Official data from INPI

PROCESSO DE FABRICACAO DE CIMENTO PORTLAND

Em AnáliseInvention Patent

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Application data

Number

PI7700342

Type

Invention Patent

Filing

01/19/1976

Publication

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Progress at the INPI

Filing01/19/76
Publication
Examination
Allowance03/16/82
Grant10/26/82
Expired07/27/93

The letters patent expired on 07/27/1993: 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

Inventors

P. A. (pessoa física)

Technical data

IPC Classification

C04B 7/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/24/1987

RPI 892

Concessão da patente

#16.1

10/26/1982

RPI 627

Notificação para pagamento de retribuição

#13.1

07/06/1982

RPI 611

Deferimento

#9.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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