Official data from INPI

INDUTANCIA E PROCESSO PARA A CONSTRUCAO DE BOBINAS COMPOSTAS

ConcedidaInvention Patent

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Application data

Number

PI7904545

Type

Invention Patent

Filing

07/21/1978

Publication

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Progress at the INPI

Filing07/21/78
Publication
Examination06/08/82
Allowance07/05/83
Grant12/27/83
Expired04/18/95

The letters patent expired on 04/18/1995: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. R. (pessoa física)

Inventors

C. G. (pessoa física)

M. E. (pessoa física)

Technical data

IPC Classification

H01F 17/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

11/08/1983

RPI 681

Deferimento

#9.1

07/05/1983

RPI 663

Solicitação de exame técnico

#4.1

06/08/1982

RPI 607

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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