Official data from INPI

APERFEICOAMENTOS EM TUBOS DE CONTATO

Em AnáliseInvention Patent

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Application data

Number

PI7802437

Type

Invention Patent

Filing

04/19/1978

Publication

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Progress at the INPI

Filing04/19/78
Publication
Examination12/01/81
Allowance02/08/83
Grant
Expired07/06/93

The letters patent expired on 07/06/1993: 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: 04/02/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. S. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

Notificação para pagamento de retribuição

#13.1

06/07/1983

RPI 659

Deferimento

#9.1

02/08/1983

RPI 642

Exigência - art. 36 da LPI

#6.1

07/20/1982

RPI 613

Solicitação de exame técnico

#4.1

12/01/1981

RPI 580

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

Pedido de licença compulsória

#20.1

03/13/1990

RPI 1009

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