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Official data from INPI

MÉTODO E APARELHO PARA FABRICAÇÃO DE ANEL DE PISTÃO E O RESPECTIVO ANEL RESULTANTE.

ConcedidaInvention Patent

Application data

Number

PI8103691

Type

Invention Patent

Filing

06/11/1981

Publication

01/18/1983

Progress at the INPI

  1. Filing06/11/81
  2. Publication01/18/83
  3. Examination09/20/83
  4. Allowance10/30/84
  5. Grant05/28/85
  6. Terminated08/07/90

The patent was granted on 05/28/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Associated Engineering Italy S.P.A.

Inventors

R. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/30/1984

RPI 732

Exigência - art. 36 da LPI

#6.1

04/10/1984

RPI 703

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

Publicação do pedido de patente

#3.1

01/18/1983

RPI 639

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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