Official data from INPI

LIGAS DURAS

ConcedidaInvention Patent

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Application data

Number

PI7605089

Type

Invention Patent

Filing

08/03/1976

Publication

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Progress at the INPI

Filing08/03/76
Publication
Examination
Allowance
Grant05/29/84
Expired07/20/93

The letters patent expired on 07/20/1993: 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ACOS VILLARES SA

Inventors

B. C. (pessoa física)

D. M. (pessoa física)

F. I. (pessoa física)

M. F. (pessoa física)

V. W. (pessoa física)

Technical data

IPC Classification

C22C 38/26 C22C 38/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

12/13/1983

RPI 686

110

09/27/1983

RPI 675

14.7

11/23/1982

RPI 631

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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