Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI8008075

Type

Invention Patent

Filing

12/10/1980

Publication

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Progress at the INPI

Filing12/10/80
Publication
Examination12/29/81
Allowance10/23/84
Grant04/30/85
Expired03/19/96

The letters patent expired on 03/19/1996: 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kloeckner CRA Patent Gmbh.

Inventors

B. K. (pessoa física)

M. P. (pessoa física)

Technical data

IPC Classification

C21C 5/28

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

12/20/1983

RPI 687

Solicitação de exame técnico

#4.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

Pedido de licença compulsória

#20.1

05/01/1990

RPI 1016

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