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Official data from INPI

PROCESSO APERFEIÇOADO PARA FABRICAR CONCRETO QUE TEM ALTA RESISTÊNCIA À COMPOSIÇÃO DE CIMENTO E ADITIVO PARA FAZER CONCRETO.

ConcedidaInvention Patent
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Application data

Number

PI7704493

Type

Invention Patent

Filing

07/08/1977

Publication

-
View on INPI

Progress at the INPI

  1. Filing07/08/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant06/28/88
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. N. (pessoa física)

Inventors

K. O. (pessoa física)

O. P. (pessoa física)

Technical data

IPC Classification

C04B 7/02C04B 7/12

Priority claims

NO

P: 76.2401 · 07/09/1976

NO

PI 7704493 · 07/08/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Exigência - art. 36 da LPI

#6.1

02/24/1987

RPI 853

Exigência - art. 36 da LPI

#6.1

04/13/1982

RPI 599

Exigência - art. 36 da LPI

#6.1

11/03/1981

RPI 576

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

Pedido de licença compulsória

#20.1

03/27/1990

RPI 1011

20.4

03/20/1990

RPI 1010

Pedido de licença compulsória

#20.1

03/13/1990

RPI 1009

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