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Official data from INPI

COMPÓSITO DE AGLOMERANTE E PALHA METÁLICA, COM OU SEM AGREGADO/CARGA, E COM OU SEM ADITIVOS

PublicadaInvention Patent
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Application data

Number

PI8708012

Type

Invention Patent

Filing

07/17/1987

Publication

02/21/1989
View on INPI

Progress at the INPI

  1. Filing07/17/87
  2. Publication02/21/89
  3. Examination04/02/91
  4. Allowance02/14/95
  5. Grant10/31/95
  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.

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Latest action published by the INPI: 02/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Instituto de Pesquisas Tecnológicas de São Paulo S/A - IPT

SP, BR

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Inventors

C. T. (pessoa física)

BR

Technical data

IPC Classification

C04B 31/18

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/21/1989

RPI 957

Pedido de patente depositado

#2.1

02/09/1988

RPI 903

Carta-patente expirada

#21.1

Patente extinta em 17/07/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/31/1995

RPI 1300

Notificação para pagamento de retribuição

#13.1

07/04/1995

RPI 1283

Deferimento

#9.1

02/14/1995

RPI 1263

15.10

12/06/1994

RPI 1253

15.10

11/29/1994

RPI 1252

Conhecimento de parecer técnico

#7.1

06/07/1994

RPI 1227

Solicitação de exame técnico

#4.1

04/02/1991

RPI 1061

Solicitação de exame não realizada

#4.2

12/26/1990

RPI 1047

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