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Official data from INPI

PROCESSO DE PRODUÇÃO DE SAIS FÉRRICO-FERROSOS

Em AnáliseInvention Patent
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Application data

Number

PI8504528

Type

Invention Patent

Filing

09/17/1985

Publication

07/15/1986
View on INPI

Progress at the INPI

  1. Filing09/17/85
  2. Publication07/15/86
  3. Examination10/04/88
  4. Allowance07/02/91
  5. Grant02/18/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 10/04/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I.B.E. Co., Ltd.

JP

Inventors

S. Y. (pessoa física)

JP

Technical data

IPC Classification

C01B 9/02C01G 49/02

Priority claims

JP

195287/84 · 09/18/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/04/1988

RPI 937

14.1

07/12/1988

RPI 925

Publicação do pedido de patente

#3.1

07/15/1986

RPI 821

Pedido de patente depositado

#2.1

12/03/1985

RPI 789

Carta-patente expirada

#21.1

Patente extinta em 17/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

02/18/1992

RPI 1107

Notificação para pagamento de retribuição

#13.1

10/29/1991

RPI 1091

Deferimento

#9.1

07/02/1991

RPI 1074

Exigência - art. 36 da LPI

#6.1

01/22/1991

RPI 1051

Exigência - art. 36 da LPI

#6.1

07/24/1990

RPI 1025

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