Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI8200909

Type

Invention Patent

Filing

02/19/1982

Publication

View on INPI

Progress at the INPI

Filing02/19/82
Publication
Examination08/30/83
Allowance01/26/88
Grant06/28/88
Expired07/01/08

The letters patent expired on 07/01/2008: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HYLSA SA [MX]

Inventors

J. S. (pessoa física)

Technical data

IPC Classification

C21B 13/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

100

01/26/1988

RPI 901

120

08/04/1987

RPI 876

Petição de recurso

#12.2

12/30/1986

RPI 845

Indeferimento

#9.2

09/30/1986

RPI 832

Conhecimento de parecer técnico

#7.1

07/02/1985

RPI 767

Exigência - art. 36 da LPI

#6.1

11/27/1984

RPI 736

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Pedido de patente depositado

#2.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

Patente extinta em 19/02/97

07/01/2008

RPI 1956

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