessoa física)

ZA

Samancor Limited

ZA

Inventors

N. D. (pessoa física)

ZA

R. E. (pessoa física)

ZA

Technical data

IPC Classification

Priority claims

ZA

86/5937 · 08/07/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/05/1988

RPI 911

Pedido de patente depositado

#2.1

10/06/1987

RPI 885

Carta-patente expirada

#21.1

Patente extinta em 06/08/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

07/30/1996

RPI 1339

Deferimento

#9.1

10/10/1995

RPI 1297

Exigência - art. 36 da LPI

#6.1

07/05/1994

RPI 1231

14.1

06/02/1992

RPI 1122

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

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