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Official data from INPI

CORPOS FORMADOS DE SILICATO DE CÁLCIO E PROCESSO PARA PRODUZIR OS MESMOS

Em AnáliseInvention Patent
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Application data

Number

PI7700875

Type

Invention Patent

Filing

02/11/1977

Publication

-
View on INPI

Progress at the INPI

  1. Filing02/11/77
  2. Publication
  3. Examination
  4. Allowance03/15/88
  5. Grant10/25/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 12/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. S. (pessoa física)

JP

Inventors

A. T. (pessoa física)

JP

K. (pessoa física)

JP

K. O. (pessoa física)

JP

Technical data

IPC Classification

C04B 35/16

Priority claims

JP

132850 · 11/04/1976

JP

15267 · 02/13/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

22.5

12/12/1989

RPI 999

Concessão da patente

#16.1

10/25/1988

RPI 940

Deferimento

#9.1

03/15/1988

RPI 908

Exigência - art. 36 da LPI

#6.1

11/03/1987

RPI 889

11.8

08/11/1987

RPI 877

Retificação

#15.3

04/22/1987

RPI 861

Exigência - art. 36 da LPI

#6.1

10/14/1986

RPI 834

Exigência - art. 36 da LPI

#6.1

11/06/1984

RPI 733

Exigência - art. 36 da LPI

#6.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

Patente extinta em 11/02/92

08/19/2008

RPI 1963

201

06/05/1990

RPI 1021

Pedido de licença voluntária

#17.1

01/02/1990

RPI 1000

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