Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI8100970

Type

Invention Patent

Filing

02/18/1981

Publication

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Progress at the INPI

Filing02/18/81
Publication
Examination04/27/82
Allowance07/14/87
Grant12/29/87
Expired03/26/96

The letters patent expired on 03/26/1996: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OXY Metal Industries Corporation.

Inventors

C. D. (pessoa física)

Technical data

IPC Classification

C25D 3/38

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

12/18/1984

RPI 739

Exigência - art. 36 da LPI

#6.1

03/07/1984

RPI 698

Solicitação de exame técnico

#4.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

03/26/1996

RPI 1321

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